Scalar quantization using bit-stealing for video processing and its application in video coding

A bit and coding technology, applied in the field of scalar quantization, which can solve problems such as incompleteness and increased rate-distortion

Inactive Publication Date: 2010-12-29
THE HONG KONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this technique associates the adjustment of the size of the dead zone with DZ+UTQ, such as using the parameters of the dead zone (z) and/or the compensation value (f) during rounding to improve the coding efficiency of the scalar quantizer during coding, bu...

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  • Scalar quantization using bit-stealing for video processing and its application in video coding
  • Scalar quantization using bit-stealing for video processing and its application in video coding
  • Scalar quantization using bit-stealing for video processing and its application in video coding

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Embodiment Construction

[0021] Various embodiments are used herein to illustrate systems, methods, and apparatus for adaptively zeroing transform coefficients using bit-stealing parameters. However, the present invention is not limited to these examples.

[0022] In order to make the technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with examples. However, one skilled in the art will appreciate that the techniques may be practiced without one or more of the details, or in combination with other methods, means, or materials. In other cases, commonly used structures, materials, or operations are not described in detail to avoid confusion.

[0023] Reference to "one embodiment" throughout the specification means that a specific function, structure or feature described in conjunction with the embodiment is included in at least one embodiment. Thus, references to "one embodiment" in this specification are n...

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Abstract

The application discloses a scalar quantization using bit-stealing for video processing and its application in video coding. Systems, methods, and apparatus for adaptively zeroing out transform coefficients utilizing a bit-stealing parameter are presented herein. A partitioning component can be configured to separate an image into blocks of video data. Further, a frequency transform component canbe configured to transform pixels of a block of the blocks into transform coefficients. Furthermore, a bit-stealing quantization component configured to predefine quantization intervals. Moreover, the bit-stealing quantization component can modify a size of a quantization interval of the quantization intervals based on a variable bit-stealing parameter. Further, the bit-stealing component can quantize a transform coefficient of the transform coefficients, based on the quantization interval, to a quantized coefficient value of quantized coefficient values.

Description

[0001] This application claims priority to US Provisional Patent Application No. 61 / 213,559, filed June 19, 2009, entitled "Scalar Quantization Using Bit Steering Method and Its Application to Video Coding." This application is incorporated herein by reference in its entirety. technical field [0002] In general, this application relates to the field of image processing, including but not limited to scalar quantization using bit-steering methods for video processing. Background technique [0003] The demand for efficient data compression (or more generally, encoding) techniques continues to increase. For example, video encoding is a core technology for many applications, including: consumer electronics, such as DVD players / recorders, digital cameras, mobile phones, etc.; Internet, such as streaming video applications, distance education, monitoring and / or or security applications and so on. In addition, audio compression technology also has a wide range of applications, su...

Claims

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Application Information

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IPC IPC(8): H04N7/26
CPCH04N19/00278H04N19/00775H04N19/00096H04N19/00157H04N19/176H04N19/60H04N19/126H04N19/14H04N19/124
Inventor 区子廉张毅文张星宇
Owner THE HONG KONG UNIV OF SCI & TECH
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