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Method and device for coding, decoding and compressing image

A digital image and receiving device technology, applied in image communication, television, electrical components, etc.

Inactive Publication Date: 2005-03-09
MITSUBISHI ELECTRIC CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore prior art encoding methods attempt to mathematically identify a region in the image that should have higher fidelity or less loss than other regions in the image based on a judgment of importance

Method used

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  • Method and device for coding, decoding and compressing image
  • Method and device for coding, decoding and compressing image
  • Method and device for coding, decoding and compressing image

Examples

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Embodiment Construction

[0026] The object of the present invention is a method and apparatus for performing still image compression in which the user on the transmitting side can designate an area that is important to him or her before the encoding process, or in which the user on the receiving side can The received bit stream is used to determine the region of interest, and the desired region is identified in the subsequent encoding process to emphasize the region of interest. In the first case, the encoding can be done offline by the user at the transmitting side confirming the ROI. When the ROI is identified by the user at the recipient, then the encoding must be done online.

[0027] After the ROI is determined, the compression method or algorithm only scales up the wavelet transform system corresponding to the data in the ROI. The compression method may be, for example, the SPIHT method of Seid and Perelman; for the convenience of this description, the SPIHT method will be used as an example, b...

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Abstract

This invention relates to a method for picture coding and decoding and its device. Mode of treating data: Provide the data of the picture, arrange the data in order according to the mathematical protocol; transmit the ordered data and repeatedly arrange the order and transmit, until the rebuild picture partly appeared, according to the rebuild picture to select the interested region; to sign the interested region; adjust the arranged order according to the interested region, correspond the data of interested region and data of other regions it has more priority degree, then transmit the above adjusted data. Use of this invention can point out the interested region before the beginning action of coding then can raise the speed and (or) raise the realizable degree of interested region. So this system can make the rebuild digital picture transmitted by communicate circuit (128) more efficiently.

Description

[0001] This case is a divisional application after the international application PCT / US98 / 03811 (its application date is March 20, 1998 and its publication number is WO 99 / 49413) entered the national phase (Chinese patent application number 98813906.5). technical field [0002] Modern computers and modern computer networks enable the transfer of large amounts of information between computers and between computers and storage devices. When a computer accesses a local storage device such as a local hard drive or a local floppy drive, large amounts of information can be accessed quickly, but when attempting to access data from a remote storage location, such as over a wide area network (WAN) or the Internet , the data transfer speed will be significantly slower. Therefore transferring large files takes a lot of time. In addition, the storage of large files also uses valuable and limited storage space. Photographic images and similar graphic images are generally considered large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/102H04N1/41H04N19/126H04N19/136H04N19/147H04N19/167H04N19/176H04N19/196H04N19/34H04N19/37H04N19/46H04N19/463H04N19/59H04N19/70H04N19/80H04N19/91
CPCH04N19/167
Inventor E·渥美英二N·法瓦丁
Owner MITSUBISHI ELECTRIC CORP
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