JP2003177726A - Image processing system and program, and information storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image processing system which prevents erroneous detection of noise when correcting gradation for a liquid crystal display and prevents motion unsharpness appropriately, and to provide an image processing program and an information storage medium for the same. <P>SOLUTION: An image processing part is provided with a motion detecting part 20 which grasps the motion of a plurality of predetermined pixels constituting an image, a motion operation part 40 which determines the variance of the motion vector of a target pixel on the basis of information indicating the motion of the target pixel grasped by the motion detecting part 20, a judging part 60 which judges whether the variance determined by the motion arithmetic operation part 40 is a predetermined value or less, and a tone correction part 70 which corrects the gradation by using corrected gradation characteristic information when the judgment processing result is true. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing system, a program, an information storage medium, and an image processing method used for gradation correction processing when liquid crystal display is performed.

[0002]

BACKGROUND OF THE INVENTION Generally, the response time of a liquid crystal when displaying a liquid crystal is 1
It is slower than the frame time (16.7 ms). In particular, the response is slow in gradations where the voltage applied to the liquid crystal is low (for example, in the case of a so-called normally white display system, halftones close to white).

Therefore, when a moving image is displayed, the contrast of the image may be deteriorated or an afterimage (motion blur) may be perceived.

To address such a problem, for example, in Japanese Patent Laid-Open No. 9-281943, the user is allowed to select a moving image or a still image, or a still image or a moving image is discriminated from a video signal to determine the luminance for the moving image. There has been proposed a method of switching between characteristic data and still image luminance characteristic data.

However, in general, moving images and still images are often mixed in a series of moving images, or only a part of the image is a moving image and the remaining part is a still image. For this reason, it is difficult for the user to determine where the moving image is and which is the still image, and a method for allowing the user to select is not realistic.

Further, Japanese Patent Application Laid-Open No. 9-281943 does not disclose a specific method for discriminating whether a still image or a moving image from a video signal. Even when discriminating from a video signal, what is a moving image and from which part is a moving image. It is difficult to determine if is a still image.

Further, Japanese Patent No. 2650479 proposes a method of increasing the voltage difference between fields to increase the response speed of liquid crystal when there is a difference in voltage applied to pixels between fields. In such a method, if the noise is present, the noise is further increased.

The present invention has been made in view of the above problems, and an object thereof is to prevent erroneous detection of noise and appropriately prevent motion blur when performing gradation correction for liquid crystal display. It is to provide a possible image processing system, program, and information storage medium.

[0009]

In order to solve the above-mentioned problems, an image processing system according to the present invention is an image processing system for processing an image for liquid crystal display, in which the movement of a plurality of predetermined pixels constituting the image is controlled. A movement grasping means to grasp,
Based on the information indicating the movements of the plurality of pixels grasped by the movement grasping means, a judging means for judging whether or not the entire image is in a panning state in which the whole image is moving, and the judging means judges that the panning state is in effect. In this case, a gradation correction unit that performs gradation correction using the gradation characteristic information that is corrected so that the voltage of the portion where the liquid crystal drive voltage is low becomes high is included.

Further, the program according to the present invention is a program for processing an image for liquid crystal display, which causes a computer to recognize a movement of a plurality of predetermined pixels forming an image, and a movement grasping means. Based on the information indicating the movement of the plurality of pixels grasped by the grasping means, a determining means for determining whether or not the entire image is in a panning state in which the entire image is moving, and a case in which the determining means determines that the panning state is set. It is characterized in that it functions as a gradation correction means for performing gradation correction using gradation characteristic information corrected so that the voltage of the portion where the liquid crystal drive voltage is low becomes high.

The information storage medium according to the present invention is a computer-readable information storage medium,
A program for causing a computer to function as the above means is stored.

According to the present invention, gradation correction is performed using gradation characteristic information that is corrected so that the voltage of a portion where the liquid crystal drive voltage is low becomes high only when the entire image is in the panning state. Therefore, it is possible to prevent a change in a still image due to noise from being erroneously determined to be a moving image, and it is possible to appropriately prevent reduction in contrast and blurring of motion.

