JP2001126071A - Device and method for pipeline image processing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To generate in real time the luminance profile of a digital dynamic image updated at high speed. SOLUTION: Pixel strings which are located on a line parallel to an x-axis and from which a luminance file is to be prepared are outputted by the portion of the number of the gradations of the luminance of the original image from a memory 1 storing digital original images via an output gate 1d and they are arranged in parallel with the x-axis to generate an intermediate image. Further, a y-coordinate value counter 2 and a comparator 3 compare the luminance of a pixel with its y-coordinate value by each pixel represented by the x-axis and y-axis of the intermediate image and extract a pixel where the luminance and the y- coordinate value are in arrangement to generate a luminance profile. Further, pixel strings which are located on a line parallel to the y-axis and from which a luminance file is to be prepared are outputted by the number of the gradations of the luminance of the original image from the memory 1 storing digital original images via the output gate 1d and they are arranged in parallel with the y-axis to generate an intermediate image. Further, an x- coordinate value counter 2' and the comparator 3 compare the luminance of a pixel with its x-coordinate value by each pixel represented by the x-axis and y-axis of the intermediate image and extract a pixel where the luminance and the x-coordinate value are in agreement to generate a luminance profile.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a pipeline image processing apparatus and a pipeline image processing method for generating a luminance profile of an image.

[0002]

2. Description of the Related Art It is known that the focus of an image pickup optical system and the brightness of an image are adjusted using a brightness profile in which the brightness of each pixel of an image is graphically displayed.

[0003] A luminance profile will be described with reference to FIGS. 7 and 8. FIG. 7 shows an example of a digital image,
This image has a total of 512 × 480 pixels of 512 pixels in the x-axis direction and 480 pixels in the y-axis direction, and displays the luminance in 8 bits, that is, 256 levels for each pixel. Note that the pixel coordinates at the upper left corner of the screen are the origin (0,
0), and the pixel coordinate at the lower right corner is (511,479). FIG. 8 is a line graph showing a luminance profile on a horizontal line parallel to the x-axis of y = Y1 in the image shown in FIG. 1, in which the horizontal axis represents the x coordinate and the vertical axis represents the luminance b.

[0004] This luminance profile graph is represented by y = Y1.
The computer reads the luminance of each pixel on the line in the order of x coordinate, draws a point on the computer screen at the position corresponding to the x coordinate and luminance, and creates a line graph by connecting adjacent points. is there.

[0005] A luminance profile can also be created for a vertical line parallel to an arbitrary y-axis at x = X1. Further, as shown in FIG. 7, a luminance profile can be created for an image in a rectangular frame a parallel to the x-axis. In this case, an average luminance value is obtained for each pixel having the same x coordinate, and a luminance profile is created based on the average luminance value. In a similar manner, a luminance profile for an image in a rectangular frame parallel to the y-axis can be created.

[0006]

By the way, when a brightness profile of a digital moving image whose image continuously changes is created, if the update speed of the image exceeds the processing speed of the computer or the access speed to the memory. In addition, there is a problem that a luminance profile for a digital moving image cannot be updated in real time.

An object of the present invention is to generate a luminance profile of a digital moving image that is updated at a high speed in real time.

[0008]

