# US 10,123,024 B2 · Image processing methods and image processing apparatuses

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- Number: US 10,123,024 B2
- Document ID: US10123024B2
- Status: Granted
- Kind: B2
- Application number: 15/304,514
- Filed: 2015-03-12
- Published: 2017-02-09
- Granted: 2018-11-06
- Earliest claimed: 2014-04-18
- Assignees: Beijing Zhigu Rui Tuo Tech Co., Ltd
- Applicants: Beijing Zhigu Rui Tuo Tech Co., Ltd
- Inventors: Lin Du; Dayong Ding
- Web page: https://patentgrep.com/patent/US10123024B2

## CPC

- H04N 19/17: the unit being an image region, e.g. an object
- H04N 19/132: Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
- H04N 19/162: User input
- H04N 19/167: Position within a video image, e.g. region of interest [ROI]
- H04N 19/59: involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

Image processing methods and image processing apparatuses are provided. The image processing method comprises: determining at least one region of interest in an image; determining a parameter of interest of pixels in the image at least according to distribution of the at least one region of interest in the image; determining target positions of the pixels according to the parameter of interest of the pixels and a reduction ratio; and obtaining, according to the target positions of the pixels, a reduced image corresponding to the image. A proportion occupied by pixels of each region in a reduced image after compression is determined according to a degree of interest of a user in each region in an image, to cause a region appreciated by the user to be presented with high quality during restoration, and facilitate image processing after compression.

## Claims

### Claim 1

A method, comprising:
determining, by a system comprising a processor, at least one region of interest in an image;
determining parameters of interest for pixels within the image at least according to a distribution of the at least one region of interest in the image;
determining target positions for the pixels according to the parameters of interest for the pixels and a reduction ratio; and
generating, according to the target positions of the pixels, a reduced image corresponding to the image.

### Claim 2 (depends on 1)

The method of claim 1, wherein the determining the parameters of interest for the pixels within the image at least according to the distribution of the at least one region of interest in the image comprises:
determining the parameters of interest for the pixels according to the distribution of the at least one region of interest in the image and distribution information of the pixels in the image.

### Claim 3 (depends on 2)

The method of claim 2, wherein the distribution information of the pixels in the image comprises:
first position information of the pixels relative to the at least one region of interest.

### Claim 4 (depends on 2)

The method of claim 2, wherein the distribution information of the pixels in the image comprises:
second position information of the pixels relative to the boundary of the image.

### Claim 5 (depends on 1)

The method of claim 1, wherein the determining the target positions for the pixels according to the parameters of interest for the pixels and the reduction ratio comprises:
obtaining a first change trend parameter of the parameter of interest of the pixels according to the parameter of interest of the pixels.

### Claim 6 (depends on 5)

The method of claim 5, wherein the determining the target positions for the pixels according to the parameters of interest for the pixels and the reduction ratio comprises:
determining a first movement direction and a first movement amplitude of the pixels according to the first change trend parameter.

### Claim 7 (depends on 6)

The method of claim 6, wherein the determining the target positions for the pixels according to the parameters of interest for the pixels and the reduction ratio comprises:
determining a second movement direction and a second movement amplitude of the pixels according to the reduction ratio.

### Claim 8 (depends on 1)

The method of claim 1, further comprising:
determining the reduction ratio.

### Claim 9 (depends on 8)

The method of claim 8, wherein the determining the reduction ratio comprises:
determining the reduction ratio according to the distribution of the at least one region of interest in the image.

### Claim 10 (depends on 1)

The method of claim 1, wherein the generating the reduced image corresponding to the image comprises:
merging, by performing down sampling processing, at least two pixels that have the same target position in the image.

### Claim 11 (depends on 10)

The method of claim 10, wherein the merging the at least two pixels that have the same target position in the image comprises:
merging the at least two pixels according to the parameter of interest of the at least two pixels.

### Claim 12 (depends on 11)

The method of claim 11, wherein the merging the at least two pixels according to the parameter of interest of the at least two pixels comprises:
corresponding to the parameter of interest of a pixel in the at least two pixels being determined to be larger than the parameter of interest of another pixel in the at least two pixels, using the pixel having the larger parameter of interest as a pixel after merging.

### Claim 13 (depends on 1)

The method of claim 1, further comprising:
generating the parameter of interest of pixels in the reduced image.

### Claim 14 (depends on 13)

The method of claim 13, further comprising:
storing or outputting the parameter of interest of the pixels in the reduced image.

