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A method to quantify difference for video code processing and its device

A technology of video coding and quantization method, applied in the field of difference quantization method and device thereof, can solve the problems of low frequency component oversampling, sampling signal redundancy, occurrence frequency redundancy, etc.

Active Publication Date: 2007-05-16
BEIJING MICRO VISION COMM DIGITAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because real video signals contain low-frequency components that account for the majority, 2 times the sampling frequency will cause oversampling of low-frequency components
Therefore, there will be a considerable amount of redundancy in the sampled signal
[0008] 2. Oversampling to bit resolution - Redundancy also arises from oversampling the resolution (number of bits) per sample
[0012] 6. Occurrence redundancy - some video elements can be expected to have a higher frequency than others

Method used

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  • A method to quantify difference for video code processing and its device
  • A method to quantify difference for video code processing and its device
  • A method to quantify difference for video code processing and its device

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Embodiment Construction

[0023] In order to facilitate the understanding of the specific technical solutions of the present invention, the specific technical concepts involved are firstly defined.

[0024] definition:

[0025] Quantization - converting information into a discrete form that is different from its original form. For example, 0, 1, 2, 3, 4, 5, and 6 can be quantized into 2, 4, and 6 using the following algorithm.

[0026] If(input value)<4 then(output value)=2: GoTo End

[0027] If(input value)>3 AND(input value)<6 then(output value)=4 Else

[0028] (output value) = 6

[0029] end

[0030] Quantizer - An instrument or algorithm that forms quantized (discrete form) information.

[0031] Delta - The result of the difference or subtraction of two values.

[0032] For example, A=(B-C) means that A is the difference between B and C. If B is greater than C, then the delta value is positive. If C is greater than B, the delta value is negative.

[0033] Correlation - A compar...

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PUM

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Abstract

The provided nonlinear differential quantizer for video coding system comprises: a first differential quantization unit with a quantizing subcell to convert every difference between near pixel values of video information into relative discrete step length to be scaled for full size of pixel amplitude, an overflow checkup subcell to check and correct the upper and / or overflow according to pixel amplitude. This invention can generate nonlinear feature coincident with human visual reaction system, and holds all HF components for well clearness and resolution.

