JP2635312B2 - Image processing device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an image processing apparatus that stores image data in a file format.

2. Description of the Related Art Conventionally, this type of document image processing apparatus reads an image from an image scanner, displays the image on a display, and then registers the image in a storage device such as an optical disk device. At the time of display, if the size of the input document is B5 or A4 size, it is displayed on the display in approximately the actual size, and B4
In the case of A3 or A3 size, it is displayed in a reduced size so that the whole image can fit on the display.

In order to enlarge or reduce the image, a memory for storing image data read from a document (hereinafter referred to as an image memory) and a memory for display (hereinafter referred to as a video memory) are physically different. Therefore, there is no need to enlarge / reduce the contents of the image memory even if the image is displayed in an enlarged / reduced manner. Therefore, in the registration of image data to an optical disk device or the like, even if the image data is displayed in an enlarged or reduced manner, the image data of the original image read can be registered. This means that even if the registration operator is interested in the image after the enlargement / reduction together with the original image data, it is necessary to register the image data of both images. This means that a large storage area of a storage device such as an optical disk for image data is required.

On the other hand, if only the original image data is registered to spare the storage area and the image data of the enlarged / reduced image is not stored and registered, if an enlarged / reduced display image is desired,
Display the original image data stored and registered in the storage device,
You have to perform the enlargement / reduction operation again. That is, in order to enlarge the display, the frame cursor must be moved again with a pointing device or the like, and then enlarged by using an enlargement function key or the like. Since the device cannot always be moved to the previous position, the same enlarged image as before cannot always be obtained.

[Problems to be Solved by the Invention] The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to change the original image data without requiring a special storage area. The present invention proposes an image processing apparatus capable of displaying image data at a desired position in a desired size.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, an image data storage means capable of storing a plurality of image data, and a plurality of image data stored in the image data storage means are provided. A search information storage unit for storing search information for searching for each of the image data; and a display unit for displaying the image data, and referring to the search information storage unit based on specific search information. The image processing apparatus that reads out image data corresponding to the specific search information from the image data storage unit and displays the read image data on the display unit is searched based on the specific search information. Instructing means for instructing, via an operator, a scaling factor and a display start position of a scaling process to be performed on image data, and a scaling factor and a display start position designated by the instructing unit, Instruction information storage means for storing corresponding to the search information stored in the search information storage means; scaling means for scaling image data based on the scaling factor; and image data corresponding to the specific search information. When displaying on the display unit, the magnification and the display start position corresponding to the specific search information are extracted from the instruction information storage unit, and the extracted image data corresponding to the specific search information is extracted. Control means for controlling the magnification of the partial image after the display start position by the scaling means and displaying the image data after the scaling.

[Operation] In the above configuration, the image data magnification and the display start position (e.g., x _1, y ₁ in the region 51a of FIG. 3) is associated with along with storage. By storing the zoom ratio and the display start position, the image data at the stored zoom ratio can be extracted from the stored partial image after the display start position, and the image data of the partial image can be extracted. Similarly, the image is displayed after being scaled according to the taken out magnification (for example, an enlarged image 71 in FIG. 4B).

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment of a document image processing apparatus to which the present invention is applied. Reference numeral 1 denotes a control unit for performing main control of the system, and has a μ-CPU (microcomputer) therein as described later. ), RAM (random access memory), ROM (read only memory), etc.
2 is a typewriter keyboard (TW) for inputting character data, functions, etc., 3 is a raster scan display system
It is a CRT display section (CRT). 4 is a pointing device (PD) used for position designation input on the display screen, 5 is an image reader (IR) for image input, and 6 is an optical disk device (OD) that stores a large amount of document image data in a non-rewritable manner. ,
Reference numeral 7 denotes a disk device (DSK) for storing search information of document image data stored in the optical disk device 6, and 8 denotes an image printer (PR) for printing high-quality documents. 9
Is an I / O bus, which connects the above 2 to 8 to the control unit 1.
The input unit of the above system is composed of TW2, PD4, IR5, the display unit is composed of CRT3, the storage unit is composed of OD6, DSK7, and the output unit is composed of PR8.

FIG. 2 is a configuration diagram centered on the control unit 1 in the above-described embodiment. In this figure, reference numeral 11 denotes an image memory for storing document image data, which stores document image data read from the image reader 5 or the optical disk device 6. 12
Is a video memory for the CRT3, and displays the bits of the CRT3 in black or white according to the bit values ("1", "0") of the memory 12. The image memory 11 and the video memory 12 are provided inside the control unit 1. Reference numeral 13 denotes a control unit 1, and μ of a micro computer or the like for controlling the entire system.
-CPU. Reference numeral 15 denotes a ROM for storing a program of a control procedure according to the embodiment, 16 denotes a RAM for storing various data, and 14 denotes a thinning circuit for thinning out bits from image data stored in the image memory 11.