### Claim 15 (depends on 13)

The method of claim 13, further comprising:
generating a second change trend parameter of the parameter of interest of the pixels in the reduced image according to the parameter of interest of the pixels in the reduced image.

### Claim 16 (depends on 15)

The method of claim 15, further comprising:
storing or outputting the second change trend parameter.

### Claim 17 (depends on 1)

The method of claim 1, further comprising:
storing or outputting the reduced image.

### Claim 18

An apparatus, comprising:
a processor, coupled to a memory, that executes or facilitates execution of executable modules, comprising:
a region of interest determining module configured to determine at least one region of interest in an image;
a parameter determining module configured to determine parameters of interest for pixels within the image at least according to distribution of the at least one region of interest in the image;
a target position determining module configured to determine target positions for the pixels according to the parameters of interest for the pixels and a reduction ratio; and
a reduced image generating module configured to obtain, according to the target positions of the pixels, a reduced image corresponding to the image.

### Claim 19 (depends on 18)

The apparatus of claim 18, wherein the parameter determining module is further configured to:
determine the parameters of interest for the pixels according to the distribution of the at least one region of interest in the image and distribution information of the pixels in the image.

### Claim 20 (depends on 18)

The apparatus of claim 18, wherein the target position determining module comprises:
a trend parameter generating unit configured to obtain a first change trend parameter of the parameter of interest of the pixels according to the parameter of interest of the pixels.

### Claim 21 (depends on 20)

The apparatus of claim 20, wherein the target position determining module comprises:
a first determining unit configured to determine a first movement direction and a first movement amplitude of the pixels according to the first change trend parameter.

### Claim 22 (depends on 21)

The apparatus of claim 21, wherein the target position determining module further comprises:
a second determining unit configured to determine a second movement direction and a second movement amplitude of the pixels according to the reduction ratio.

### Claim 23 (depends on 18)

The apparatus of claim 18, wherein the executable modules further comprise:
a ratio determining module configured to determine the reduction ratio.

### Claim 24 (depends on 23)

The apparatus of claim 23, wherein the ratio determining module comprises:
a first ratio determining unit configured to determine the reduction ratio according to the distribution of the at least one region of interest in the image.

### Claim 25 (depends on 18)

The apparatus of claim 18, wherein the reduced image obtaining module comprises:
a down sampling unit configured to merge, by performing down sampling processing, at least two pixels that have the same target position in the image.

### Claim 26 (depends on 25)

The apparatus of claim 25, wherein the down sampling unit comprises:
a first subunit configured to merge the at least two pixels according to the parameter of interest of the at least two pixels.

### Claim 27 (depends on 26)

The apparatus of claim 26, wherein the first subunit is further configured to:
in response to the parameter of interest of a pixel in the at least two pixels being determined to be larger than the parameter of interest of other pixels in the at least two pixels, using the pixel as the pixel after merging.

### Claim 28 (depends on 18)

The apparatus of claim 18, wherein the executable modules further comprise:
a parameter obtaining module configured to generate parameters of interest for pixels within the reduced image.

### Claim 29 (depends on 28)

The apparatus of claim 28, wherein the executable modules further comprise:
a storage module configured to store the parameter of interest of the pixels in the reduced image; or
a communications module, configured to output the parameter of interest of the pixels in the reduced image.

### Claim 30 (depends on 28)

The apparatus of claim 28, wherein the executable modules further comprise:
a trend parameter generating module configured to obtain a second change trend parameter of the parameter of interest of the pixels in the reduced image according to the parameter of interest of the pixels in the reduced image.

### Claim 31 (depends on 30)

The apparatus of claim 30, wherein the executable modules further comprise:
a storage module configured to store the second change trend parameter; or
a communications module configured to output the second change trend parameter.

### Claim 32 (depends on 18)

The apparatus of claim 18, wherein the executable modules further comprise:
a storage module configured to store the reduced image; or
a communications module configured to output the reduced image.

### Claim 33

A computer readable storage device comprising executable instructions that, in response to execution, cause a device comprising a processor to perform operations, comprising:
determining a region of interest in an image;
determining parameters of interest for pixels within the image at least according to distribution of the region of interest in the image;
determining target positions for the pixels according to the parameters of interest for the pixels and a reduction ratio; and
generating, according to the target positions of the pixels, a reduced image corresponding to the image.