CN110097147B - Method and system for setting primitive drawing attribute, computer equipment and storage medium - Google Patents

Abstract

The invention provides a method and a system for setting primitive drawing attributes, computer equipment and a computer readable storage medium, wherein the method for setting the primitive drawing attributes comprises the following steps: scanning the page, and judging whether the page has overprint attributes or not; when the page has the overprint attribute, acquiring a primitive to be drawn and judging whether the primitive to be drawn is overlapped with the background of the page; when the primitive to be drawn is overlapped with the background of the page, judging whether the page needs to be subjected to delayed color correction or not according to the attribute of the primitive; when the page needs to be delayed and corrected, setting a primitive drawing area on the page as a transparent area; and performing overprinting calculation on the primitive to be drawn in the transparent area to obtain a primitive lattice, performing color correction on the primitive lattice, and finally outputting the primitive lattice, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

Description

Method, system, computer equipment and storage medium for setting drawing attributes of primitives

technical field

The present invention relates to the technical field of image rasterization, and in particular, to a method, a system, a computer device and a computer-readable storage medium for setting a drawing attribute of a primitive.

Background technique

A Raster Image Processor (RIP for short) is an interpreter that interprets and converts layout information described in a page description language into data information that can be output by an output device. RIP is the core software of the whole prepress industry. The output quality, output speed and openness of a desktop system depend to a large extent on the performance of RIP.

When the page description language describes the layout content, two imaging models are generally adopted: an alternative imaging model and a transparent imaging model. The alternative imaging mode is the imaging model used by PS (Adobe Photoshop, image processing software) and PDF (Portable Document Format, Portable Document Format) version 1.3. The basic principle is: each new image drawn to a certain position on the page The element completely replaces the background content at that location, and the final color of a point on the page at that location is determined by the element newly drawn at that location. The basic principle of the transparent imaging model is: the transparent graphics element newly drawn to a certain position on the page needs to be mixed with the background content at the previous position, and the final color of a point at this position on the page is drawn to this position. All primitives on it and the transparency property of the background are determined together.

A non-zero overprint in the entity overprint properties is only valid for process colors. If a certain color version in the cmyk color version of the current image element is empty, the background content of the color version of the color version will be displayed, and the cmyk color version is a color registration mode used in color printing. In the case of overprinting attributes, two modes are generally used for color space management of layout content: under the replacement imaging model, the color correction of the primitive is performed first, and then the primitive is completely replaced with the background content at the position. ;Transparent imaging model, the final color of a point on the page is determined by all the primitives drawn to this position and the transparency property of the background.

During the printing process, the user needs to perform color management on the page. If the graphic element itself has an overprint effect and the graphic element satisfies non-zero overprinting, the number of color channels of the graphic element will change after color management, for example, some layouts are blank. Page, the page will have content after color management, so that when it overlaps with other primitives, there will be no overprinting effect.

SUMMARY OF THE INVENTION

The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

To this end, one aspect of the present invention is to provide a method for setting drawing attributes of a primitive.

Another aspect of the present invention is to provide a system for setting drawing attributes of primitives.

Yet another aspect of the present invention is to provide a computer device.

Yet another aspect of the present invention is to provide a computer-readable storage medium.

In view of this, according to one aspect of the present invention, a method for setting drawing attributes of graphics elements is proposed, including: scanning a page to determine whether the page has an overprint attribute; Whether the drawing element overlaps with the background of the page; when the element to be drawn overlaps with the background of the page, judge whether the page needs to be delayed color correction according to the attributes of the element; when the page needs to be delayed color correction, set the The primitive drawing area on the page is set as a transparent area; the primitive lattice is obtained by overprinting the primitives to be drawn in the transparent area, and the color proofing of the primitive lattice is performed, and finally the primitive lattice is output.

The method for setting graphics element drawing attributes provided by the present invention firstly determines whether the page has the overprinting attribute, ends the subsequent process when it does not have the overprinting attribute, saves system resources, and judges whether the graphics element to be drawn overlaps with the page background when it has the overprinting attribute, If it overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the graphics element drawing area of the page into a non-transparent area and a transparent area. When the page is interpreted, the color management timing of the primitives is used. When de-transparency is forced to be transparent, the primitives in the transparent area are first calculated by overprinting, and the dot matrix obtained during assembly is the final rendering color of the primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

According to the method for setting the above-mentioned primitive drawing attributes of the present invention, it can also have the following technical features:

In the above technical solution, preferably, when the page has an overprint attribute, the method further includes: establishing a resource statistics area table; and performing a reduction process on the resource statistics area table.

