# US 11,308,867 B2 · Image processing method, image processing device, display device and storage medium

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- Number: US 11,308,867 B2
- Document ID: US11308867B2
- Status: Granted
- Kind: B2
- Application number: 16/623,703
- Filed: 2019-03-28
- Published: 2020-05-07
- Granted: 2022-04-19
- Earliest claimed: 2018-04-10
- Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Applicants: Hefei Xinsheng Optoelectronics Technology Co., Ltd.; Boe Technology Group Co., Ltd.
- Inventors: Xiaolong Wei
- Web page: https://patentgrep.com/patent/US11308867B2

## CPC

- G09G 3/2092: {Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto (suitable for both CRT and flat panel G09G5/003; specific for a CRT G09G1/165)}
- G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED]
- G09G 5/10: Intensity circuits
- G09G 2320/0257: Reduction of after-image effects
- G09G 2320/0261: in the context of movement of objects on the screen or movement of the observer relative to the screen
- G09G 2320/0626: for control of overall brightness
- G09G 2320/103: Detection of image changes, e.g. determination of an index representative of the image change
- G09G 2340/0464: Positioning
- G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data
- G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00)

## Abstract

A method for processing a display image in an image display region, a display image processing device, a display device, and a storage medium are disclosed. A part of the image display region or all of the image display region is a movable region, and the method for processing the display image includes: in a case where the movable region is moved from a first position to a second position, obtaining a first image feature value of the display image displayed in the image display region where the movable region is at the first position; obtaining a second image feature value of the display image displayed in the image display region where the movable region is at the second position; and determining whether the display image displayed in the image display region is a static image based on the first image feature value and the second image feature value.

## Claims

### Claim 1

A method for processing a display image in an image display region, wherein a part of the image display region or all of the image display region is a movable region, and the method for processing the display image comprises:
in a case where the movable region is moved from a first position to a second position,
obtaining a first image feature value of the display image displayed in the image display region where the movable region is at the first position;
obtaining a second image feature value of the display image displayed in the image display region where the movable region is at the second position; and
determining whether the display image displayed in the image display region is a static image based on the first image feature value and the second image feature value,
the first image feature value and the second image feature value are brightness value of the display image displayed in the image display region,
wherein the method for processing the display image further comprises:
setting a threshold parameter;
wherein the determining whether the display image displayed in the image display region is a static image based on the first image feature value and the second image feature value, comprises:
calculating an absolute value of a difference between the first image feature value and the second image feature value;
determining the display image displayed in the image display region as a non-static image in a case where the absolute value of the difference is greater than the threshold parameter; and
determining the display image displayed in the image display region as a static image in a case where the absolute value of the difference is less than or equal to the threshold parameter;
wherein the movable region is moved from the first position to the second position, comprises:
allowing the movable region to move M pixel steps from the first position along a first direction; and
wherein in a case where a maximum step size of the movable region moving along the first direction is n rows or n columns of pixels,
the threshold parameter is a product of the maximum step size and an average image feature value of each row or column of pixels in the image display region, and
M is an integer greater than zero, n is an integer greater than zero.

### Claim 2 (depends on 1)

The method for processing the display image according to claim 1, wherein the determining whether the display image displayed in the image display region is a static image based on the first image feature value and the second image feature value, comprises:
determining whether the first image feature value and the second image feature value are equal; and
determining the display image displayed in the image display region as a static image in a case where the first image feature value and the second image feature value are equal.

### Claim 3 (depends on 1)

The method for processing the display image according to claim 1, comprising at least two movement cycles,
wherein an (N)th movement cycle and an (N+1)th movement cycle respectively comprise X frames of display images in a one-to-one corresponding way;
a position of an image display region where an (x)th frame display image is located in the (N+1)th movement cycle is identical to a position of an image display region where an (x)th frame display image is located in the (N)th movement cycle; and
x is an integer greater than zero and less than or equal to X, N is an integer greater than zero, and X is an integer greater than zero.

### Claim 4 (depends on 3)

The method for processing the display image according to claim 3,
wherein the first image feature value is an image feature value of the display image in each frame in the (N)th movement cycle; and
the second image feature value is an image feature value of the display image in each frame in the (N+1)th movement cycle.

### Claim 5 (depends on 4)

The method for processing the display image according to claim 4, wherein the determining whether the display image displayed in the image display region is a static image based on the first image feature value and the second image feature value, comprises:
determining whether the image feature value of the display image in each frame in the (N)th movement cycle is in one-to-one correspondence with and equal to the image feature value of the display image in each frame in the (N+1)th movement cycle;
in a case where the image feature value of the display image in each frame in the (N)th movement cycle is in one-to-one correspondence with and equal to the image feature value of the display image in each frame in the (N+1)th movement cycle, determining the display image displayed in the image display region as a static image; and
in a case where the image feature value of the display image in each frame in the (N)th movement cycle is not in one-to-one correspondence with or equal to the image feature value of the display image in each frame in the (N+1)th movement cycle, determining the display image displayed in the image display region as a non-static image.

### Claim 6 (depends on 3)

The method for processing the display image according to claim 3, wherein the movement cycle is time taken for the movable region to move from the first position and then back to the first position.

### Claim 7 (depends on 1)

The method for processing the display image according to claim 1, wherein the image display region is a portion, which is not removed from a display screen during image rotation, of the movable region.

### Claim 8 (depends on 1)

The method for processing the display image according to claim 1, further comprising:
reducing display brightness of the image display region in a case where the display image is determined as the static image.

### Claim 9 (depends on 1)

A display image processing device, comprising:
a processor; and
a memory,
wherein the memory is stored with instructions which are executed by the processor to implement the method according to claim 1, for processing the display image.

### Claim 10 (depends on 9)

A display device, comprising the display image processing device according to claim 9.

### Claim 11 (depends on 1)

A storage medium, for storing non-volatile computer readable instructions, wherein the non-volatile computer readable instructions are executed by a computer to implement the method according to claim 1, for processing the display image.