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Picture coding method and apparatus

An image coding and coding technology, which is applied in the field of image and video compression coding, can solve problems such as not fully satisfying image compression requirements, and achieve the effects of convenient implementation, elimination of high-frequency distortion, and reduction of complexity

Active Publication Date: 2012-05-09
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, neither the video compression coding technology nor the static image compression coding technology can fully meet the image compression requirements.
In other words, there is currently no solution that can solve the image compression problem in this case

Method used

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  • Picture coding method and apparatus
  • Picture coding method and apparatus

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Embodiment Construction

[0048]The scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0049] The present invention first needs to set an image model, and the set image model may include three types of binary image, multi-value image and continuous tone image, and of course may only include some two of these three types. A binary image is an image with only two color values, foreground and background, a multi-value image is an image with a few color values, and a continuous tone image is an image with continuously changing colors. Most text and charts are binary or multi-valued images, and photos, videos, etc. are generally continuous-tone images.

[0050] Based on the above settings, the processing flow of the program of the present invention is as follows figure 1 As shown, corresponding to the following steps:

[0051] Step 101. Analyze the original image to be compressed, divide the original image in...

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PUM

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Abstract

The invention discloses an image code method, which first sets an image mode. And the method further comprises that a, analyzing object initial image, dividing the initial image into at least one image block, and finding the image mode relative to each image block, b, selecting a compression code method relative to the image mode of the image block, and using the selected compression code method to code relative images. The invention also discloses an image code device. The invention can resolve the problem of prior art which can not process right compression code on image when the image is not confirmed as dynamic image or static image. The inventive compression code method can be used for various images, to resolve aforementioned problems.

Description

technical field [0001] The present invention relates to image and video compression encoding technology, in particular to an image encoding method and device. Background technique [0002] Currently, image and video compression technologies are widely used in various occasions such as digital television, image processing, and video conferencing. With the development of image and video technology, there are many kinds of compression coding technologies, including Motion Picture Experts Group (MPEG)-2, MPEG-4, Advanced Video Codec (AVC) / H.264, digital TV audio Video Codec (AVS), VC-9, Joint Photographic Experts Group (JPEG), JPEG 2000, etc. Among them, MPEG-2, MPEG-4, AVC / H.264, AVS and VC-9 are compression coding technologies specially designed for dynamic images. JPEG and JPEG 2000 are used to compress still images. [0003] Most of the above-mentioned video compression coding technologies for dynamic images adopt the compression technology of transformation and quantizat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N9/64G06T9/00H04N19/103H04N19/124H04N19/156H04N19/176H04N19/436H04N19/61H04N19/91
Inventor 蒋晓华颜毅强孙成昆彭绍平刘渤
Owner LENOVO (BEIJING) LTD