In this technical solution, after judging that the page has the overprint attribute, a resource statistics area table is established to provide a basis for judging whether the graphic element to be drawn overlaps with the page background. The size of the area table is proportional to the output resolution. When the output resolution is large, the area table must be very large. Therefore, if the resource statistics are performed when the output resolution is high or the number of sub-pages is very large, it will take up Larger memory, so the resource statistics area table is doubled.

In any of the above technical solutions, preferably, the step of establishing the resource statistics area table specifically includes: dividing the page into blocks according to the first preset height and the first preset width to obtain a first number of page drawing areas; The second preset height and the second preset width divide the page into blocks to obtain a second number of page blocks; record the page drawing area and the page blocks to obtain a resource statistics area table; wherein the first number is less than the second number.

In this technical solution, the page is first divided into blocks according to the first preset height and width, for example, the page is divided into multiple page drawing areas according to the width×height of 32×16; The page is divided into blocks again, for example, the page is divided into multiple page blocks according to the width × height of 8 × 8, and the divided page drawing areas and page blocks are recorded in a table to form a resource statistics area table. In this way, 1 bit in the drawing table represents a page drawing area of 32×16, 0 means that the area is not covered by the primitive, and 1 means that the area is covered by the primitive.

In any of the above technical solutions, preferably, the steps of acquiring the graphic element to be drawn and judging whether the graphic element to be drawn and the background of the page overlap, specifically include: acquiring the graphic element to be drawn, and determining the drawing range of the graphic element to be drawn, And determine the page drawing area corresponding to the drawing range in the resource statistical area table; count the number of page blocks covered by the drawing range in the resource statistical area table; if the number of page blocks covered by the drawing range is greater than the preset number, determine the to-be-drawn The graphic element overlaps with the background of the page; if the number of page blocks covered by the drawing range is less than or equal to the preset number, it is determined that the graphic element to be drawn does not overlap with the background of the page.

In this technical solution, it is searched in the resource statistics area table whether the graphic element to be drawn will cover an excess preset number of page blocks in one or some page drawing areas, and if so, the background of the graphic element to be drawn and the page is determined. Overlap occurs, and it is possible to accurately judge whether overlap occurs. It is also possible to set the number of times for judging whether coverage occurs, that is, more than one judgment can be performed to ensure the accuracy of the judgment result.

In any of the above-mentioned technical solutions, preferably, the step of performing down-multiplication processing on the resource statistics area table specifically includes: setting the height of the resource statistics area table according to the first formula according to the preset multiplication ratio, and setting the resource according to the second formula. The width of the statistical area table; the first formula is Y=(H+H'×D)/H'×D, where Y represents the height of the resource statistical area table, H represents the height of the page, and H' represents the first preset height, D represents the preset magnification; the second formula is X=(W+W'×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, and W' represents the first preset width, and W" represents the second preset width.

In this technical solution, the magnification is an empirical value, which can be obtained by the formula D=(MaxResolution+600.0)/600.0, where MaxResolution is the maximum resolution of the page. The height and width of the resource statistics area table are calculated according to the above formula, that is, the resource statistics area table is down-multiplied to reduce the consumption of memory resources.

According to another aspect of the present invention, a system for setting graphics element drawing attributes is proposed, including: a scanning unit, used for scanning a page, and judging whether the page has an overprint attribute; a graphics element acquisition unit, used when the page has an overprint attribute , obtains the graphic element to be drawn and judges whether the graphic element to be drawn overlaps with the background of the page; the judgment unit is used to judge whether the page needs to be delayed according to the attribute of the graphic element when the graphic element to be drawn overlaps with the background of the page Color correction; setting unit, used to set the graphics element drawing area on the page as a transparent area when the page needs to be delayed color correction; processing unit, used to overprint the graphics elements to be drawn in the transparent area to obtain a graph Element lattice, and color proofing the primitive lattice, and finally output the primitive lattice.