Means for Solving the Problems Claims 1 and 2 correspond to FIG. 1 showing the structure of the first embodiment of the present invention.
(1) According to the first aspect of the present invention, a pixel array on a line parallel to the x-axis for which a luminance profile is desired to be created is stored in a memory 1 for storing a digital original image by the number of gradations of the luminance of the original image. And an output gate 1d that arranges them in parallel with the x-axis to generate an intermediate image, and compares the luminance and y-coordinate value of the pixel for each pixel indicated by the x-axis and y-axis of the intermediate image, y
The apparatus includes a y-coordinate value counter 2 and a comparator 3 for extracting pixels whose coordinate values match each other, and generates a brightness profile from pixels whose brightness matches the y-coordinate value. (2) According to the second aspect of the present invention, a pixel row on a line parallel to the y-axis for which a luminance profile is to be created is output by the number of gradations of the luminance of the original image from the memory 1 storing the digital original image. An output gate 1d that generates an intermediate image by arranging the image in parallel with the y-axis, and compares the luminance of the pixel and the x-coordinate value of each pixel indicated by the x-axis and the y-axis of the intermediate image to determine the luminance and x
An x-coordinate value counter 2 ′ for extracting a pixel having the same coordinate value and a comparator 3 are provided, and a luminance profile is generated from the pixels having the same luminance and the same x-coordinate value.
The invention according to claims 3 to 5 will be described with reference to FIG. 4 showing the configuration of the second embodiment of the invention. (3) The pipeline image processing apparatus according to claim 3 is configured so that the x-axis or a matrix calculator 14 for calculating, for each pixel on a line parallel to the y-axis, a total value of luminance of a predetermined number of pixels above and below and / or to the left and right of the pixel; A shifter 15 or a look-up table for calculating an average luminance value of a predetermined number of pixels based on the total luminance value for each pixel on a parallel line; and a pixel on a line parallel to the x-axis or the y-axis. The luminance profile is generated based on the luminance average value of the luminance. (4) The pipeline image processing device according to claim 4 includes a multiplier 13 for multiplying the luminance of each pixel output from the output gate 1d by a predetermined value. (5) The pipeline image processing device according to claim 5, wherein the y-coordinate value counter is a preset type subtraction counter 2, 1.
1 and 12, and the number of gradations of the luminance of the original image is preset before the generation of the luminance profile. The invention according to claims 6 and 7 will be described with reference to FIG. 1 showing the configuration of the first embodiment of the invention. (6) The invention according to claim 6 is based on the following description. A first row of pixel rows on a line parallel to the x-axis for which a brightness profile is desired to be created is output by the number of gradations of the brightness of the original image via the output gate 1d, and arranged in parallel to the x-axis to generate an intermediate image. And the y coordinate value counter 2 and the comparator 3 perform the x
A second process of comparing the luminance of the pixel and the y-coordinate value for each pixel indicated by the axis and the y-axis and extracting a pixel having the same luminance and y-coordinate value is performed. A luminance profile is generated by matching pixels. (7) According to a seventh aspect of the present invention, a pixel array on a line parallel to the y-axis for which a luminance profile is desired to be created from a memory 1 for storing a digital original image via an output gate 1d is divided by the number of gradations of the luminance of the original image. , And a first processing of arranging them in parallel with the y-axis to generate an intermediate image, and an x-coordinate value counter 2 ′ and a comparator 3 for each pixel indicated by the x-axis and the y-axis of the intermediate image. A second process of comparing the luminance of the pixel with the x-coordinate value and extracting a pixel having the same luminance and the x-coordinate value is performed, and a luminance profile is generated by the pixel having the same luminance and the x-coordinate value. Claims 8 to 10 corresponding to FIG. 4 showing the configuration of the second embodiment of the invention.
(8) In the pipeline image processing method according to the sixth aspect of the present invention, the matrix operation unit 14 uses the matrix operation unit 14 for each pixel on a line parallel to the x-axis or the y-axis of the original image, and Or a third process of calculating the total value of the luminance of a predetermined number of pixels existing on the left and right, and for each pixel on a line parallel to the x-axis or the y-axis of the original image by the shifter 15 or the lookup table, Performing a fourth process of calculating an average brightness value of a predetermined number of pixels based on the total brightness value before performing the first process and the second process; and performing a process on a line parallel to the x-axis or the y-axis. A luminance profile is generated based on a luminance average value of a certain pixel. (9) In the pipeline image processing method according to the ninth aspect, the brightness of each pixel output from the output gate 1d by the multiplier 13 is multiplied by a predetermined value. (10) The pipeline image processing method according to claim 10 is:
Preset type subtraction counter 2,
11 and 12, where the number of gradations of the luminance of the original image is preset prior to the generation of the luminance profile.