The gradation correcting means corrects the gradation using the default (initial state) gradation characteristic information when the judging means judges that the panning state is not established.

The image processing system according to the present invention is
In an image processing system for processing an image for liquid crystal display, a motion grasping means for grasping movements of a plurality of predetermined pixels forming an image, and information indicating movements of the plurality of pixels grasped by the movement grasping means. Based on the determination means for determining whether or not the entire image is in the panning state in which the entire image is moving, and if the determination means determines that the panning state is in effect, the level corrected so as to emphasize the gradation change between adjacent frames Gradation correction means for performing gradation correction using tone characteristic information.

Further, the program according to the present invention is a program for processing an image for liquid crystal display, and the computer uses a movement grasping means for grasping movements of a plurality of predetermined pixels forming the image, and the movement. Based on the information indicating the movement of the plurality of pixels grasped by the grasping means, a determining means for determining whether or not the entire image is in a panning state in which the entire image is moving, and a case in which the determining means determines that the panning state is set. It is characterized in that it functions as a gradation correction unit that performs gradation correction using gradation characteristic information corrected so as to emphasize gradation changes between adjacent frames.

Further, the information storage medium according to the present invention is a computer-readable information storage medium,
A program for causing a computer to function as the above means is stored.

According to the present invention, gradation correction is performed using gradation characteristic information corrected so as to emphasize the gradation change between adjacent frames only when the entire image is in the panning state in which the image is moving. It is possible to prevent a change in a still image due to noise from being mistakenly determined to be a moving image, and
It is possible to appropriately prevent the deterioration of the contrast and the blurring of the movement.

Further, the image processing system includes motion calculating means for calculating a variance value of motion vectors of the plurality of pixels, and the judging means determines whether the variance value calculated by the motion calculating means is less than a predetermined value. First to judge
It may be determined that the panning state is set when the first determination processing result is true.

Further, the program and the information storage medium cause a computer to function as motion calculating means for calculating a variance value of the motion vectors of the plurality of pixels, and the determining means determines the motion calculating means. A first determination process for determining whether the variance value is less than a predetermined value may be performed, and if the first determination process result is true, it may be determined that the panning state.

According to this, the panning state can be detected more accurately by determining the panning state when the dispersion of the motion vector is small, that is, when most of the pixels are moving in the same direction. .

Further, the image processing system includes a brightness detecting means for detecting brightness values of neighboring pixels of the plurality of pixels,
Brightness determining means for determining, for each of the plurality of pixels, an average value and a variance value of the brightness values of neighboring pixels detected by the brightness detecting means, and the determining means determines the brightness calculated by the brightness calculating means. A second determination process is performed to determine whether the average value of the brightness values of each of the plurality of pixels is less than a predetermined value and the variance of the brightness values of each of the plurality of pixels is equal to or more than a predetermined value, and the first determination is performed. If the processing result is true and the second determination processing result is true, it is determined to be in the panning state, and if the first determination processing result is false, or the first determination processing result is false. When the result of the determination process of 2 is false, it may be determined that the panning state is not set.

Further, the program and the information storage medium use a computer to detect a luminance value of a neighboring pixel of the plurality of pixels, and an average of the luminance values of the neighboring pixels detected by the luminance detecting means. The value and the variance value are caused to function as brightness calculation means for each of the plurality of pixels, and the determination means is such that the average value of the brightness values for each of the plurality of pixels calculated by the brightness calculation means is less than a predetermined value, and , Performing a second determination process of determining whether the variance value of the brightness values of each of the plurality of pixels is equal to or more than a predetermined value,
When the first determination processing result is true and the second determination processing result is true, it is determined to be in the panning state, and the first determination processing result is false. Alternatively, when the result of the second determination process is false, it may be determined that the panning state is not set.

According to this, when the average value of the luminance values of the pixels around a predetermined plurality of pixels is large and the variance value is small, it is possible to perform the process without correcting the gradation characteristic information. This makes it possible to prevent the gradation characteristic information from being erroneously corrected even when there is no motion in an image in which the luminance of which the detection accuracy of the motion vector is lowered is uniform.

