# US 2014/0193085 A1 · Image manipulating system and method

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- Number: US 2014/0193085 A1
- Document ID: US20140193085A1
- Status: Published application
- Kind: A1
- Application number: 14/203,466
- Filed: 2014-03-10
- Published: 2014-07-10
- Earliest claimed: 2010-05-13
- Inventors: HOU-HSIEN LEE; CHANG-JUNG LEE; CHIH-PING LO
- Web page: https://patentgrep.com/patent/US20140193085A1

## CPC

- G06V 10/50: by performing operations within image blocks; by using histograms, e.g. histogram of oriented gradients [HoG]; by summing image-intensity values; Projection analysis
- G06T 7/97: {Determining parameters from multiple pictures (depth or shape recovery from multiple images G06T7/55; stereo camera calibration G06T7/85)}
- G06V 10/36: Applying a local operator, i.e. means to operate on image points situated in the vicinity of a given point; Non-linear local filtering operations, e.g. median filtering
- G06T 2207/10024: Color image
- G06V: IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06T: IMAGE DATA PROCESSING OR GENERATION, IN GENERAL

## Abstract

An image comparing system acquires a pixel value of each pixel in two images, and obtains two groups of relative values corresponding to the two images respectively. The two group of relative values is used for determining whether two images are the same.

## Claims

### Claim 1

An image comparing system comprising:
a processing unit;
a storage unit connected to the processing unit and storing a plurality of programs to be executed by the processing unit, wherein the storage unit comprises:
a reading module to acquire a pixel value of each pixel in two images respectively;
a converting module to calculate ratios between the pixel value of each pixel and a pixel value of each other pixels which are adjacent to the pixel, for obtaining two groups of relative values corresponding to the two images respectively;
a storing module to store the two groups of relative values; and
a comparing module to compare the two groups of relative values to determine whether the two images are the same.

### Claim 2 (depends on 1)

The image comparing system of claim 1, wherein upon the condition that corresponding relative values from each of the two groups of relative values are a n % match, the two images are regarded as the same, n is a preset value.

### Claim 3 (depends on 1)

The image comparing system of claim 1, wherein each group of relative values comprises the ratios between the pixel value of each pixel and a pixel value of each other pixels which are adjacent to the pixel, and orientations of the adjacent pixels relative to the pixel.

### Claim 4 (depends on 1)

The image comparing system of claim 1, wherein each group of relative values comprises the ratios between the pixel value of each pixel and a pixel value of each other pixels which are adjacent to the pixel, the ratios are arranged in series according to orientations of the adjacent pixels relative to the pixel.

### Claim 5 (depends on 4)

The image comparing system of claim 4, wherein upon the condition that there is no pixel at an orientation of the pixel, the relative value at the orientation is marked as a symbol.