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Processing method and processing device for image zooming

A technology of image zooming and processing, applied in image communication, television, electrical components, etc., can solve the problems of difficult implementation of hardware circuits, complex algorithms, long operation time, etc., and achieve good compatibility, simple algorithm, and short operation time Effect

Inactive Publication Date: 2009-11-04
SHENZHEN MESADA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems existing in the prior art image zoom processing method that can only zoom images of a specific size, complex algorithms, long operation time, and difficult implementation of hardware circuits. The present invention provides a picture zoom processing method. Method and processing device

Method used

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  • Processing method and processing device for image zooming
  • Processing method and processing device for image zooming

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Experimental program
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Embodiment 1

[0058] Such as figure 1 As shown, a kind of image scaling processing method provided by the present invention comprises steps:

[0059] 101. Receive and decode source image information data to obtain source image bitmap format data; the source image information data is a BMP format image, JPG format image, PNG format image, TGA format image, or PCX format image, etc.;

[0060] 102. According to the set scaling ratio of the first picture, change the number of pixels of the bitmap format data of the source picture according to the position coordinates of the pixels to form the bitmap format data of the intermediate picture;

[0061] 103. According to the set scaling ratio of the second picture, change the number of pixels in the bitmap format data of the intermediate picture according to the average value of the color values ​​of adjacent pixels to form the bitmap format data of the target picture.

Embodiment 2

[0063] On the basis of embodiment 1, in further embodiment 2, the first picture scaling ratio is the picture reduction ratio, and the second picture scaling ratio is the picture enlargement ratio, then the step 102 and the step 103 are specifically include:

[0064] (1). When performing image reduction processing on the source image:

[0065] Set the position coordinates of each pixel in the bitmap format data of the source image. For example, the pixel points in the bitmap format data of the source picture have m rows and n columns in total, and the coordinates of the pixel points located in the i-th row and j-th column are set as (i, j), and the coordinates are set as (i, j) The color value of the pixel point is expressed as f(i, j).

[0066] According to the image reduction ratio value from the source image to the target image, first set a smaller value of the reduction ratio value from the source image to the intermediate image. For example: if the image size of the tar...

Embodiment 3

[0079] On the basis of embodiment 1, in further embodiment 3, the first picture scaling ratio is the picture enlargement ratio, and the second picture scaling ratio is the picture reduction ratio, then the step 102 and the step 103 are specifically include:

[0080] (1). When performing image reduction processing on the source image:

[0081] Set the position coordinates of each pixel in the bitmap format data of the source image. For example, the pixel points in the bitmap format data of the source picture have m rows and n columns in total, and the coordinates of the pixel points located in the i-th row and j-th column are set as (i, j), and the coordinates are set as (i, j) The color value of the pixel point is expressed as f(i, j).

[0082] According to the image reduction ratio value from the source image to the target image, firstly set an appropriate enlargement ratio value from the source image to the intermediate image. For example: if the image size of the target ...

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Abstract

The invention relates to a processing method and a processing device for image zooming. The method comprises the following steps: bitmap formatted data of a source image is obtained by receiving and decoding information data of the source image; the amount of pixels of the bitmap formatted data of the source image is changed according to the position coordinates of the pixel on the basis of a first set image zoom scale to form bitmap formatted data of an intermediate image; the amount of the pixels of the bitmap formatted data of the intermediate image is changed according to the average of color values of adjacent pixels on the basis of a second set image zoom scale to form bitmap data of a target image. The invention realizes zooming for images in various sizes, meets different requirements on display equipment and easily realizes hardware circuit.

Description

【Technical field】 [0001] The invention relates to the field of digital image processing, in particular to an image scaling processing method and processing device. 【Background technique】 [0002] At present, the objects of digital image processing have been involved in many areas of our social life, and image scaling is particularly important as a basic operation of digital image processing. Image scaling processing is to use the image scaling engine to adjust the resolution of the original input image to meet the requirements of the image scaling device when the resolution of the original input image does not match the inherent resolution of the display device. [0003] The commonly used image zoom processing method is linear interpolation algorithm, which uses the interpolation formula to estimate the color of the point according to the correlation of several pixels around the pixel point of the original image to be processed, so as to realize the zoom of the original imag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/30H04N19/182H04N19/44H04N19/59
Inventor 易润平
Owner SHENZHEN MESADA TECH
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