Further, in the image processing system, the program, and the information storage medium, the motion grasping means forms one image, and a frame forming each area among a plurality of areas having the same number of pixels. Calculate the number of pixels whose difference value of the brightness value of the pixels between is a predetermined value or more, calculate the ratio of the number of pixels to the total number of pixels forming the area, and calculate the number of areas where the ratio is a predetermined value or more. The determining unit may determine that the panning state is set when the ratio of the number of regions to the total number of regions forming one image is equal to or more than a predetermined value.

According to this, it is possible to detect whether it is in the panning state or not by a simpler method.

The motion calculation means is configured to obtain a value indicating a motion amount of the plurality of pixels and a value indicating a movement direction of the plurality of pixels, which are grasped by the movement grasping means, and The determination means performs a first determination process of determining whether or not the difference between the values indicating the movement amounts of the plurality of pixels and the difference between the values indicating the movement directions of the plurality of target pixels are within a predetermined range. It may be configured to do so.

According to this, when the direction and magnitude of movement of a plurality of pixels are almost the same, the gradation characteristic information is corrected so that a plurality of pixels constituting the image move uniformly. It is possible to correct the gradation characteristic information only when there is.

By correcting the gradation characteristic information only when a plurality of pixels are moving uniformly, it is possible to prevent a situation where the boundary between the moving region and the non-moving region becomes unnatural. Therefore, the motion blur can be appropriately prevented.

[0029]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described below with reference to the drawings, taking a case where the present invention is applied to an image processing system using a liquid crystal projector as an example. The embodiments described below do not limit the content of the invention described in the claims. Further, not all of the configurations shown in the following embodiments are indispensable as means for solving the invention described in the claims.

(Description of Entire System) In the case where the gradation correction is performed using the gradation characteristic information, an image when the present invention is applied to the image processing unit of the liquid crystal projector in order to appropriately prevent the motion blur. The functional blocks of the processing unit will be described.

FIG. 1 is a functional block diagram of an image processing unit in a liquid crystal projector according to an example of this embodiment.

The image processing unit includes an image data input unit 10 for inputting image data for one frame, and a motion detecting unit functioning as a motion grasping unit for grasping movements of a predetermined plurality of target pixels in the input image data. 20 and a motion calculation unit 40 that obtains the variance value of the motion vector of the target pixel based on the information indicating the motion of the target pixel that is grasped by the motion detection unit 20.

Further, the image processing unit is the image data input unit 1
Based on the image data from 0, the brightness detection unit 30 that detects the brightness of the neighboring pixels of the target pixel, and the average value and the variance value of the brightness of the neighboring pixels detected by the brightness detection unit 30 are
A luminance calculation unit 50 that obtains each of a plurality of predetermined pixels that form an image is included.

Further, the image processing unit determines a first determination process for determining whether the variance value calculated by the motion calculation unit 40 is less than a predetermined value and the average value of the brightness calculated by the brightness calculation unit 50 is a predetermined value. A determination unit 60 that performs a second determination process that determines whether the variance value that is less than the value and that is calculated by the brightness calculation unit 50 is equal to or greater than a predetermined value, and the first and second determination process results by the determination unit 60. When true, a gradation correction unit 70 that performs gradation correction using gradation characteristic information that is corrected so that the voltage of a portion where the liquid crystal drive voltage is low becomes high, and gradation correction is performed based on the gradation characteristic information. And an image data output unit 80 that outputs the image data.

As described above, when the variance value of the motion vector of the target pixel is small, the gradation correction is performed using the gradation characteristic information corrected so that the voltage of the portion where the liquid crystal drive voltage is low becomes high, so that the panning is performed. The response speed of the liquid crystal can be increased only in the state, that is, in the state where the plurality of pixels forming the image are moving uniformly.

As described above, the gradation correction is performed using the gradation characteristic information that is corrected so as to increase the response speed of the liquid crystal only when the plurality of pixels are moving uniformly. Since it is possible to prevent the gradation characteristic information from being corrected by misjudging an image as a moving image, it is possible to appropriately prevent motion blur.

Further, when the average value of the luminance around the target pixel is large and the dispersion value is small, the gradation correction is performed by using the normal gradation characteristic information without correcting the gradation characteristic information. . As a result, it is possible to prevent gradation correction using the gradation characteristic information that has been erroneously corrected, even when there is no motion, in an image with uniform brightness where the detection accuracy of the motion vector is reduced. .