The system for setting graphics element drawing attributes provided by the present invention firstly determines whether the page has the overprinting attribute, ends the subsequent process when it does not have the overprinting attribute, saves system resources, and judges whether the graphics element to be drawn overlaps with the page background when it has the overprinting attribute, If it overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the graphics element drawing area of the page into a non-transparent area and a transparent area. When the page is interpreted, the color management timing of the primitives is used. When de-transparency is forced to be transparent, the primitives in the transparent area are first calculated by overprinting, and the dot matrix obtained during assembly is the final rendering color of the primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

According to the setting system of the above-mentioned primitive drawing attributes of the present invention, it can also have the following technical features:

In the above technical solution, preferably, it further includes: an establishment unit, configured to establish a resource statistics area table when the page has an overprint attribute; and perform down-multiplication processing on the resource statistics area table.

In this technical solution, after judging that the page has the overprint attribute, a resource statistics area table is established to provide a basis for judging whether the graphic element to be drawn overlaps with the page background. The size of the area table is proportional to the output resolution. When the output resolution is large, the area table must be very large. Therefore, if the resource statistics are performed when the output resolution is high or the number of sub-pages is very large, it will take up Larger memory, so the resource statistics area table is doubled.

In any of the above technical solutions, preferably, the establishment unit includes: a block unit for dividing a page into blocks according to a first preset height and a first preset width to obtain a first number of page drawing areas; and The second preset height and the second preset width divide the page into blocks to obtain a second number of page blocks; the establishment unit is specifically used to record the page drawing area and the page blocks to obtain the resource statistics area table; wherein, the first The quantity is less than the second quantity.

In this technical solution, the page is first divided into blocks according to the first preset height and width, for example, the page is divided into multiple page drawing areas according to the width×height of 32×16; The page is divided into blocks again, for example, the page is divided into multiple page blocks according to the width × height of 8 × 8, and the divided page drawing areas and page blocks are recorded in a table to form a resource statistics area table. In this way, 1 bit in the drawing table represents a page drawing area of 32×16, 0 means that the area is not covered by the primitive, and 1 means that the area is covered by the primitive.

In any of the above-mentioned technical solutions, preferably, the graphic element acquisition unit is specifically configured to acquire the graphic element to be drawn, determine the drawing range of the graphic element to be drawn, and determine the page drawing area corresponding to the drawing range in the resource statistics area table; The graphic element acquisition unit includes: a statistical unit for counting the number of page blocks covered by the drawing range in the resource statistics area table; and a determining unit for determining if the number of page blocks covered by the drawing range is greater than the preset number, to determine The drawing graphic element overlaps with the background of the page; and if the number of page blocks covered by the drawing range is less than or equal to the preset number, it is determined that the graphic element to be drawn and the background of the page do not overlap.

In this technical solution, it is searched in the resource statistics area table whether the graphic element to be drawn will cover an excess preset number of page blocks in one or some page drawing areas, and if so, the background of the graphic element to be drawn and the page is determined. Overlap occurs, and it is possible to accurately judge whether overlap occurs. It is also possible to set the number of times for judging whether coverage occurs, that is, more than one judgment can be performed to ensure the accuracy of the judgment result.

In any of the above technical solutions, preferably, the establishment unit is specifically configured to set the height of the resource statistics area table according to the first formula according to the preset magnification, and set the width of the resource statistics area table according to the second formula; the first formula is Y=(H+H'×D)/H'×D, where Y represents the height of the resource statistics area table, H represents the height of the page, H' represents the first preset height, and D represents the preset magnification; The second formula is X=(W+W'×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, W' represents the first preset width, and W" Indicates the second preset width.

In this technical solution, the magnification is an empirical value, which can be obtained by the formula D=(MaxResolution+600.0)/600.0, where MaxResolution is the maximum resolution of the page. The height and width of the resource statistics area table are calculated according to the above formula, that is, the resource statistics area table is down-multiplied to reduce the consumption of memory resources.

According to yet another aspect of the present invention, a computer device is proposed, which includes a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements any of the above diagrams when executing the computer program Steps in the set method of the meta draw property.

In the computer device provided by the present invention, when the processor executes the computer program, the processor determines whether the page has the overprint attribute, ends the subsequent process when the overprint attribute does not exist, saves system resources, and judges whether the graphic element to be drawn overlaps with the page background when the overprint attribute has the overprint attribute. , if it overlaps, it means that the color correction processing may be delayed. After determining that the color correction processing needs to be delayed, the drawing area of the primitives on the page is divided into non-transparent areas and transparent areas. Avoid the opportunity of color management of primitives during page interpretation. When de-transparent, primitives in transparent areas are forced to perform overprinting calculation first. The lattice obtained during assembly is the final rendering color of primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

According to yet another aspect of the present invention, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of the method for setting drawing attributes of a primitive as described above.

