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Sampling method for image data

An image data and image technology, applied in the field of image data sampling, can solve the problem of inability to further reduce the memory storage capacity.

Inactive Publication Date: 2005-08-03
VIA TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, displaying the sampling method of known image data cannot further reduce the memory storage capacity required for image sampling processing.

Method used

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  • Sampling method for image data
  • Sampling method for image data
  • Sampling method for image data

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Embodiment Construction

[0060] Please refer to Fig. 3 (a), it is a first preferred embodiment of the present invention cooperates with 4: 1: 1 (or be called 4: 2: 0) subsampling algorithm rule to this in Fig. 1 (a) A schematic diagram of an implementation concept of image sampling processing performed by the first to third groups of image blocks 11 to 13 . Continuing and cooperating with the above-mentioned related descriptions of the concept shown in FIG. 2(a), it can be seen that the key point of the preferred implementation concept shown in FIG. Formation requires only 4 bytes to store the basic coding unit M12. Wherein, the four image sampling sub-blocks in the basic coding unit M12 may be the second and third image sampling sub-blocks Y2, Y3, the second image sampling sub-blocks in the first group of image sampling blocks 111, respectively. A group of image sampling blocks 112 (ie, the image sub-sampling block Cr′), and the third group of image sampling blocks 113 (ie, the image sampling sub-bl...

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Abstract

This invention relates to a sampling method for image data including: providing multiple image data including: providing multiple image pixels matched up by three sets of image blocks belonging to the blocks from the first to the third image formats and any set is composed of the first to fourth image sub-blocks and carrying out an image sampling process to get the sub-blocks of the first t the fourth from the three-sets image blocks, among which, said second and third image sampling sub-blocks belong to the first image format, the first and fourth sub-blocks belong to the second and third formats, which effectively reduce the necessary memory storage capacity.

Description

technical field [0001] The invention relates to a sampling method of image data, in particular to a sampling method of image data related to image encoding and compression technology. Background technique [0002] As the current digital image processing technology is becoming more and more advanced and developed, its related applications are also becoming more and more popular, such as discussing web cameras, network digital cameras, cellular and picture phones, personal digital assistants (PDA) , Multimedia computer, etc. related to digital image processing technology, that presents an ascendant trend. The present invention is an invention related to the digital image processing technology. [0003] In order to speed up the transmission speed of the image, the image compression processing is usually performed before the image data is transmitted, for example, the image data can be compressed into an image compression format such as JPEG or MPEG. Because if the general inp...

Claims

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Application Information

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IPC IPC(8): H04N11/04
Inventor 江晋毅黄心威许晋嘉
Owner VIA TECH INC