Here, the above-mentioned target pixel will be described.

FIG. 2 is a schematic diagram showing target pixels in an image.

For example, as shown in FIG. 2, 12 target pixels are set uniformly in one image.

The motion detecting section 20 detects the motion vectors of these 12 target pixels in the x and y directions.
As a motion vector detection method, for example, a block pattern matching method or the like can be used.

The brightness detecting section 30 detects the average brightness of the target pixel and its surroundings.

(Explanation of Processing Flow) Next, the flow of image processing using the above-mentioned respective parts will be explained.

FIG. 3 is a flowchart showing the flow of image processing according to an example of this embodiment.

First, the image data input unit 10 inputs image data for one frame. Then, the motion detector 20
Is based on the image data from the image data input unit 10,
The x-direction and y-direction motion vectors of the plurality of target pixels shown in FIG. 2 are detected (step S2).

The brightness detecting section 30 detects the average brightness of the target pixel and its neighboring pixels based on the image data from the image data input section 10 (step S4).

Then, the motion calculating section 40 has the motion detecting section 2
The variance value of the motion vector in the x direction and the motion vector in the y direction obtained by 0 is calculated. Further, the brightness calculation section 50 calculates the variance value of the average brightness calculated by the image data input section 10.

Then, the judgment unit 60 judges whether the variance value of the motion vector in the x direction is small (whether it is less than a predetermined value) based on the calculation result of the motion calculation unit 40 (step S6), It is determined whether the variance value of the motion vector is small (is less than a predetermined value) (step S
8), the first determination process is performed.

When the result of the first determination processing is true, the determination unit 60 further determines whether the average brightness value by the brightness calculation unit 50 is small (less than a predetermined value) and the variance value is large (greater than or equal to a predetermined value). ) It is determined whether the second determination process is performed (step S10).

When the result of the second determination processing is also true, the gradation correction unit 70 corrects the default gradation characteristic information so that the voltage of the portion where the liquid crystal drive voltage is low becomes high, and the gradation characteristic information concerned is corrected. Is applied (step S12).

Here, the correction of the gradation characteristic information will be described.

FIG. 4 is a schematic diagram showing changes in gradation characteristics before and after correction according to an example of the present embodiment.

In FIG. 4, the horizontal axis represents the input gradation, the vertical axis represents the output gradation, the thick broken line represents the gradation characteristic before correction,
The thick solid line shows the gradation characteristics after correction.

As shown in FIG. 4, in the case where the liquid crystal projector is a normally white system, that is, a system in which white is displayed when no drive voltage is applied to the liquid crystal, the drive voltage is close to 0 when displaying white. , When displaying black,
The driving voltage is close to the maximum value.

Therefore, when displaying a color close to black with a high drive voltage, the response speed of the liquid crystal is fast, but when displaying a color close to white with a low drive voltage, the response speed of the liquid crystal is slow. Therefore, when displaying a moving image, the contrast is lowered or motion blur is perceived.

Therefore, as shown by the solid line in FIG. 4, by sharpening the gradation characteristics in the white region, the driving voltage in the white region can be increased and the response speed of the liquid crystal in the white region can be increased.

As described above, the gradation correction unit 70 corrects the default gradation characteristic information as shown in FIG. 4 so that the voltage of the portion where the liquid crystal drive voltage is low becomes high, and uses the gradation characteristic information. By performing the gradation correction by the gradation correction, the response speed of the liquid crystal in the white region can be increased.

It should be noted that it is determined whether the variance value of the motion vector in the x direction is small (step S6) and the variance value of the motion vector in the y direction is small (step S6).
8) If the average brightness value is small and the result of the determination as to whether the variance value is large (step S10) is false, the gradation correction unit 70 sets the default gradation characteristic information. Apply.

Then, the gradation correction unit 70 performs gradation correction using the applied gradation characteristic information (step S14).

Then, the image data output section 80 outputs the image data after the gradation correction by the gradation correction section 70. As a result, the liquid crystal projector projects and displays an image only in the panning state based on the corrected gradation characteristics shown by the solid line in FIG.

