Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and apparatus for data compression using non-uniform reconstruction space

A technology of spatial parameters and video data, applied in the fields of digital video signal modification, image communication, electrical components, etc.

Active Publication Date: 2018-08-07
BLACKBERRY LTD
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Video presents considerable challenges to data compression due to the large amount of data required for each video frame and the speed at which encoding and decoding often need to occur

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method and apparatus for data compression using non-uniform reconstruction space
  • Method and apparatus for data compression using non-uniform reconstruction space
  • Method and apparatus for data compression using non-uniform reconstruction space

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] In the following description, some exemplary embodiments are described with reference to the H.264 standard for video encoding. Those of ordinary skill in the art will understand that this application is not limited to H.264, but is applicable to other video encoding / decoding standards, including possible future standards, for example, HEVC, multi-view encoding standard, scalable video encoding Standards, and reconfigurable video coding standards. It will also be clear that this application is not necessarily limited to video encoding / decoding, and can be applied to audio encoding / decoding, image encoding / decoding, or lossy encoding / decoding of any other data. This application is widely applied to any lossy data compression process that uses quantization, regardless of the type of data being encoded / decoded.

[0031] In the following description, when referring to video or images, the terms frame, slice, tile, and rectangular slice group may be used interchangeably to som...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Encoding and decoding methods are presented that use adaptive reconstruction levels. Reconstruction space parameters are developed by an encoder and inserted in the bitstream with the encoded video data. The reconstruction space parameter may include parameters from which the decoder can determine the levels for dequantization of the encoded video data. The reconstruction space parameters may include a first reconstruction level and a step size between other levels. The first reconstruction level may not equal the step size. In some cases, neither may be equal to the quantization step size used to quantize the transform domain coefficients.

Description

[0001] Copyright notice [0002] A part of the disclosure of this document and ancillary materials includes materials that require copyright. The copyright owner does not object to anyone's reproduction of patent documents or patent publications published in the patent and trademark office files or records, but reserves all other copyright rights in any case. Technical field [0003] This application generally relates to data compression, and in particular, to a method and device for quantization using non-uniform reconstruction space. Background technique [0004] Data compression occurs in many contexts. Data compression is very commonly used in communications and computer networking to efficiently store, transmit and reproduce information. It has specific applications in image, audio and video coding. Due to the large amount of data required for each video frame and the encoding and decoding speeds that often need to occur, video presents considerable challenges to data compre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/189H04N19/14H04N19/44H04N19/463H04N19/70H04N19/61H04N19/176H04N19/134H04N19/46
CPCH04N19/126H04N19/134H04N19/14H04N19/176H04N19/196H04N19/44H04N19/46H04N19/463H04N19/70
Inventor 余祥王競何大可
Owner BLACKBERRY LTD