In this embodiment, the resolution of the image data read by IR5 is higher than the resolution of CRT3. Therefore, the read image data is moved to the video memory 12
When displayed on T3, an enlarged image is obtained, while the thinning circuit
By thinning out the bits via 14, an arbitrary reduced image can be obtained.

FIG. 3 shows the state of the image memory 11 when the A4 size original is read from the IR5 or the image data is read from the optical disc device 6 at a resolution of 16 dots per mm by the image memory 11 and is expanded. It is illustrated.
In FIG. 3, it is assumed that characters “A”, “B”, “C”, “D” are stored as an example. In the drawing, (x ₁ , y ₁ ) and the like are transfer start positions when transferring from the image memory 11 to the video memory 12.

4 (a) to 4 (c) show the A4 size image shown in FIG. 3 in the horizontal direction (x direction) and the vertical direction (y direction) from the position of (x ₂ , y ₂ ), respectively. When thinned out by / 4, when transported from (x ₁ , y ₁ ) without thinning, 1/2 from (x ₃ , y ₃ )
This shows the case where each of them is thinned out. The image memory 11 has a size of 3456 dots x 4677 dots, and the video memory 12 has a resolution of 1/4 of the image memory 12, so that 864 dots x
It has a size of 1168 dots. Therefore, if thinned out, the image becomes as shown in FIG. 4 (a) or (c), and if it is not thinned out, the image of the original is enlarged as shown in FIG. 4 (b).

FIG. 5 and FIG. 6 are diagrams for explaining a file structure when search information for searching image data registered in the optical disk 6 is stored as a file in the DSK 7.
FIG. 5 shows a document management record, and FIG. 6 shows a page management record. The document management record represents a link to the page management record. The structure of the document management record shown in FIG. 5 includes the keyword 31a of the image data and the page management record (6th page) of the image data having the keyword.
Link) 31b.

In the “document management record” in the example of FIG. 5, a keyword can be set for each document. The user sets this keyword in a known manner. In the example of Fig. 5, "KEY-A1"
A document having a keyword (or “KEY-B2” or “KEY-C1”) (that is, an identifier or search information) is identified by
Th page is, "a _1" starting from the address "page management record."
Are defined by various information described below (described later). Similarly, "KEY-A2" document with a keyword (or "KEY-B2" or "KEY-C2"), the first page that is, "a _4" is described in starting from the address "page management record." It is defined by various kinds of information.

FIG. 6 is a diagram showing a configuration of a page management record.
The "page management record" includes a "size" field 41a indicating the size of one page of the document, a field 41b indicating an enlargement ratio of an image to be displayed on the CRT 3, and an "image coordinate" indicating a start coordinate position in the image memory 11. A field 41c, a "document storage position" field 41d indicating the position where the document is stored in the optical disk 6, and a field 41e indicating the link address to the next page are stored. The page management record forms one record by the above five fields 41a, 41b, 41c, 41d, 41e, and one record manages information for one page of a document.

The “size” field 41a records the size of the document of the page. This "size" determines the image memory
11 is determined.

The “enlargement ratio” field 41b stores the enlargement ratio of the size of the display image to the size of the original image when the page is displayed on the CRT 3. In this embodiment, the enlargement ratio is one time (1/4) of the actual size. For example, three “magnification ratios” of 2 times (requiring 1/2 thinning), 2 times (requiring 設定 thinning), and 4 times (no thinning) were set.

The “image coordinates” field 41c stores the coordinate position of the upper left corner of the partial image to be enlarged. As shown in FIG. 3, when the upper left corner of the image of the entire page is set to the coordinate position (0,0),
Indicates the relative dot position.

The "document storage location" field 41d stores the address of the image of the page stored in the optical disk device 6, and is composed of the addresses of the first sector (S) and the last sector (E).

The “link address of next page” field 41e stores the address of a record in which information of the next page is stored when a subsequent page exists. "Next page link address" field 41e contains "FF"
Indicates that there is no next page. That is, it indicates that the record is the information of the last page.

According to the two records shown in FIGS. 5 and 6, specifically, the page management record of the first page of the image of the keyword KEY-A1 / KEY-B2 / KEY-C1 is the address in DSK7.
stored in a _1, the magnification is 4, the image coordinates are (x _1, y _1), the image data have been stored in the S ₁ of the optical disc 6 to E _1, the link of the second Beji address has become a ...... it is a _2.

In FIG. 7, reference numeral 51 denotes a table in which the numbers of dots in the x and y directions for each document are stored. The table 51 is stored in the RAM 16 in the control unit 1. In this embodiment, for simplicity, the table is only for the case of 16 dots per 1 mm resolution.