As described above, according to the present embodiment, the gradation characteristic information corrected so that the voltage of the portion where the liquid crystal drive voltage is low becomes high only when the entire image is in the panning state in which the image is moving is used. By gradation correction, it is possible to prevent a change in a still image due to noise from being erroneously determined to be a moving image, and it is possible to appropriately prevent reduction in contrast and blurring of motion.

Furthermore, when the average value of the luminance around the target pixel is large and the variance value is small, the gradation correction is performed without correcting the gradation characteristic information. This makes it possible to prevent the gradation characteristic information from being erroneously corrected even when there is no motion in an image in which the luminance of which the detection accuracy of the motion vector is lowered is uniform. (Description of Hardware) Next, a block diagram of hardware of an image processing unit in the liquid crystal projector will be described.

FIG. 5 is a block diagram of hardware of an image processing unit in the liquid crystal projector according to the example of the present embodiment.

In the apparatus shown in FIG. 5, the CPU 1000, R
OM1002, RAM1004, information storage medium 100
6, image generation IC 1010, I / O (input / output port) 1
020 is connected by a system bus 1016 so that data can be transmitted and received between them. Then, it is connected to a device such as a PC via the I / O 1020.

The functions of the image data input unit 10 and the image data output unit 80 shown in FIG.
Can be implemented by using the motion detection unit 20, the brightness detection unit 30,
The functions of the motion calculation unit 40, the brightness calculation unit 50, the determination unit 60, and the gradation correction unit 70 can be realized using, for example, the CPU 1000, the image generation IC 1010, and the RAM 1004.

It should be noted that the program stored in the information storage medium 1006 can be read by a computer in the liquid crystal projector to realize the functions of the motion detecting section 20, the determining section 60 and the like.

The information storage medium 1006 is, for example, a CD-ROM, a DVD-ROM, a ROM or a RAM.
Etc. can be applied, and the reading method of the program may be a contact method or a non-contact method.

Further, it is also possible to realize each function described above in a computer by downloading a program for realizing each function described above from a host device or the like via a transmission path.

(Explanation of Modifications) The application of the present invention is not limited to the above-mentioned embodiments, but can be applied to various modifications.

For example, as the correction of the gradation characteristic, various methods other than the method of making the white region steep as shown in FIG. 4 can be adopted.

FIG. 6 is a schematic diagram showing changes in gradation characteristics before and after correction according to another example of the present embodiment.

In FIG. 6, the horizontal axis represents the input gradation, the vertical axis represents the output gradation, the thick broken line represents the gradation characteristic before correction,
The thick solid line shows the gradation characteristics after correction.

For example, as shown in FIG. 6, in the normally white display system, the maximum value of the input gradation, that is, the drive voltage of the white portion may be lowered.

As described above, by lowering the white peak level, it is not necessary to use the region where the liquid crystal drive voltage is close to 0, so that the response speed of the liquid crystal can be improved.

In the case of the normally black display system, the gradation characteristic of the black side area may be made steep and the black peak level may be lowered.

Further, the gradation correction unit 70 may be configured to perform gradation correction using the gradation characteristic information corrected so as to emphasize the gradation change between adjacent frames in the panning state.

Even with such a method, it is possible to prevent a change in a part of a still image due to noise from being erroneously determined to be a moving image, and it is possible to appropriately prevent reduction in contrast and blurring of motion.

As the detection of the panning state, various methods other than the method of detecting based on the motion vector of the target pixel shown in FIG. 2 can be adopted.

FIG. 7 is a schematic diagram showing a set area in an image.

For example, as shown in FIG. 7, one image is A0
The motion calculation section 40 is divided into 12 areas from A11 to A11.
Is configured to obtain the number of pixels of which the inter-frame luminance difference value is equal to or more than a predetermined value among the pixels configuring each area.

Further, the motion calculating section 40 is constructed so as to obtain the number of areas in which the number of pixels concerned is a predetermined value or more, and the determining section 60
When the number of areas is equal to or larger than a predetermined value, it is determined to be in the panning state.

Even with such a simple method, the panning state can be detected as in the method shown in FIG.

