JPH09134439A - Picture processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce access to a memory and to execute high speed processing at the time of executing picture processing such as texture mapping or the like. SOLUTION: At the time of high speed picture processing such as texture mapping for displaying a moving image at a video rate, the writing position of an input picture 101 on an output picture 109 is calculated by an operation part 104 prior to the input of moving picture data as the input picture 101 and the calculated result is inputted to an address convertion table 106 as plotting position data 105. After inputting the input picture 101, its picture inputting address 102 is inputted to the table 106, which converts the address 102 in accordance with the data 105 and outputs the converted address as an input address 107 and a memory 108 stores the input picture data 103 in accordance with the address 107 and outputs an output picture 109.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus effective when applied to image processing involving image input / output.

[0002]

2. Description of the Related Art Conventionally, there is texture mapping as one of image processing for processing and outputting an input image.
FIG. 3 is a principle diagram of conventional texture mapping. In FIG. 3, reference numeral 301 is an input image, 302 is a memory that stores image data, 303 is an arithmetic unit that performs image processing to calculate a writing position of the input image, and writes the same. 304 is an input image that is stored in the memory 302. Arithmetic unit 303
Original image data before being processed by, 305 is processed image data as a result of being processed by the arithmetic unit 303, 3
06 is an output image which is an output for display from the memory 302,
A display unit 307 displays the output image 306.

When texture mapping is performed in the image processing apparatus shown in FIG. 3, the input image is the input image 30.
1 is input to the memory 302. Next, the calculation unit 30
3 reads the input image 301 as the original image data 304, calculates the writing position of the image, and writes it as the processed image 305 in the memory 302 according to the calculation result. The memory 302 outputs the processing result as an output image 306 to the display unit 307 for display.

[0004]

However, in the conventional image processing apparatus for performing texture mapping for processing and outputting the input image, the input image 301 is written to the memory every time the input image is input, Read-out of original image data 304 from the arithmetic unit and processed image data 3
Since 05 is written and the output image 306 is read out for display, a memory access conflict occurs, and the processing cannot be performed at high speed. The input image is a moving image and the output image is processed at a high speed such as a video rate. There was a problem that the processing could not be done in time when it was necessary.

The present invention solves the above-mentioned problems of the prior art. In performing high-speed image processing such as texture mapping in which a moving image is used as an input image and an output image is output at a video rate, high-speed processing is performed. An object is to provide image processing that can be realized.

[0006]

In order to achieve this object, an image processing apparatus of the present invention comprises an arithmetic unit for calculating a writing position of an input image, and an address conversion for storing the writing position calculated by the arithmetic unit. It has a configuration including a table, a memory for storing an input image at the address position converted by the address conversion table, and a display unit for displaying the input image stored in the memory as an output image.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The image processing apparatus of the present invention comprises an arithmetic unit for calculating the writing position of an input image, an address conversion table for storing the writing position calculated by the arithmetic unit, and conversion by the address conversion table. It has a configuration including a memory that stores an input image at the designated address position and a display unit that displays the input image stored in the memory as an output image.

With this configuration, when a moving image is used as an input image and high-speed image processing such as texture mapping for outputting an output image at a video rate is performed, a writing position of the input image is calculated before the input image is input. Calculation is performed in advance, the calculation result is saved as drawing data in the address conversion table, the input address of the input image is converted according to the address conversion table, and the input image data is stored in memory according to the converted input address. , And the data inside the memory is displayed on the display unit as output image data. As described above, in the above configuration, access to the memory can be reduced. As a result, image processing based on texture mapping can be performed at high speed.

(Embodiment 1) An embodiment of the present invention will be described below. FIG. 1 is a block diagram of an image processing apparatus showing a first embodiment of the present invention.

In FIG. 1, 101 is an input image and 102 is an input image.
Is an image input address indicating the writing position of the input image 101, 103 is input image data that is the value of the input image 101, 104 is a calculation unit that calculates and outputs the drawing position of the input image 101, and 105 is output from the calculation unit 104 The drawing position data 106, the address conversion table 106 for saving the drawing position data 105 and converting the image input address 102, 107 the input address converted by the address conversion table 106, and 108 the input image data 103.
Is a memory for storing and outputting the image, 109 is an output image output from the memory 108, and 110 is a display unit for displaying the output image 109.

In the image processing apparatus having the above structure, when performing image processing that requires high-speed processing such as texture mapping for displaying a moving image at a video rate, moving image data is input image 101. Input image 101 is output image 109 prior to being input as
The position to be written in is calculated by the arithmetic unit 104, and the result is input to the address conversion table 106 as the drawing position data 105.