In the section of the means for solving the above-described problem, a diagram of one embodiment is used for easy understanding of the description, but the present invention is not limited to the embodiment. .

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS << First Embodiment of the Invention >> FIG.
FIG. 3 is a diagram showing a configuration of the first embodiment. In this embodiment, as shown in FIG. 7, an example is shown in which a digital moving image in which each of 512 × 480 pixels is represented by 256 gradations of luminance is processed. The image memory 1 is a double buffer memory for capturing a moving image that changes continuously and temporarily storing the moving image. The computer 7 sets the input gate 1c so that moving images are alternately taken into the two sets of memories 1a and 1b, and generates luminance data on the y = Y1 (arbitrary) line for which a luminance profile is to be generated as shown in FIG. The output gate 1d is set so that b (0, Y1) to b (511, Y1) are repeatedly output 256 times. Where b (x,
y) represents the luminance (256 gradations) of the pixel at the coordinates (x, y).

When a new image is generated by arranging the luminance data b (0, Y1) to b (511, Y1) 256 times output from the memory 1 in order from the top, 512 × 256 pixels, y = 0 to 2
The luminance distribution of all 55 horizontal lines is y = Y of the original image.
An image that is exactly the same as the luminance distribution of one line is generated. This image is called an “intermediate image” between the original image and the luminance profile. In this intermediate image, the pixel coordinates of the upper left corner are defined as the origin (0,0), and the pixel coordinates of the lower right corner are defined as (511,25).
5). This image is the input terminal 3a of the comparator 3.
Sent to

The y-coordinate value counter 2 outputs luminance data b (0, Y1) to y = Y1 line from the output gate 1d of the memory 1.
Counts up every time b (511, Y1) is output.
255 y-coordinate values are sequentially output. That is, first, y =
When the luminance data b (0, Y1) to b (511, Y1) of the Y1 line are output, y = 0 is output, and then the luminance data b (0, Y1) to b (511, y) of the y = Y1 line are output. When Y1) is output, y = 1
Is output. Hereinafter, the luminance data b of the y = Y1 line in order
Each time (0, Y1) -b (511, Y1) is output, y = 2,3 ,.
.. Output the y coordinate value in the order of 255. This y coordinate value is sent to the input terminal 3b of the comparator 3. In addition,
When receiving the luminance profile generation start command from the computer 7, the y-coordinate value counter 2 resets the count value to 0 and starts counting.

The comparator 3 compares the luminance of each pixel of the intermediate image input from the image memory 1 via the input terminal 3a with the y coordinate value input from the y coordinate value counter 2 via the input terminal 3b. If they match, a value of 255 (white) is output, and if they do not match, 0 is output.
(Black) value is output. In the intermediate image input from the image memory 1 via the input terminal 3a, the luminance of each pixel of x = 0 to 511 on each line of y = 0 to 255 corresponds to the luminance of the y = Y1 line of the original image shown in FIG. The luminances are the same as the luminances b (0, Y1) to b (511, Y1) of each pixel of x = 0 to 511. The comparator 3 compares the luminance (256 gradations) of each pixel of x = 0 to 511 with the y coordinate value for each line of y = 0 to 255 of the intermediate image input from the image memory 1. For example, coordinates (0,100) to (511,
100) pixel luminance (256 gradations) and y coordinate value 100
Compare with If the luminance represented by 256 gradations and the y coordinate value match, a value of 255 (white) is output, and if they do not match, a value of 0 (black) is output.

That is, luminance data b (0, Y1) to b (511, Y1) on an arbitrary line y = Y1 for which a luminance profile of an original image shown in FIG. 7 is to be generated is repeatedly read out 256 times and arranged in order from the top. Generate an intermediate image of 512 × 256 pixels. Origin is the pixel coordinate of the upper left corner of this intermediate image
(0,0), the pixel coordinates of the lower right corner are (511,255),
The luminance of 256 gradations and the y coordinate value are compared for each pixel, and if they match, 255 (white) is output, and if they do not match, 0 (black) is output. When this process is performed on all 512 × 256 pixels, a luminance profile of the y = Y1 line of the original image shown in FIG. 2 is generated.

