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An apparatus and method for encoding digital image data in a lossless manner

A data and coding technology, applied in the direction of image communication, digital video signal modification, television, etc., can solve the problem of high energy of residual items

Inactive Publication Date: 2009-12-02
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] One problem with using pixel-based predictions is that the remaining terms still have high energy

Method used

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  • An apparatus and method for encoding digital image data in a lossless manner
  • An apparatus and method for encoding digital image data in a lossless manner
  • An apparatus and method for encoding digital image data in a lossless manner

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Embodiment Construction

[0046] In order to achieve digital transmission of digital signals and take advantage of them, it is often necessary to use some form of signal compression. When achieving high compression ratios in a resulting image, it is equally important to maintain the high quality of the image. Also, its computational efficiency is expected for tiny hardware implementations, which is important in many applications.

[0047] Before explaining one embodiment of the present invention in detail, it should be understood that the present invention is not limited to the detailed construction and arrangement of parts described in the following description or illustrated in the accompanying drawings. The invention is capable of other embodiments and of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein are for the purpose of description and should not be regarded as limiting.

[0048] The image compression used in an aspect of one em...

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Abstract

A method (900) of losslessly compressing and encoding signals representing image information is claimed. A lossy compressed data file (922) and a residual compressed data file (960) are generated. When the lossy compressed data file and the residual compressed file are combined, a lossless data file that is substantially identical to the original data file is created.

Description

[0001] This application is a divisional application of an invention patent application with a filing date of July 2, 2002, an application number of 02817150.0, and an invention title of "equipment and method for encoding digital image data in a lossless manner". technical field [0002] The present invention relates to image processing and compression. More specifically, the invention relates to the lossless coding of video image and audio information in the frequency domain. Background technique [0003] In the principle of general digital signal processing, digital picture processing occupies a very important position. The importance of human visual perception has greatly stimulated interest and progress in this field and in the science of digital image processing. In the field of transmitting and receiving video signals, such as for projecting films and movies, various improvements have been made to image compression techniques. Many current or proposed video systems us...

Claims

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Application Information

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IPC IPC(8): H04N19/102H04N19/13H04N19/14H04N19/96H04N7/26
Inventor V·R·拉维德兰K·塞亚加拉简J·拉特泽尔S·A·莫利
Owner QUALCOMM INC