In the computer-readable storage medium provided by the present invention, when the computer program is executed by the processor, it can determine whether the page has the overprint attribute, end the subsequent process when it does not have the overprint attribute, save system resources, and judge whether the graphic element to be drawn has the overprint attribute when it has the overprint attribute. It overlaps with the page background. If it overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the drawing area of the primitives on the page into a non-transparent area and a transparent area. It is a transparent area, avoiding the opportunity of color management of primitives during page interpretation. When de-transparent, the primitives in the transparent area are forced to be overprinted first. The lattice obtained during assembly is the final rendering color of the primitives, and then color management is performed. . The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

Additional aspects and advantages of the present invention will become apparent in the description section that follows, or will be learned by practice of the present invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

FIG. 1 shows a schematic flowchart of a method for setting a drawing attribute of a primitive according to an embodiment of the present invention;

2 shows a schematic flowchart of a method for setting a drawing attribute of a primitive according to another embodiment of the present invention;

FIG. 3 shows a schematic flowchart of a method for setting a drawing attribute of a graphic element according to still another embodiment of the present invention;

FIG. 4 shows a schematic block diagram of a system for setting drawing attributes of primitives according to an embodiment of the present invention;

FIG. 5 shows a schematic block diagram of a system for setting graphics element drawing properties according to another embodiment of the present invention;

FIG. 6 shows a schematic block diagram of a computer device according to an embodiment of the present invention.

Detailed ways

In order to understand the above objects, features and advantages of the present invention more clearly, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features in the embodiments may be combined with each other in the case of no conflict.

Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific details disclosed below. Example limitations.

An embodiment of the first aspect of the present invention proposes a method for setting a drawing property of a graphic element. FIG. 1 shows a schematic flowchart of a method for setting a drawing property of a graphic element according to an embodiment of the present invention. Among them, the method includes:

Step 102, scan the page to determine whether the page has an overprint attribute;

Step 104, when the page has an overprint attribute, obtain the graphic element to be drawn and determine whether the graphic element to be drawn overlaps with the background of the page;

Step 106, when the graphic element to be drawn overlaps with the background of the page, determine whether it is necessary to perform delayed color correction on the page according to the attribute of the graphic element;

Step 108, when it is necessary to perform delayed color correction on the page, set the graphics element drawing area on the page as a transparent area;

Step 110: Perform overprint calculation on the primitives to be drawn in the transparent area to obtain a primitive lattice, perform color correction on the primitive lattice, and finally output the primitive lattice.

The method for setting graphics element drawing attributes provided by the present invention firstly determines whether the page has the overprinting attribute, ends the subsequent process when it does not have the overprinting attribute, saves system resources, and judges whether the graphics element to be drawn overlaps with the page background when it has the overprinting attribute, If it overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the graphics element drawing area of the page into a non-transparent area and a transparent area. When the page is interpreted, the color management timing of the primitives is used. When de-transparency is forced to be transparent, the primitives in the transparent area are first calculated by overprinting, and the dot matrix obtained during assembly is the final rendering color of the primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

FIG. 2 shows a schematic flowchart of a method for setting a drawing attribute of a primitive according to another embodiment of the present invention. Among them, the method includes:

Step 202 , scan the page to determine whether the page has the overprint attribute.

Step 204 , when the page has the overprinting attribute, establish a resource statistics area table; perform a reduction process on the resource statistics area table.

In step 204 of this embodiment, when judging that the page has the overprint attribute, a resource statistics area table is established to provide a basis for judging whether the graphic element to be drawn overlaps with the page background. The size of the area table is proportional to the output resolution. When the output resolution is large, the area table must be very large. Therefore, if the resource statistics are performed when the output resolution is high or the number of sub-pages is very large, it will take up Larger memory, so the resource statistics area table is doubled.

Step 206: Acquire the graphic element to be drawn and determine whether the graphic element to be drawn overlaps with the background of the page.

Step 208 , when the graphic element to be drawn overlaps with the background of the page, it is judged whether the delayed color correction needs to be performed on the page according to the attribute of the graphic element.

Among them, judging whether delayed color correction needs to be performed on the page according to the attributes of the graphic elements is to judge whether delayed color correction needs to be performed according to the type, color space, and overprinting properties of the graphic elements, that is, whether it needs to be forced to be a transparent area. The judgment is made according to the rules described in the PDF manual.