FIG. 2 shows an example of a luminance profile generated by the comparator 3. When a luminance profile is generated by the comparator 3, 255 pixels whose luminance and y-coordinate value match each other are assigned to each pixel.
(White) and the unmatched pixels are set to 0 (black). This is a value when displayed on the monitor screen, and is for the purpose of displaying the luminance profile in white on a black background on the monitor screen for easy viewing. However, the black and white graph display is hard to see on the paper as shown in FIG. 2, so that the brightness profile is displayed in black on a white background by inverting black and white. In this pipeline image processing, the luminance data on the y = Y1 line of the original image is read out 256 times and arranged in order from the top to generate an intermediate image, and the upper left corner of the intermediate image is set as the origin (0, 0). The profile graph is upside down from the brightness profile graph shown in FIG.

The image memory 4 captures and stores the luminance profile output from the comparator 3 via the input gate 4a. The image memory 4 also sends the stored luminance profile to the D / A converter 5 via the output gate 4b, converts it into analog data, and displays it on the monitor 6.

The input gate 1c and the output gate 1d of the image memory 1, the y-coordinate value counter 2, the comparator 3, and the input gate 4a and the output gate 4b of the image memory 4 do not include a computer.

The computer 7 has an output gate 1d of the image memory 1, a y-coordinate value counter 2, and a comparator 3.
Then, a luminance profile generation start command is sent to the input gate 4a of the image memory 4 to start the above-described luminance profile generation processing. The computer 7
Sends a command to start generating a brightness profile to the device 1
d, 2, 3, and 4a, but have no effect on the generation of the actual luminance profile. The computer 7 also sends a display command of a luminance profile to the output gate 4b of the image memory 4, and causes the monitor 6 to display the generated luminance profile.

As described above, a pixel row (pixel row) on a horizontal line for which a luminance profile is to be created is output from the image memory 1 storing the original image through the output gate 1d 256 times with the number of gradations of the luminance of the original image. Are arranged in parallel with the x-axis to generate an intermediate image. Next, the y-coordinate value counter 2 and the comparator 3 compare the luminance and the y-coordinate value for each pixel indicated by the x-axis and the y-axis of the intermediate image, and determine a pixel having the same luminance and y-coordinate value. The luminance profile was extracted and generated. Thus, since image processing is performed without using a computer, a luminance profile of a digital moving image can be generated in real time without being restricted by the processing speed of the computer.

<< Modification of First Embodiment of the Invention >> In the above-described embodiment, an example has been described in which a luminance profile on a horizontal line parallel to the x-axis of the original image is generated. Luminance profiles on parallel vertical lines can also be generated. In this case, the output gate 1d outputs a pixel row (luminance row) on a vertical line for which a luminance profile is desired to be generated 256 times as the number of gradations of the luminance of the original image, and arranges them in parallel with the y-axis to generate an intermediate image. I do. next,
In place of the y-coordinate value counter 2, an x-coordinate value counter 2 'for sequentially outputting values of x = 0 to 511 is provided, and the x-axis and the y-axis of the intermediate image are determined by the x-coordinate value counter 2' and the comparator 3. Luminance and x for each pixel indicated by the axis
The brightness profile may be generated by comparing the coordinate value and extracting a pixel having the same brightness as the x-coordinate value.

<< Other Modifications of the First Embodiment of the Invention >>
In the first embodiment described above, the comparator 3
Is performed when the luminance input from the input terminal 3a is smaller than the y-coordinate value input from the input terminal 3b.
(White), otherwise 0 (black),
That is, the luminance and the y-coordinate value are compared for each pixel indicated by the x-axis and the y-axis of the intermediate image output from the memory 1,
If the luminance is smaller than the y-coordinate value and 255 (white) is output, otherwise 0 (black) is output to generate a luminance profile, a luminance profile of a bar graph as shown in FIG. 3 can be generated.

