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Method for image amplifying interpolation

A technology of interpolation and image, which is applied in the field of image magnification and interpolation, and can solve problems affecting image quality, image jagged, poor image effect, etc.

Inactive Publication Date: 2005-05-11
VIMICRO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method is fast in interpolation and magnification, the resulting image often has obvious jaggedness, which seriously affects the quality of the image.
Therefore, in the current application environment that requires fast image magnification and interpolation, the effect of the enlarged image is very poor, which cannot meet the needs of users.

Method used

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Embodiment Construction

[0018] Hereinafter, the present invention will be further described in detail with reference to the drawings and specific embodiments of the specification.

[0019] figure 1 It is a schematic diagram of an image enlargement and interpolation method in the prior art. In the figure, the left part is the original image, and the right part is the image after interpolation and magnification. L1 to L4 are all image rows / columns in the original image, and Lnew is the interpolation row. When a row of Lnew needs to be inserted between image rows / columns, the prior art adopts a direct averaging method, that is, the pixel values ​​of L2 and L3 of two adjacent rows of Lnew are added and averaged as the pixel value of Lnew. Get the interpolated and enlarged image on the right. This method is quite simple and fast, but it has serious defects such as poor image effects and obvious aliasing.

[0020] Although there are many interpolation methods at present, you can get good interpolation and zo...

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Abstract

An interpolation method for image enlargement includes confirming interpolation line position, using picture element values of the first adjacent line and the second adjacent line of the interpolation line to confirm picture element value of interpolation line for making interpolation, carrying out smooth processing for the first adjacent line, the second adjacent line and interpolation line.

Description

Technical field [0001] The invention relates to a method of digital image processing, in particular to a method of image enlargement and interpolation. technical background [0002] Interpolation is also called "reset sample". It is a method of increasing the pixel size of an image without generating pixels. Based on the color of surrounding pixels, a mathematical formula is used to calculate the color of the missing pixel, which is based on the center pixel. The color parameter simulates the method of surrounding pixel values. Interpolation is the basis of image scaling. At present, there are a variety of interpolation methods. They have their own advantages and disadvantages in terms of computational complexity, magnification speed, and image quality. Generally speaking, if the interpolation processing speed is relatively fast, the magnified image will be The quality is relatively poor. On the contrary, if the speed is slow, the quality is relatively good. For example, a simple...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40G06T5/20
CPCG06T3/4007
Inventor 曹玉弟
Owner VIMICRO CORP
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