Step 210 , when the delayed color correction needs to be performed on the page, set the graphics element drawing area on the page as a transparent area.

Step 212 , performing overprinting calculation on the primitives to be drawn in the transparent area to obtain a primitive lattice, performing color correction on the primitive lattice, and finally outputting the primitive lattice.

FIG. 3 shows a schematic flowchart of a method for setting a drawing attribute of a primitive according to still another embodiment of the present invention. Among them, the method includes:

Step 302, scan the page to determine whether the page has the overprint attribute.

Step 304, when the page has the overprint attribute, divide the page into blocks according to the first preset height and the first preset width to obtain a first number of page drawing areas; divide the page according to the second preset height and the second preset width. Divide into blocks to obtain a second number of page blocks; record the page drawing area and the page blocks to obtain a resource statistics area table; wherein, the first number is less than the second number.

In step 304 of this embodiment, when judging that the page has the overprint attribute, a resource statistics area table is established to provide a basis for judging whether the graphic element to be drawn overlaps with the page background. Specifically, first divide the page into blocks according to the first preset height and width, for example, divide the page into multiple page drawing areas according to the width×height of 32×16; then divide the page according to the second preset height and width. Blocking, for example, dividing a page into multiple page blocks according to the width×height of 8×8, and recording the divided page drawing areas and page blocks in a table to form a resource statistics area table. In this way, 1 bit in the drawing table represents a page drawing area of 32×16, 0 means that the area is not covered by the primitive, and 1 means that the area is covered by the primitive.

Step 306 , according to the preset magnification, the height of the resource statistics area table is set according to the first formula, and the width of the resource statistics area table is set according to the second formula.

The first formula is Y=(H+H'×D)/H'×D, where Y represents the height of the resource statistics area table, H represents the height of the page, H' represents the first preset height, and D represents the height of the page. Preset magnification; the second formula is X=(W+W'×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, and W' represents the first preset magnification. Set the width, W" represents the second preset width.

In step 306 of this embodiment, the size of the area table is proportional to the output resolution. When the output resolution is high, the area table must be very large. Therefore, if the output resolution is high or the number of subpages is high If the resource statistics are performed for a long time, it will occupy a large amount of memory, so the resource statistics area table is doubled. The magnification is an empirical value, which can be obtained by the formula D=(MaxResolution+600.0)/600.0, where MaxResolution is the maximum resolution of the page. The height and width of the resource statistics area table are calculated according to the above formula, that is, the resource statistics area table is down-multiplied to reduce the consumption of memory resources.

Step 308: Acquire the graphic element to be drawn, determine the drawing range of the graphic element to be drawn, and determine the page drawing area corresponding to the drawing range in the resource statistics area table.

Step 310: Count the number of page blocks covered by the drawing range in the resource statistics area table; if the number of page blocks covered by the drawing range is greater than a preset number, it is determined that the graphic element to be drawn overlaps with the background of the page; if the drawing range covers If the number of page blocks is less than or equal to the preset number, it is determined that the graphic element to be drawn does not overlap with the background of the page.

In step 308 and step 310 of this embodiment, it is determined whether the graphic element to be drawn will cover an excess preset number of page blocks in a certain or some page drawing areas by looking up in the resource statistics area table, and if so, it is determined to be drawn. The graphic element and the background of the page will overlap, so as to accurately judge whether the overlap occurs. It is also possible to set the number of times for judging whether coverage occurs, that is, more than one judgment can be performed to ensure the accuracy of the judgment result.

Step 312 , when the graphic element to be drawn overlaps with the background of the page, it is judged whether it is necessary to perform delayed color correction on the page according to the attribute of the graphic element.

Among them, judging whether delayed color correction needs to be performed on the page according to the attributes of the graphic elements is to judge whether delayed color correction needs to be performed according to the type, color space, and overprinting properties of the graphic elements, that is, whether it needs to be forced to be a transparent area. The judgment is made according to the rules described in the PDF manual.

Step 314, when it is necessary to perform delayed color correction on the page, set the primitive drawing area on the page as a transparent area; perform overprinting calculation on the primitives to be drawn in the transparent area to obtain the primitive lattice, and perform the primitive lattice on the page. Perform color proofing, and finally output the primitive lattice.