<< Second Embodiment of the Invention >> FIG. 4 shows the configuration of the second embodiment. The same components as those shown in FIG. 1 are denoted by the same reference numerals, and the description will focus on the differences. The constant memory 11 stores a constant 255.
The subtractor 12 has 255 data stored in the constant memory 11.
Is subtracted from the y-coordinate value of the y-coordinate value counter 2 from 0 to 255, and luminance data b (0, Y1) to b (511, Y1) of the y = Y1 line are output from the output gate 1d of the memory 1. , The y coordinate values of 255 to 0 are sequentially output. That is,
First, luminance data b (0, Y1) to b (511, Y) of the y = Y1 line
When 1) is output, y = 255 is output, and then y = Y
When one line of luminance data b (0, Y1) to b (511, Y1) is output, y = 254 is output. Thereafter, every time the luminance data b (0, Y1) to b (511, Y1) of the y = Y1 line is output, the y coordinate value is output in the order of y = 253, 252,...

By using the constant memory 11 and the subtractor 12, the y coordinate value representing the luminance is inverted, and the luminance profile shown in FIG. 5 can be generated by inverting the luminance profile shown in FIG. The brightness profile shown in FIG. 5 corresponds to the brightness profile shown in FIG. By inverting the y-coordinate value by the constant memory 11 and the subtractor 12, it is possible to display the luminance value such that the luminance value increases as the y-axis representing the luminance increases from bottom to top,
An easy-to-see luminance profile can be generated.

Note that, instead of using the y-coordinate value counter 2, the constant memory 11, and the subtractor 12, a preset type subtraction counter may be used as the y-coordinate value counter 2. That is, before starting the generation of the luminance profile, the computer 7 sets the maximum luminance value 255 to the preset value of the preset-type subtraction counter, and transmits the luminance data b (0, Y1) to b (511, Y1)
Is decremented each time is output, and y =
The y coordinate values are output in the order of 253, 252,..., 0.

The multiplier 13 multiplies the luminance data output from the output gate of the image memory 1 by a predetermined value and outputs the result. Y representing luminance by using the multiplier 13
The coordinate value is enlarged, and the luminance profile shown in FIG. 6 in which the y coordinate value of the luminance profile shown in FIG. 2 is enlarged can be generated. That is, the image memory 1 is output by the multiplier 13.
Is multiplied by a predetermined value to the luminance data output from the, the luminance can be arbitrarily enlarged and represented, and a luminance profile that is easy to see can be generated.

The matrix calculator 14 is a device that calculates the sum of the luminance values of a predetermined number of pixels above and below (columns) and / or left and right (rows) of each pixel, and uses the result as the luminance value of the pixel. For example, for an arbitrary pixel on the horizontal line of the original image, a total of four values obtained by adding the luminance of the pixel itself, the luminance of one pixel above it, and the luminance of two pixels below it The total luminance value of the pixel is output. The shifter 15 bit-shifts the total luminance value by the number of pixels to which the luminance has been added by the matrix calculator 14, and outputs a luminance average value. When the total value of the four pixel luminances is calculated by the matrix calculator 14, the luminance total value is shifted right by two bits to make the pixel 1
An average luminance value per unit is obtained. Note that the average luminance value can be obtained by using a 16-bit look-up table instead of the shifter 15.

The matrix calculator 14 and the shifter 15 calculate an average luminance value for each x-coordinate with respect to pixels in a rectangular frame a parallel to the x-axis as shown in FIG. A brightness profile can be generated. Note that a luminance profile for a rectangular frame (not shown) parallel to the y-axis can be generated in a similar manner.

When a luminance profile of a single line parallel to the x-axis or the y-axis is generated, it is susceptible to noise mixed into the luminance value itself. By generating a luminance profile of an image, it is possible to generate a luminance profile that is less affected by noise or the like.

In each of the above-described embodiments, an example has been described in which a luminance profile of a digital moving image is generated. However, the present invention can be applied to a digital still image, and the luminance profile of a still image can be generated at high speed. Can be generated.