Description

technical field [0001] The present invention generally relates to the field of video coding and compression, and more specifically relates to a difference quantization method and device used in video coding processing. Background technique [0002] Existing video coding implementations are based on frequency-domain algorithms, such as those encoder algorithms that apply cosine transforms in the frequency domain. But these encoder algorithms have some drawbacks. For example, semiconductor implementations of real-time frequency-domain encoders typically require more than 8 million transistors. Frequency domain coders use quantized frequency components to reduce the amount of encoded information. This may result in the loss of some high frequency components, reducing the clarity and resolution of the video. VICOMP (Video Coding and Compression System and Device) is a digital video coding scheme based on high-quality, real-time, high-efficiency video coding (high compression ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/173C07C67/52C07C67/54C07C69/82G01S1/02G01S5/02G01S5/06G01S5/12G01S19/27G02B26/10G03B5/00G03B7/093G03B11/00G03B17/02G04G7/02G06F1/16G06F3/00G06F9/46G06F11/00G06F11/10G06F13/00G06F13/12G06F13/36G06F13/362G06F15/00G06F15/16G06F15/173G06F21/24G06K9/00G06K9/62G06K17/00G06K19/00G06T9/00G08C19/16G09C1/00G09G3/02G10L19/00G11B20/10G11B20/14G11B20/18G11B20/22H01L27/00H01L27/146H01Q1/24H01Q21/24H03L7/091H03M13/03H03M13/13H03M13/23H03M13/27H03M13/29H04B1/16H04B1/707H04B7/005H04B7/185H04B7/24H04B7/26H04B14/00H04H60/72H04J3/06H04J13/00H04J13/16H04L1/00H04L1/18H04L7/00H04L9/08H04L9/10H04L9/14H04L9/28H04L9/32H04L12/08H04L12/16H04L12/28H04L12/417H04L12/46H04L12/54H04L25/02H04L25/03H04L25/49H04L25/497H04L27/02H04L27/10H04L27/156H04L27/18H04L27/34H04L47/2416H04L69/40H04M1/00H04M1/66H04M1/715H04M1/724H04M1/72415H04M1/73H04M3/00H04M3/16H04M3/22H04M3/42H04M11/00H04M11/06H04N1/028H04N1/031H04N1/191H04N5/04H04N5/073H04N5/12H04N5/225H04N5/232H04N5/272H04N5/38H04N5/44H04N5/46H04N5/60H04N5/64H04N5/66H04N5/74H04N5/76H04N5/765H04N5/775H04N5/85H04N5/907H04N5/91H04N5/92H04N7/01H04N7/015H04N7/08H04N7/16H04N7/24H04N7/36H04N7/52H04N9/31H04N9/64H04N9/79H04N9/804H04N17/00H04N19/00H04N19/124H04N19/152H04N19/182H04N19/60H04N21/41H04N21/414H04N101/00H04Q3/00H04R3/12H04W4/06H04W4/10H04W4/12H04W4/14H04W4/16H04W8/02H04W8/06H04W8/08H04W8/16H04W8/20H04W8/24H04W8/26H04W24/00H04W24/04H04W24/08H04W24/10H04W28/02H04W28/04H04W28/08H04W28/16H04W28/22H04W36/02H04W36/04H04W36/18H04W36/30H04W40/22H04W48/06H04W48/08H04W48/14H04W48/16H04W52/02H04W52/24H04W56/00H04W60/00H04W64/00H04W68/00H04W68/02H04W72/04H04W72/08H04W72/12H04W72/14H04W72/54H04W74/08H04W76/02H04W76/04H04W76/06H04W80/06H04W84/04H04W84/08H04W84/12H04W84/18H04W88/02H04W88/04H04W88/06H04W88/12H04W88/18H04W92/12
CPCH04L65/4061H04L65/1016H04L41/5009H04N2201/3212H04L41/5087H04L43/0829H04L43/50H04L65/1043H04L61/2553H04L69/16H04L69/166H04L67/1034G01S1/026G01S5/021G01S5/06G06F1/1626G06F1/1639G06F3/0481G06F21/305G06F21/6209G06F21/74G06F21/88G11B20/10009G11B20/10425G11B20/22G11B27/034H01L27/14625H03L7/091H04B1/707H04B7/18582H04B7/2628H04B7/2687H04B10/25754H04J13/0077H04J13/16H04L1/0002H04L1/0015H04L1/0041H04L1/0057H04L1/006H04L1/0066H04L1/0068H04L1/0071H04L1/1685H04L1/1841H04L1/187H04L9/085H04L9/304H04L12/40117H04L12/417H04L12/462H04L12/4641H04L25/03038H04L25/03343H04L25/03866H04L25/4902H04L25/4904H04L25/497H04L27/02H04L27/156H04L27/3416H04L51/04H04L63/126H04M3/007H04M3/16H04M3/42221H04M7/0057H04M7/1295H04M11/06H04N1/00957H04N1/031H04N1/0318H04N1/1934H04N1/1935H04N1/32106H04N1/40H04N5/04H04N5/073H04N5/126H04N5/272H04N5/38H04N5/4448H04N5/445H04N5/45H04N5/46H04N5/64H04N5/642H04N5/66H04N5/76H04N5/775H04N5/85H04N5/907H04N7/0112H04N7/0122H04N7/163H04N7/17327H04N9/3129H04N9/641H04N9/642H04N9/7925H04N9/8042H04N21/234318H04N21/2368H04N21/2383H04N21/2543H04N21/2547H04N21/41415H04N21/4143H04N21/4181H04N21/42653H04N21/4312H04N21/4314H04N21/4318H04N21/433H04N21/4341H04N21/43622H04N21/43632H04N21/4382H04N21/44012H04N21/440218H04N21/4532H04N21/458H04N21/4621H04N21/4623H04N21/47211H04N21/6175H04N21/6187H04N21/6582H04N21/812H04N21/84H04N21/854H04Q3/0025H04Q3/60H04R1/028H04S7/301H04W4/10H04W4/12H04W4/14H04W8/245H04W8/26H04W8/265H04W12/10H04W24/00H04W28/00H04W28/18H04W28/26H04W36/02H04W40/00H04W40/02H04W48/08H04W52/0225H04W52/0248H04W52/0274H04W52/30H04W56/00H04W64/00H04W68/00H04W72/1268H04W74/0816H04W74/0833H04W80/00H04W84/042H04W84/08H04W84/12H04W88/06H04W88/085H04W88/16H04W92/02H04W92/12G06F2221/2105G06F2221/2115H04L2001/0098H04L2012/40215H04L2012/40273H04N2201/02493H04N2201/03112H04N2201/03187H04Q2213/1302H04Q2213/13039H04Q2213/1304H04Q2213/13076H04Q2213/13095H04Q2213/13109H04Q2213/13298H04Q2213/13349H04J3/0658H04L41/06H04N2201/0094H04N2201/3274H04N2201/3222H04L45/04H04L45/24H04L47/72H04L47/745H04L47/765H04L47/11H04L47/15H04L47/193H04L47/2416H04L47/27H04L47/283H04L47/34H04L47/822H04L47/824H04L49/9094H04J3/0655H04L69/18H04L69/40Y10S370/906Y10S370/907H04L69/14H04L69/161H04L69/163H04N19/139H04N19/70H04N19/51H04N19/115H04N19/61H04N19/109H04N19/91H04N19/152H04N19/174H04N19/19H04N19/194H04N19/527H04N19/517H04N19/625H04L47/70H04N2201/03133H04N2201/03141H04N2201/03145H04W76/18H04W76/10H04W76/30H04W76/45H04W76/34H04W76/12H04N21/426Y02D30/70H04M1/715H04M1/72415H04M1/724H04N21/43072H04L43/091H04L51/48H04L51/58H04L65/613H04L65/765H04L65/1104H04L65/70H04L67/1001H04N23/57H04N23/684H04N23/6845H04N23/6811H04N23/683H04N23/68H04N23/6812H04W72/52H04W72/23H04W74/002
Inventor 李将毕景江熊杰
Owner BEIJING MICRO VISION COMM DIGITAL TECH
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