The embodiment of the second aspect of the present invention proposes a system for setting the drawing properties of a graphic element. FIG. 4 shows a schematic block diagram of a system 400 for setting the drawing properties of a graphic element according to an embodiment of the present invention. Wherein, the system 400 includes:

The scanning unit 402 is used to scan the page and determine whether the page has an overprint property; the graphic element acquisition unit 404 is used to obtain the graphic element to be drawn when the page has the overprint property and determine whether the graphic element to be drawn overlaps with the background of the page; The judging unit 406 is used for judging whether the page needs to be delayed color correction according to the attributes of the graphic element when the graphic element to be drawn overlaps with the background of the page; the setting unit 408 is used for delaying color correction on the page when the Set the primitive drawing area on the page as a transparent area; the processing unit 410 is used to perform overprinting calculation on the primitives to be drawn in the transparent area to obtain a primitive lattice, and perform color proofing on the primitive lattice, and finally output the image. Element lattice.

The system 400 for setting graphics element drawing attributes provided by the present invention firstly determines whether the page has the overprinting attribute, ends the subsequent process when it does not have the overprinting attribute, saves system resources, and determines whether the to-be-drawn graphics element overlaps with the page background when it has the overprinting attribute , if it overlaps, it means that the color correction processing may be delayed. After determining that the color correction processing needs to be delayed, the drawing area of the primitives on the page is divided into non-transparent areas and transparent areas. Avoid the opportunity of color management of primitives during page interpretation. When de-transparent, primitives in transparent areas are forced to perform overprinting calculation first. The lattice obtained during assembly is the final rendering color of primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

FIG. 5 shows a schematic block diagram of a system 500 for setting drawing properties of primitives according to another embodiment of the present invention. Wherein, the system 500 includes:

a scanning unit 502, configured to scan a page and determine whether the page has an overprint attribute;

The establishment unit 504 is used to establish a resource statistics area table when the page has an overprint attribute; and perform a reduction process on the resource statistics area table;

The establishment unit 504 specifically includes: a block unit 542 for dividing the page into blocks according to the first preset height and the first preset width to obtain a first number of page drawing areas; and according to the second preset height and the second The preset width divides the page into blocks to obtain a second number of page blocks; the establishment unit 504 is specifically configured to record the page drawing area and the page blocks to obtain a resource statistics area table; wherein, the first number is less than the second number;

The establishing unit 504 is further configured to set the height of the resource statistics area table according to the first formula according to the preset magnification, and set the width of the resource statistics area table according to the second formula; the first formula is Y=(H+H'×D )/H'×D, where Y represents the height of the resource statistics area table, H represents the height of the page, H' represents the first preset height, and D represents the preset magnification; the second formula is X=(W+W' ×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, W' represents the first preset width, and W" represents the second preset width;

The graphic element acquiring unit 506 is used to acquire the graphic element to be drawn and determine whether the graphic element to be drawn overlaps with the background of the page; specifically, it is used to acquire the graphic element to be drawn, determine the drawing range of the graphic element to be drawn, and determine that the drawing range is within The corresponding page drawing area in the resource statistics area table;

The graphic element acquiring unit 506 includes: a counting unit 562, configured to count the number of page blocks covered by the drawing range in the resource statistics area table; and a determining unit 564, used for if the number of page blocks covered by the drawing range is greater than the preset Then it is determined that the graphic element to be drawn overlaps with the background of the page; and if the number of page blocks covered by the drawing range is less than or equal to the preset number, it is determined that the graphic element to be drawn and the background of the page do not overlap;

The judgment unit 508 is used to judge whether the page needs to be delayed color correction according to the attributes of the graphic element when the graphic element to be drawn overlaps with the background of the page;

The setting unit 510 is used to set the graphics element drawing area on the page as a transparent area when the delayed color correction needs to be performed on the page;

The processing unit 512 is configured to perform overprint calculation on the primitives to be drawn in the transparent area to obtain a primitive lattice, perform color correction on the primitive lattice, and finally output the primitive lattice.

In this embodiment, after judging that the page has the overprint attribute, a resource statistics area table is established to provide a basis for judging whether the graphic element to be drawn overlaps with the page background. Specifically, first divide the page into blocks according to the first preset height and width, for example, divide the page into multiple page drawing areas according to the width×height of 32×16; then divide the page according to the second preset height and width. Blocking, for example, dividing a page into multiple page blocks according to the width×height of 8×8, and recording the divided page drawing areas and page blocks in a table to form a resource statistics area table. In this way, 1 bit in the drawing table represents a page drawing area of 32×16, 0 means that the area is not covered by the primitive, and 1 means that the area is covered by the primitive.