Further, in each of the embodiments described above, the case where the luminance of the digital original image is 256 gradations has been described, but the number of gradations of the original image is not limited to the above embodiment.

[0031]

(1) As described above, according to the present invention, a pixel row on a line parallel to the x-axis for which a luminance profile is desired to be created from a memory for storing a digital original image via an output gate is obtained. Output is performed for the number of gradations of the luminance of the image, and they are arranged in parallel with the x-axis to generate an intermediate image.
Further, the luminance of the pixel and the y-coordinate value are compared for each pixel indicated by the x-axis and the y-axis of the intermediate image by the y-coordinate value counter and the comparator, and a pixel having the same luminance and y-coordinate value is extracted. To generate a brightness profile. In addition, a pixel array on a line parallel to the y-axis for which a luminance profile is to be created is output from the memory storing the digital original image through the output gate by the number of gradations of the luminance of the original image, and is output in parallel with the y-axis. To generate an intermediate image. Further, the luminance of the pixel and the x-coordinate value are compared for each pixel indicated by the x-axis and the y-axis of the intermediate image by the x-coordinate value counter and the comparator, and a pixel having the same luminance and the x-coordinate value is extracted. To generate a brightness profile. Thus, since image processing is performed without using a computer, a luminance profile of a digital moving image can be generated in real time without being restricted by the processing speed of the computer. (2) Further, according to the present invention, by the matrix calculator,
For each pixel on a line parallel to the x-axis or y-axis of the original image, the sum of the luminance values of a predetermined number of pixels located above and below and / or left and right of the pixel is calculated. Further, for each pixel on a line parallel to the x-axis or y-axis of the original image, a luminance average value of a predetermined number of pixels is calculated based on the total luminance value by a shifter or a lookup table, and x
A luminance profile is generated based on a luminance average value of pixels on a line parallel to the axis or the y-axis. This makes it possible to generate a luminance profile of an image in a rectangular frame parallel to the x-axis or the y-axis of a digital moving image in real time without being restricted by the processing speed of a computer, and to reduce the influence of noise and the like. You can get a profile. (3) Further, according to the present invention, the brightness of each pixel output from the output gate is multiplied by the predetermined value by the multiplier, so that the brightness can be arbitrarily enlarged and represented, and the brightness profile is easy to see. Can be generated. (4) Furthermore, according to the present invention, the y-coordinate value counter is a preset type subtraction counter, and the number of gradations of the luminance of the original image is preset before the luminance profile is generated. The display can be performed such that the luminance value increases from the bottom to the top, and an easy-to-view luminance profile can be generated.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a first embodiment.

FIG. 2 is a diagram illustrating an example of a luminance profile generated according to the first embodiment.

FIG. 3 is a diagram illustrating an example of a luminance profile generated according to a modification of the first embodiment.

FIG. 4 is a diagram illustrating a configuration of a second embodiment.

FIG. 5 is a diagram illustrating an example of a luminance profile generated according to the second embodiment.

FIG. 6 is a diagram illustrating an example of a luminance profile generated according to the second embodiment.

FIG. 7 is a diagram illustrating an example of a digital image.

FIG. 8 is a diagram showing an example of a luminance profile generated by a conventional drawing method.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Image memory 1a, 1b Image memory 1c Input gate 1d Output gate 2, 2 'y coordinate value counter 3 Comparator 4 Image memory 4a Input gate 4b Output gate 5 D / A converter 6 Monitor 7 Computer 11 Constant memory 12 Subtractor 13 Multiplier

Claims (10)