Next, the registration / display operation of the enlarged image according to the present embodiment will be described with reference to the flowcharts shown in FIGS. A program for such a control procedure is stored in the ROM 15.

First, the description starts with the registration of the enlarged image shown in FIG. 8th
The “enlarged image registration” procedure shown in the figure is a procedure for registering, as an “enlarged image”, an image file that has been read in advance by the scanner (IR) 5 and saved on the optical disk (OD) 6. The menu is activated when an operator selects a menu. Therefore, the “size” of the image file and the “document storage position” information (S
And E) are known.

In step S1, the RAM 16 obtains an "enlargement ratio" indicating the display enlargement state of the image to be registered on the CRT 3 and "image coordinates" from the RAM 16. "Registering enlarged images"
The procedure is to specify the “magnification ratio” information by the operator via the keyboard (TW2) and read what the system has stored in the RAM 16, and to determine the “image coordinates” of the image to be enlarged. Means that the operator is a mouse (PD4 etc.)
, Which is input during the registration operation and is also stored in the RAM 16 to be known. As described above, since other "document storage positions" necessary for creating the "page management record" are already known at the time of scanning with the scanner, the "page management record" is created in step S1. can do.

Then, in step S2, "FF" is set in the "link address of the next page" portion of the "page management record" created in step S1, and recorded as a one-page management record in the search information file (step S3). ).

The procedure from step S4 to step S6 is performed for each page of the image file to be “enlarged” currently registered.
That is, it is determined which page of the document is the page of the image file just recorded. If it is the first image file to be registered, the page recorded in step S1 is the first
Page. In that case, the process proceeds to step S5, and the "link address to the first page" field of the "document management record" 31 (FIG. 5) is updated. Meanwhile, if the step
If the page recorded in S1 is the second or subsequent page and the page before the last page, the process proceeds to step S6, and the “page management record” of the page corresponding to the page immediately before the page recorded in step S1 In step 41, the “link address” of the page recorded in step S1 is stored in the “link address of next page” field.

In this manner, a plurality of images having an arbitrary enlargement / reduction ratio can be registered from one image. In this case, as long as the original image is the same, even if a plurality of images are registered, only the search information is increased, and there is no need to store the data of the scaled image file, and the image file is recorded on the optical disk 6. Only one image data is required.

In the “document management record” in FIG. 5, one document is 3
An example is shown in which there are a plurality of pieces of search information that are composed of one “keyword” and have the same content for some of the keywords. For example, in the example of FIG. 5, the first keyword of the first document is “KEY-A1”, and the first keyword of the third document is also “KEY-A1”. As described above, a plurality of documents in which some keywords are the same and other keywords are different indicate that the original image is the same, and such a keyword is determined in step S1.
The operator inputs from the keyboard. By using the same keyword for the same original image, the operator can determine which page of which image is the same original image and only the enlargement magnification is different in the “display of enlarged image” procedure described later. You can know if there is.

Next, the operation of displaying an enlarged image will be described with reference to FIG. For convenience of description, it is assumed that the specification of the image to be enlarged and displayed (that is, the specification of the keyword) is performed using a keyboard or the like. Further, the dot width in the x direction of the window to be enlarged and displayed (see FIGS. 4B and 4C)
Let x _Q and the dot width in the y direction be y _Q. Alternatively, the resolution of the CRT 3 to be displayed is set to 4 dots per 1 mm.

First, in step S7, the image data of the image to be enlarged and displayed is read from the search information file into the image memory 11, and the page management record 41 is read into the RAM 16. Magnification field 41 of the page management record
The range to be displayed on the CRT 3 is determined based on b (step S8).

If the enlargement ratio is twice, the image data in the image memory 11 having the 2 × x _Q dot width and the 2 × y _Q dot width is displayed in the width of (x _Q , y _Q ) in step S9 and thereafter. The image data of 2 × y _Q dot width is reduced to 1/2 by 2 × x _Q dot width.
That is, in step S10, the thinning circuit 14 thins out the image data in the x direction by extracting one bit at a time from the "x" value of the "image coordinate" field 41c in the x direction at one dot intervals. In step S11, image data is extracted one bit at a time at one dot interval from the "y" value of the "image coordinate" field 41c in the y direction, thereby thinning out in the y direction.

If the enlargement ratio is four, in step S12, the display range in the x direction is set to x _Q dots, and the display range in the y direction is set to y _Q dots. That is, image data for x _Q dots x y _Q dots
x _Q dot x y _Q dot width
In the case of double, there is no need to reduce (enlarge).