The size of the area table is proportional to the output resolution. When the output resolution is large, the area table must be very large. Therefore, if the resource statistics are performed when the output resolution is high or the number of sub-pages is very large, it will take up Larger memory, so the resource statistics area table is doubled. The magnification is an empirical value, which can be obtained by the formula D=(MaxResolution+600.0)/600.0, where MaxResolution is the maximum resolution of the page. The height and width of the resource statistics area table are calculated according to the above formula, that is, the resource statistics area table is down-multiplied to reduce the consumption of memory resources.

By finding out in the resource statistics area table whether the graphic element to be drawn will cover a certain or some page drawing area with an excess of preset number of page blocks, if so, it is determined that the graphic element to be drawn and the background of the page will overlap, so as to achieve accurate to determine whether there is overlap. It is also possible to set the number of times for judging whether coverage occurs, that is, more than one judgment can be performed to ensure the accuracy of the judgment result.

An embodiment of the third aspect of the present invention provides a computer device, and FIG. 6 shows a schematic block diagram of a computer device 600 according to an embodiment of the present invention. Wherein, the computer equipment 600 includes:

A memory 602, a processor 604, and a computer program stored in the memory 602 and running on the processor 604, when the processor 604 executes the computer program, implements the steps of the method for setting the drawing attributes of a primitive as described above.

In the computer device 600 provided by the present invention, when the processor 604 executes the computer program, it can determine whether the page has the overprinting attribute, end the subsequent process when it does not have the overprinting attribute, save system resources, and judge whether the to-be-drawn graphics element matches the page when the overprinting attribute has the overprinting attribute. If the background overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the graphics element drawing area of the page into a non-transparent area and a transparent area, that is, the graphic element drawing area that meets the overprint effect is forced to be transparent. To avoid the color management timing of primitives during page interpretation, when de-transparent, the primitives in the transparent area are forced to be overprinted first, and the dot matrix obtained during assembly is the final rendering color of the primitives, and then color management is performed. The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

An embodiment of the fourth aspect of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, implements the steps of any of the above-mentioned methods for setting drawing attributes of a primitive.

In the computer-readable storage medium provided by the present invention, when the computer program is executed by the processor, it can determine whether the page has the overprint attribute, end the subsequent process when it does not have the overprint attribute, save system resources, and judge whether the graphic element to be drawn has the overprint attribute when it has the overprint attribute. It overlaps with the page background. If it overlaps, it means that the color correction processing may need to be delayed. After determining that the color correction processing needs to be delayed, divide the drawing area of the primitives on the page into a non-transparent area and a transparent area. It is a transparent area, avoiding the opportunity of color management of primitives during page interpretation. When de-transparent, the primitives in the transparent area are forced to be overprinted first. The lattice obtained during assembly is the final rendering color of the primitives, and then color management is performed. . The final output effect of the primitive is obtained first, and then the dot-matrix-level color correction is performed, so that the number of color channels of the primitive is prevented from being changed before overprinting, and the influence on the final overprinting effect is reduced.

In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiment", etc. means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in the present invention at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (12)

