CN103597829B

5G,4G,3G,2G

Title

Method for coding video quantization parameter and method for decoding video quantization parameter

Application Number:

CN20128025650

Publication Date:

22-03-2017

Current Assignee:

Family ID:

Application Date:

27-06-2012

Declaring Company:

Publication Country:

US

Priority Date:

28-06-2011

Title

Method for coding video quantization parameter and method for decoding video quantization parameter

Application Number:

CN20128025650

Family ID:

Publication Country:

US

Publication Date:

22-03-2017

Application Date:

27-06-2012

Priority Date:

28-06-2011

Current Assignee:

Declaring Company:

Abstract  Abstract

a quantization parameter for video coding apparatus is provided with: a prediction unit (11) for quantizing parameter generating the prediction quantization parameter from previous reconstruction calculating unit (12) for according to the quantization parameter and prediction quantization parameter to generate the delta quantization parameter and a quantization parameter encoding device (13); for if the delta quantization parameter then quantizing the first binary bit parameter is meaningful the indication indicating differential quantization parameter is positive or negative and indication of the second binary bit quantization parameter of absolute value of other one binary bit by performing binary arithmetic coding.

A video quantization parameter coding device is provided with a prediction unit (11) for generating a prediction quantization parameter from a past reconstruction quantization parameter a computation unit (12) for generating a differential quantization parameter from the quantization parameter and the prediction quantization parameter and a quantization parameter coding means (13) for binary arithmetically coding a first bin indicating whether or not the differential quantization parameter is significant a second bin indicating whether the differential quantization parameter is positive or negative and another bin indicating the absolute value of the differential quantization parameter if the differential quantization parameter is significant.

A video quantization parameter coding device is provided with a prediction unit (11) for generating a prediction quantization parameter from a past reconstruction quantization parameter a computation unit (12) for generating a differential quantization parameter from the quantization parameter and the prediction quantization parameter and a quantization parameter coding means (13) for binary arithmetically coding a first bin indicating whether or not the differential quantization parameter is significant a second bin indicating whether the differential quantization parameter is positive or negative and another bin indicating the absolute value of the differential quantization parameter if the differential quantization parameter is significant.

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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.

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