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Distributed coding method of still image

A distributed coding and static image technology, applied in the field of image processing, can solve the problems of large amount of calculation, achieve high signal-to-noise ratio gain, speed up, and improve the effect of signal-to-noise ratio gain

Active Publication Date: 2015-03-18
SHENGLONG ELECTRIC
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Problems solved by technology

Since these methods need to distinguish between edge pixels and non-edge pixels, the amount of calculation is quite large.

Method used

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  • Distributed coding method of still image
  • Distributed coding method of still image
  • Distributed coding method of still image

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Embodiment Construction

[0017] In order to better understand the present invention, the content of the present invention is further illustrated below in conjunction with the examples, but the content of the present invention is not limited to the following examples. Those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms are also within the scope of the claims listed in this application.

[0018] like figure 1 As shown, the pixels of the image can be divided into two types: type A and type B. Then there are always 4 pixels of type A adjacent to one pixel of type B, which has a relatively large degree of correlation statistically, so the image Can be divided into two "sub-images": a sub-image composed of type A pixels and a sub-image composed of type B pixels .

[0019] Since pixel type A and pixel type B have a strong correlation, the sub-image and subimage It also has a strong correlation, such as figure 2 As shown, Lena's ...

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Abstract

The invention provides a distributed coding method of a still image. The method includes that as for the still image, the image can be divided into two relevant sub-images, the sub-images are respectively coded, a decoding end performs joint decoding so as to recover the original image, and good rate-distortion characteristic and subjective quality can be obtained under the condition that a certain compression ratio is guaranteed. Compared with other image coding methods, the method has the advantages that the coding is extremely simple, the problem that the coding end resource and network resource in a wireless image (video) transmission system are limited is mainly solved, particularly in the poor channel environment, the method has a high error code resistant capability, and as for extreme case, one way of data is merely used for decoding the image.

Description

technical field [0001] The invention relates to an image encoding method, in particular to a distributed encoding method for still images, and belongs to the technical field of image processing. Background technique [0002] In recent years, with the rapid development of information technology, the problem of real-time transmission of large-scale image and video multimedia signals in wireless networks has received widespread attention. In particular, the emergence of high-speed wireless networks and wireless handheld devices with video capture, encoding, and transmission capabilities equipped with cameras provides a necessary platform environment for wireless video with large data volumes. However, due to the particularity of the application of the above technologies, the existing video coding and decoding processing technology must have the characteristics of low coding complexity, good rate-distortion performance, and strong anti-error performance, and the traditional vide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/154H04N19/147H04N19/159H04N19/166H04N19/184H04N19/593
Inventor 武明虎周尚丽常雨芳周茉干宗良李然
Owner SHENGLONG ELECTRIC
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