Although the number of target pixels and regions is 12 in FIGS. 2 and 7, the number may be 11 or less or 13 or more. 2 and FIG.
Then, although the target pixels and regions are evenly arranged, they are not necessarily equal.

Further, for example, instead of the motion detecting section 20 and the motion calculating section 40 using the above-described motion vector, a motion grasping section for grasping the movement of the target pixel and a motion amount of the target pixel grasped by the motion grasping section. And a motion calculation unit that obtains a value indicating the movement direction of the plurality of pixels, and the determination unit 60 replaces the first determination process described above with a value indicating the amount of movement of a plurality of target pixels. And a difference in the values indicating the movement directions of the plurality of target pixels are within a predetermined range.

Further, the above-mentioned motion detecting section 20 detects the motion vectors of the plurality of target pixels shown in FIG. 2 in the x and y directions based on the image data from the image data input section 10. , X-direction (horizontal direction of image) or only y-direction (vertical direction of image) may be detected.

The above-described second determination process is not essential, and only the first determination process may be performed.

The image processing section described above can be applied to various liquid crystal display devices other than the liquid crystal projector.

The function of the image processing unit of the liquid crystal projector described above may be realized by a single image display device (for example, a liquid crystal projector), or may be dispersed by a plurality of processing devices (for example, by a liquid crystal projector). PC (Personal Com
distributed processing) with puter).

[Brief description of drawings]

FIG. 1 is a functional block diagram of an image processing unit in a liquid crystal projector according to an example of the present embodiment.

FIG. 2 is a schematic diagram showing target pixels in an image.

FIG. 3 is a flowchart showing a flow of image processing according to an example of the present embodiment.

FIG. 4 is a schematic diagram showing changes in gradation characteristics before and after correction according to an example of the present embodiment.

FIG. 5 is a block diagram of hardware of an image processing unit in the liquid crystal projector according to the example of the present embodiment.

FIG. 6 is a schematic diagram showing changes in gradation characteristics before and after correction according to another example of the present embodiment.

FIG. 7 is a schematic diagram showing a setting area in an image.

[Explanation of symbols]

20 Motion detector 30 Luminance detector 40 Motion calculator 50 Luminance calculator 60 Judgment section 70 gradation correction unit 1006 information storage medium

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09G 3/20 612 G09G 3/20 612U 5L096 641 641C 641R 660 660W H04N 5/66 102 H04N 5/66 102B F Term (reference) 2H093 NA51 NA58 NC52 NC62 ND06 ND17 ND41 5B057 AA01 CA08 CA16 CB08 CB16 CE11 CH01 DA16 DB09 DC22 DC32 5C006 AA01 AA16 AF19 AF45 AF46 AF51 AF53 FA14 FA34 FA56 JJ0808 JJ0807 JJ08 JJA07 JJ10 A07 BB10 A07 BB10 A07 BB10 BB10 A07 BB10 A07 BB10 A07 BB19 A07 BB10 A07 BB10 A07 BB10 A07 BB19 A07 BB19 A07 BB10 A08 5L096 BA20 DA01 FA14 FA32 FA33 GA08 HA04 LA05 MA03

Claims (11)