If the enlargement ratio is 1, in step S13, the "size" of the "page management record read in step S7"
Referring to the table 51 in FIG. 7 based on the field 41a, the "number of dots in the x direction" and the "number of dots in the y direction" corresponding to the "size" are obtained. The display with a magnification of 1 times means that the image data of 16 dots / mm is displayed on the CRT 3 of 4 dots / mm since the display is the actual size display. It needs to be reduced to / 4. That is, the dots in the x direction are extracted at a rate of once every four dots and thinned out. In step S15, the number of dots in the y direction is also 4
Take out the dots at once. In step S16, when the reduced result is transferred to the memory 12, the target image is displayed on the CRT 3.

In the above embodiment, only the image of 16 dots per 1 mm has been described. However, in the case of 12 dots per mm and 8 dots, the resolution information is further added to the page management record, and the thinning rate is changed according to the resolution. Or, it may be changed so as to enlarge.

As described above, according to the above-described embodiment, the total amount of image data read from the input unit is recorded on the original size-spectrum disk device as in the related art, but when registered in an enlarged state on the CRT, Since it is enlarged and displayed at the time of retrieval, there is an effect that it seems as if the pseudo enlarged part has been registered, which is effective in reducing the recording area of the optical disk device.

Also, if you want to enlarge the target part by the conventional method, you must specify the part you want to enlarge in some way and then instruct enlargement, and you want to enlarge the same part every time you search Although it was very inconvenient, if you use the above embodiment, if there is a part that you want to always enlarge and refer to when searching, you need to enlarge it when registering and then register it. It becomes unnecessary.

Another advantage is that since the portion other than the enlarged portion is also recorded on the optical disc device, it is possible to display the original actual size in an actual size.

Although the above embodiment has been described by taking the enlargement / reduction as an example, it can be applied to general image processing which is not limited to enlargement / reduction.

[Effect of the Invention] As described above, in the image processing apparatus of the present invention,
For the image data searched based on the specific search information, the operator is instructed on the scaling ratio and the start position of the partial image to be scaled, and the indicated scaling ratio and the display start position correspond to the search information. I remember. When displaying the stored image data, a partial image of the image data is specified from the stored display start position, and the partial image is scaled and displayed according to the stored magnification. I do.

Therefore, according to the image processing apparatus of the present invention, it is possible to give the operator an operational feeling as if the scaled image data is stored while the original image data is kept. That is, the present invention provides, for a desired portion of the searched image data without changing the original image data,
The display in a desired size is realized.

[Brief description of the drawings]

FIG. 1 is a block diagram showing the configuration of a document image processing apparatus according to an embodiment of the present invention, FIG. 2 is a block diagram showing the configuration of a control unit in the embodiment of FIG. 1, FIG. 3 and FIG. (C) is an explanatory diagram of the operation of the embodiment, FIGS. 5 and 6 are configuration diagrams of a search information file, FIG. 7 is a configuration diagram of a display size parameter for each document size, and FIGS. 8 and 9 are inventions. 5 is a flowchart showing an enlarged image registration and display operation of FIG. In the figure, 1 ... control unit, 2 ... TW, 3 ... CRT, 4 ... P
D, 5 ... IR, 6 ... OD, 7 ... DSK, 8 ... PR, 11 ...
Image memory, 12: Video memory, 13: μ-CP
U, 51a, 61a: frame indicating expansion range, 61, 71: window, 31: document management record, 31a: keyword, 31b
...... Address of the first page, 41 ...... Page management record, 41a ...... Size, 41b ...... Enlargement ratio, 41c ...... Image coordinates, 41d ...... Document storage position, 41e ...... Link address of next page, 51 ... ... table of document size, 51a ... size, 51b ... number of dots in x direction, 51c ... number of dots in y direction.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-57-78086 (JP, A) JP-A-58-1558769 (JP, A) JP-A-59-183458 (JP, A) JP-A-60-1985 157644 (JP, A) JP-A-60-225981 (JP, A) JP-A-57-78251 (JP, A)

Claims (2)

(57) [Claims] An image data storage means capable of storing a plurality of image data, and search information for searching each image data corresponding to each image data stored in the image data storage means. A search information storage unit, and a display unit for displaying image data, wherein the image data corresponding to the specific search information is stored by referring to the search information storage unit based on the specific search information. An image processing apparatus that reads out the read image data from the means and displays the read image data on the display means, wherein a scaling ratio and a display start position of a scaling process to be performed on the image data searched based on the specific search information are determined. Instructing means for instructing through an operator, and a scaling ratio and a display start position instructed by the instructing means are stored in correspondence with the search information stored in the search information storage means. Instruction information storage means, scaling means for scaling image data based on the scaling factor, and displaying the image data corresponding to the specific search information on the display means, The magnification and the display start position stored correspondingly are taken out from the instruction information storage means, and the image data corresponding to the specific search information, the partial image after the taken out display start position, An image processing apparatus comprising: control means for controlling the magnification by the magnification means and displaying the image data after the magnification. 2. The image processing apparatus according to claim 1, wherein said image data storage means is an optical disk device or a magnetic disk device.