When the input image 101 is input, the image input address 102 is input to the address conversion table 106. The address conversion table 106 stores the image input address 102 according to the drawing position data 105.
Is output as the input address 107, and the memory 108 stores the input image data 1 according to the input address 107.
03 is stored and the output image 109 is output to the display unit 110.

By the series of operations described above, the memory 108 storing the output image 109 when high-speed image processing is required
When the input image is input to the memory 108, the output image 10 is already stored on the memory 108.
Since the state 9 is realized, the processing speed in the image processing can be improved.

In the above structure, the address conversion table for changing the writing position prepared in advance according to the input image and the arithmetic unit for inputting the changing timing into the address conversion table may be provided.

(Second Embodiment) FIG. 2 is a block diagram of an image processing apparatus showing a second embodiment of the present invention. In FIG. 2, 201 is an input image, 202 is a memory for storing and outputting the input image, 203 is a calculation unit for calculating and outputting the read position of the output image, 204 is drawing position data output from the calculation 203, and 205 is output. An image output address indicating an image read position, 206 is an image output address 20 for storing the drawing position data output from the calculation unit 203.
5 is an address conversion table for performing the conversion of No. 5, 207 is an output address converted by the address conversion table 206, and 208 is the memory 2 according to the output address 207.
Reference numeral 209 denotes a display unit that displays the output image data output from 02, and output image data 208.

In the image processing apparatus having the above configuration, when performing high-speed image processing such as texture mapping in which a moving image is displayed at a video rate, moving image data is input image 201. The arithmetic unit 203 calculates in which position of the output image 208 the input image 201 is displayed, and the result is used as drawing position data 204 in the address conversion table 2.
Enter 06.

Next, when the image output address 205 for display is input to the address conversion table 206 at the time of display, the image output address 205 is converted according to the drawing position data 204 and output as the output address 207. To be done. The image data is read from the memory 202 as output image data 208 according to the output address 207 that has been output, and is displayed on the display unit 209.

By the series of operations described above, the number of accesses to the memory 202 storing the output image data 208 is reduced when high-speed image processing is required, and the output image is stored in the memory 2.
By realizing the state of the output image 208 when reading from 02, the processing speed in the image processing can be improved.

In the above structure, the address conversion table for changing the read position prepared in advance according to the input image and the arithmetic unit for inputting the change timing into the address conversion table may be provided.

(Third Embodiment) FIG. 4 is a block diagram of an image processing apparatus showing a third embodiment of the present invention. In FIG. 4, 401 is an input image, 402 is an image input address indicating the writing position of the input image 401, 403 is input image data that is the value of the input image 401, and 404 is a drawing position of the input image 401 and is output. The calculation units 1 and 405 are the drawing position data 1 and 4 output from the calculation unit 1 (404).
Reference numeral 06 is an address conversion table 1 for saving the drawing position data 1 (405) and converting the image input address 402;
Reference numeral 407 is an input address converted by the address conversion table 1 (402), 408 is a memory for storing and outputting the input image data 403, 409 is an arithmetic unit 2 for calculating and outputting a read position of the output image, and 410 is an arithmetic unit 2. (40
Drawing position data 2 and 411 output from 9) are image output addresses indicating the read position of the output image, and 412 is drawing position data 2 (4) output from the calculation unit 2 (409).
10) is stored and the image conversion address 411 is converted. Address conversion tables 2 and 413 are output addresses converted by the address conversion table 2 (412), and 414 is output image data output from the memory 408 according to the output address 413. 415 is output image data 414
Is a display unit for displaying.

In the image processing apparatus having the above configuration, when performing image processing that requires high-speed processing such as texture mapping for displaying a moving image at a video rate, moving image data is used as the input image 401. Input image 401 is output image 414 before being input.
The calculation unit 1 (404) and the calculation unit 2 (409) calculate which position of the writing position, and the result of the calculation unit 1 (404) is stored in the address conversion table 1 (406) as the drawing position data 1 (405). The result of the calculation unit 405 is input to the address conversion table 2 (412) as the drawing position data 2 (410).

When the input image 401 is input, the image input address 402 is converted into the address conversion table 1 (406).
Is input to The address conversion table 1 (406) converts the image input address 402 according to the drawing position data 1 (405) and outputs it as the input address 407, and the memory 408 stores the input image data 403 according to the input address 407.

Next, when the image output address 411 for display is input to the address conversion table 2 (412) at the time of display, the image output address 411 is converted and output according to the drawing position data 2 (410). It is output as the address 413. Image data is output from the memory 408 according to the output address 413 that is output.
It is read out as 4 and displayed on the display unit 415.