[Claims] 1. In an image processing system for processing an image for liquid crystal display, a movement grasping means for grasping movements of a predetermined plurality of pixels forming the image, and a plurality of pixels of the plurality of pixels grasped by the movement grasping means. Based on the information indicating the movement, the judgment means for judging whether or not the entire image is in the panning state in which the whole image is moving, and when the judgment means judges that the panning state is set, the voltage of the portion where the liquid crystal drive voltage is low is high An image processing system, comprising: a gradation correction unit that performs gradation correction using the gradation characteristic information corrected so that 2. In an image processing system for processing an image for liquid crystal display, a movement grasping means for grasping movements of a plurality of predetermined pixels forming the image, and a plurality of pixels of the plurality of pixels grasped by the movement grasping means. Judgment means for judging whether or not the entire image is in the panning state in which the whole image is moving based on the information indicating the movement, and when the judgment means judges that the panning state is in effect, the gradation change between adjacent frames is emphasized. An image processing system comprising: a gradation correction unit that performs gradation correction using the gradation characteristic information corrected as described above. 3. The motion calculation unit according to claim 1, further comprising: a motion calculation unit that calculates a variance value of motion vectors of the plurality of pixels, wherein the determination unit determines that the variance value calculated by the motion calculation unit. An image processing system, wherein a first determination process is performed to determine whether the value is less than a predetermined value, and when the first determination process result is true, the panning state is determined. 4. The brightness detecting means for detecting brightness values of neighboring pixels of the plurality of pixels, and the average value and variance value of the brightness values of the neighboring pixels detected by the brightness detecting means, A luminance calculation unit that obtains each of a plurality of pixels, wherein the determination unit has an average value of the luminance values of the plurality of pixels that is obtained by the luminance calculation unit is less than a predetermined value, and A second determination process is performed to determine whether the variance value of the luminance value of is greater than or equal to a predetermined value, and the first determination process result is true and the second determination process result is true. Determines that it is in the panning state, and if the first determination processing result is false, or if the second determination processing result is false, it is determined that the panning state is not. Featuring Image processing system. 5. The motion grasping means according to claim 1, wherein among the plurality of regions forming one image and having the same number of pixels, the motion grasping unit detects pixels between frames forming each region. A means for calculating the number of pixels having a difference value of the brightness value of a predetermined value or more, calculating the ratio of the pixel number to the total number of pixels forming the region, and calculating the number of regions having the ratio of the predetermined value or more The image processing system, wherein the determination unit determines that the panning state is set when the ratio of the number of regions to the total number of regions forming one image is a predetermined value or more. 6. A program for processing an image for liquid crystal display, comprising: a motion grasping means for grasping the movement of a plurality of predetermined pixels forming an image, and the computer grasped by the motion grasping means. Based on the information indicating the movements of a plurality of pixels, a determining unit that determines whether or not the entire image is in a panning state, and if the determining unit determines that the image is in a panning state, a portion where the liquid crystal drive voltage is low A program that functions as a gradation correction unit that performs gradation correction using gradation characteristic information that has been corrected so as to increase the voltage. 7. A program for processing an image for liquid crystal display, comprising a motion grasping means for grasping the movement of a plurality of predetermined pixels forming the image, and the computer grasped by the motion grasping means. Based on the information indicating the movement of a plurality of pixels, a determination unit that determines whether or not the entire image is in the panning state, and if the determination unit determines that the panning state is present, the gradation between adjacent frames A program that functions as a gradation correction unit that performs gradation correction using gradation characteristic information corrected so as to emphasize changes. 8. The computer according to claim 6, wherein the computer is caused to function as a motion calculation unit that calculates a variance value of motion vectors of the plurality of pixels, and the determination unit is calculated by the motion calculation unit. A program for performing a first determination process for determining whether the variance value is less than a predetermined value, and determining the panning state when the result of the first determination process is true. 9. The brightness detection means for detecting brightness values of neighboring pixels of the plurality of pixels according to claim 8, and an average value and a variance value of brightness values of neighboring pixels detected by the brightness detection means. A function of brightness calculation means for each of the plurality of pixels, wherein the determination means is such that the average value of the brightness values of the plurality of pixels calculated by the brightness calculation means is less than a predetermined value, and A second determination process is performed to determine whether or not the variance value of the brightness value for each pixel is equal to or greater than a predetermined value, the first determination process result is true, and the second determination process result is true. In this case, it is determined that the panning state is set, and when the first determination processing result is false or the second determination processing result is false, it is determined that the panning state is not set. You A program characterized by 10. The motion grasping means according to claim 6, wherein among the plurality of regions forming one image and having an equal number of pixels, the motion grasping unit detects pixels between frames forming each region. A means for calculating the number of pixels having a difference value of the brightness value of a predetermined value or more, calculating the ratio of the pixel number to the total number of pixels forming the region, and calculating the number of regions having the ratio of the predetermined value or more The program, wherein the determining means determines that the panning state is set when the ratio of the number of regions to the total number of regions forming one image is a predetermined value or more. 11. An information storage medium readable by a computer, wherein the program according to any one of claims 6 to 10 is stored.