[Claims] 1. A pixel array on a line parallel to the x-axis for which a luminance profile is to be created is output from a memory for storing a digital original image by the number of gradations of the luminance of the original image, and these are arranged in parallel with the x-axis. An output gate for generating an intermediate image, and comparing the luminance of the pixel and the y-coordinate value of each pixel indicated by the x-axis and the y-axis of the intermediate image, and extracting a pixel having the same luminance and y-coordinate value. A pipeline image processing apparatus, comprising: a coordinate value counter and a comparator, wherein a luminance profile is generated by a pixel whose luminance coincides with a y-coordinate value. 2. A pixel array on a line parallel to the y-axis for which a luminance profile is to be created is output from a memory for storing a digital original image by the number of gradations of the luminance of the original image, and these are arranged in parallel with the y-axis. An output gate for generating an intermediate image, and comparing the luminance of the pixel with the x coordinate value for each pixel indicated by the x axis and the y axis of the intermediate image, and extracting a pixel having the same luminance and x coordinate value. A pipeline image processing apparatus, comprising: a coordinate value counter and a comparator, wherein a luminance profile is generated by a pixel whose luminance coincides with an x-coordinate value. 3. The pipeline image processing apparatus according to claim 1, wherein each of the pixels on a line parallel to the x-axis or the y-axis of the original image exists above and below and / or to the left and right of the pixel. A matrix calculator for calculating the total value of the luminance of a predetermined number of pixels to be processed; and for each pixel on a line parallel to the x-axis or the y-axis of the original image, the matrix of the predetermined number of pixels is calculated based on the total luminance value. A shifter or a look-up table for calculating an average luminance value, wherein a pipeline profile is generated based on the average luminance value of pixels on a line parallel to the x-axis or the y-axis. Processing equipment. 4. The pipeline image processing apparatus according to claim 1, further comprising a multiplier for multiplying a luminance of each pixel output from the output gate by a predetermined value. Image processing device. 5. The pipeline image processing apparatus according to claim 1, wherein the y-coordinate value counter is a preset type subtraction counter, and the number of gradations of the luminance of the original image is preset before the luminance profile is generated. A pipeline image processing apparatus, characterized in that: 6. A pixel array on a line parallel to the x-axis for which a luminance profile is to be created from a memory for storing a digital original image via an output gate is output by the number of gradations of the luminance of the original image. A first process for generating an intermediate image by arranging the intermediate image in parallel with the axis; and a y-coordinate value counter and a comparator for calculating the luminance of the pixel and the y-coordinate value for each pixel indicated by the x-axis and the y-axis of the intermediate image. Performing a second process of comparing and extracting a pixel whose luminance and y-coordinate value coincide with each other, and generating a luminance profile by using a pixel whose luminance and y-coordinate value coincide with each other. . 7. A pixel array on a line parallel to the y-axis, for which a luminance profile is to be created, is output from a memory for storing a digital original image through an output gate by the number of gradations of the luminance of the original image. A first process of arranging an intermediate image by arranging the intermediate image in parallel with the axis; and an x-coordinate value counter and a comparator for calculating the luminance and x-coordinate value of the pixel for each pixel indicated by the x-axis and the y-axis of the intermediate image. Performing a second process of comparing and extracting a pixel having the same luminance and x-coordinate value, and generating a luminance profile by using the pixels having the same luminance and x-coordinate value. . 8. The pipeline image processing method according to claim 6 or 7, wherein the matrix calculator calculates the upper and lower pixels and the lower and upper pixels for each pixel on a line parallel to the x-axis or the y-axis of the original image. And / or a third process of calculating a total value of luminance of a predetermined number of pixels existing on the left and right, and a shifter or a lookup table, for each pixel on a line parallel to the x-axis or the y-axis of the original image,
Performing a fourth process of calculating the average brightness value of the predetermined number of pixels based on the total brightness value, before performing the first process and the second process, and performing the x-axis or y-axis A pipeline image processing method, wherein a luminance profile is generated based on the luminance average value of pixels on a parallel line. 9. The pipeline image processing method according to claim 6, wherein a luminance of each pixel output from said output gate is multiplied by a predetermined value by a multiplier. Processing method. 10. The pipeline image processing method according to claim 6, wherein the y-coordinate value counter is a preset type subtraction counter, and the number of gradations of the luminance of the original image is preset before the luminance profile is generated. A pipeline image processing method.