1. a kind of setting method of primitive drawing attribute, is characterized in that, described method comprises: Scanning a page to determine whether the page has an overprint attribute; When the page has the overprint attribute, acquiring the graphic element to be drawn and judging whether the graphic element to be drawn overlaps with the background of the page; When the to-be-drawn graphic element overlaps with the background of the page, determine whether it is necessary to perform delayed color correction on the page according to the attribute of the graphic element; When it is necessary to perform delayed color correction on the page, set the graphics element drawing area on the page as a transparent area; Perform overprint calculation on the to-be-drawn primitives in the transparent area to obtain a primitive lattice, perform color correction on the primitive lattice, and finally output the primitive lattice. 2. The method for setting graphics element drawing attributes according to claim 1, wherein when the page has an overprint attribute, the method further comprises: Create a resource statistics area table; Perform downscaling processing on the resource statistics area table. 3. The method for setting primitive drawing attributes according to claim 2, wherein the step of establishing a resource statistics area table specifically comprises: Divide the page into blocks according to the first preset height and the first preset width to obtain a first number of page drawing areas; Divide the page into blocks according to the second preset height and the second preset width to obtain a second number of page blocks; Recording the page drawing area and the page block to obtain the resource statistics area table; Wherein, the first number is smaller than the second number. 4. The method for setting a drawing attribute of a graphic element according to claim 3, wherein the step of acquiring the graphic element to be drawn and judging whether the graphic element to be drawn and the background of the page overlap, specifically comprises: : acquiring the to-be-drawn primitive, determining the drawing range of the to-be-drawn primitive, and determining the page drawing area corresponding to the drawing range in the resource statistics area table; Counting the number of the page blocks covered by the drawing range in the resource statistics area table; If the number of the page blocks covered by the drawing range is greater than a preset number, it is determined that the graphic element to be drawn overlaps with the background of the page; If the number of the page blocks covered by the drawing range is less than or equal to the preset number, it is determined that the graphic element to be drawn does not overlap with the background of the page. 5. The method for setting drawing attributes of primitives according to claim 3 or 4, wherein the step of performing down-multiplication processing on the resource statistics area table specifically includes: According to the preset magnification, the height of the resource statistics area table is set according to the first formula, and the width of the resource statistics area table is set according to the second formula; The first formula is Y=(H+H'×D)/H'×D, where Y represents the height of the resource statistics area table, H represents the height of the page, and H' represents the first preset height, D represents the preset magnification; The second formula is X=(W+W'×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, and W' represents the width of the page. the first preset width, W" represents the second preset width; The size of the resource statistics area table is proportional to the output resolution. 6. A system for setting primitive drawing attributes, wherein the system comprises: a scanning unit, configured to scan a page and determine whether the page has an overprint attribute; A graphic element acquiring unit, configured to acquire a graphic element to be drawn and determine whether the graphic element to be drawn overlaps with the background of the page when the page has an overlay attribute; a judging unit, configured to judge whether a delayed color correction needs to be performed on the page according to the attribute of the graphic element when the graphic element to be drawn overlaps with the background of the page; a setting unit, used for setting the graphics element drawing area on the page as a transparent area when the page needs to be delayed color correction; The processing unit is configured to perform overprint calculation on the primitives to be drawn in the transparent area to obtain a primitive lattice, perform color correction on the primitive lattice, and finally output the primitive lattice. 7. The setting system of primitive drawing attributes according to claim 6, characterized in that, further comprising: The establishment unit is configured to establish a resource statistics area table when the page has an overprint attribute; and perform down-multiplication processing on the resource statistics area table. 8. The setting system of primitive drawing attributes according to claim 7, wherein the establishment unit comprises: a block unit for dividing the page into blocks according to a first preset height and a first preset width to obtain a first number of page drawing areas; and dividing the page according to a second preset height and a second preset width The page is divided into blocks to obtain the second number of page blocks; The establishment unit is specifically configured to record the page drawing area and the page block to obtain the resource statistics area table; Wherein, the first number is smaller than the second number. 9. The setting system of primitive drawing attributes according to claim 8, wherein, The graphic element acquiring unit is specifically configured to acquire the graphic element to be drawn, determine the drawing range of the graphic element to be drawn, and determine the page drawing area corresponding to the drawing range in the resource statistics area table; The primitive acquiring unit includes: a statistics unit, configured to count the number of the page blocks covered by the drawing range in the resource statistics area table; a determining unit, configured to determine that the graphic element to be drawn overlaps the background of the page if the number of the page blocks covered by the drawing range is greater than a preset number; and if the drawing range covers the page block If the number of page blocks is less than or equal to the preset number, it is determined that the graphic element to be drawn does not overlap with the background of the page. 10. The setting system of primitive drawing attributes according to claim 8 or 9, wherein, The establishment unit is specifically configured to set the height of the resource statistics area table according to the first formula according to the preset magnification, and set the width of the resource statistics area table according to the second formula; The first formula is Y=(H+H'×D)/H'×D, where Y represents the height of the resource statistics area table, H represents the height of the page, and H' represents the first preset height, D represents the preset magnification; The second formula is X=(W+W'×D)/W'×D/W", where X represents the width of the resource statistics area table, W represents the width of the page, and W' represents the width of the page. the first preset width, W" represents the second preset width; The size of the resource statistics area table is proportional to the output resolution. 11. A computer device, comprising a memory, a processor and a computer program stored on the memory and running on the processor, wherein the processor implements the computer program as claimed in the claims The steps of any one of 1 to 5 of the method for setting the drawing properties of primitives. 12. A computer-readable storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the setting of the drawing attribute of a primitive as claimed in any one of claims 1 to 5 is realized steps of the method.

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