Through the series of operations described above, the memory 408 storing the output image 414 when high-speed image processing is required.
It is possible to improve the processing speed in the image processing by reducing the number of times of access to and realizing the state of the output image 414 when the input image is input to the memory 408 and when the output image is read from the memory 408.

In the third embodiment, the arithmetic unit 1
(404) and the arithmetic unit 2 (409) are prepared, but they are combined as one arithmetic unit, and the address conversion table 1 (406) and the address conversion table 2 (41) are combined.
It goes without saying that the same effect can be obtained by outputting the drawing position data 1 (405) and the drawing position data 2 (410) to 2).

The address conversion table for changing the writing position prepared in advance according to the input image and the arithmetic unit for inputting the timing of the change to the address conversion table may be provided.

Further, in the above configuration, the address conversion table for changing the read position prepared in advance according to the input image and the arithmetic unit for inputting the timing of the change to the address conversion table may be provided.

[0028]

As described above, according to the present invention, the arithmetic unit for calculating the writing position of the input image, the address conversion table for storing the writing position calculated by the arithmetic unit, and the address conversion table are used for conversion. By providing a memory for storing the input image at the address position and a display unit for displaying the input image stored in the memory as the output image, it is possible to reduce the access to the memory in the processing when performing the image processing by the texture mapping. When applied to image processing based on texture mapping, it is possible to realize an excellent image processing device that can realize high-speed texture mapping such that a moving image is an input image and an output image is output at a video rate. Is.

[Brief description of the drawings]

FIG. 1 is a block diagram of an image processing apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram of an image processing apparatus according to a second embodiment of the present invention.

[Fig. 3] Principle diagram of image processing by texture mapping

FIG. 4 is a block diagram of an image processing apparatus according to a third embodiment of the present invention.

[Explanation of symbols]

 101 input image 102 image input address 103 input image data 104 calculation unit 105 drawing position data 106 address conversion table 107 input address 108 memory 109 output image 110 display unit 201 input image 202 memory 203 calculation unit 204 drawing position data 205 image output Address 206 Address conversion table 207 Output address 208 Output image data 209 Display section 401 Input image 402 Image input address 403 Input image data 404 Calculation section 1 405 Drawing position data 1 406 Address conversion table 1 407 Input address 408 Memory 409 Calculation section 2 410 drawing position data 2 411 image output address 412 address conversion table 2 413 output address 414 output image data 415 display unit

Claims (8)

[Claims] 1. An arithmetic unit that calculates and outputs a writing position of an input image, an address conversion table that stores the writing position output from the arithmetic unit, converts an address of the input image input, and outputs the converted address. Image processing, comprising: a memory that stores data of an input image based on an address output from an address conversion table and outputs the output image; and a display unit that displays the output image output from the memory. apparatus. 2. An arithmetic unit that calculates and outputs a read position of an output image, an address conversion table that stores the read position output from the arithmetic unit, converts an address of the input output image, and outputs the converted address. An image processing apparatus comprising: a memory that stores an image and outputs an output image based on an address output from the address conversion table; and a display unit that displays the output image output from the memory. 3. The image processing apparatus according to claim 1, further comprising an address conversion table for changing a writing position prepared in advance according to an input image, and an arithmetic unit for inputting a change timing into the address conversion table. 4. The image processing apparatus according to claim 2, further comprising an address conversion table for changing a read position prepared in advance according to an input image and an arithmetic unit for inputting a change timing into the address conversion table. 5. An arithmetic unit 1 which calculates and outputs a writing position of an input image, and an address conversion table 1 which stores the writing position output from the arithmetic unit 1 and converts the address of the input image input and outputs it. An arithmetic unit 2 for calculating and outputting the read position of the output image; an address conversion table 2 for storing the read position output from the arithmetic unit 2 and converting and outputting the address of the input output image; A memory for storing the data of the input image based on the address output from the address conversion table 1 and outputting the output image based on the address output from the address conversion table 2, and an output image output from the memory are displayed. An image processing apparatus, comprising: 6. The image processing apparatus according to claim 5, wherein the arithmetic unit 1 and the arithmetic unit 2 according to claim 5 are combined into one arithmetic unit. 7. The image processing apparatus according to claim 5, further comprising an address conversion table for changing a writing position prepared in advance in accordance with an input image and an arithmetic unit for inputting a change timing into the address conversion table. 8. The image processing apparatus according to claim 5, further comprising an address conversion table for changing a read position prepared in advance according to an input image and an arithmetic unit for inputting a change timing into the address conversion table.