Method and device for encoding frequency conversion block using frequency mask table and method and device for encoding/decoding video using same
A technology of video coding and frequency transformation, which is applied in the field of coding frequency transformation block and video coding/decoding, can solve the problems of difficult frequency coefficient coding and coding equipment, and achieve the effect of improving video compression efficiency
Active Publication Date: 2016-01-20
SK TELECOM CO LTD
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Problems solved by technology
However, if such a 16×16 unit is scanned and encoded at a time in the existing method, it is difficult to design and implement efficient frequency coefficient encoding and such an encoding device according to video characteristics
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[0031] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description, the same elements are denoted by the same reference numerals although shown in different drawings. Also, in the following description of the present embodiment, a detailed description of well-known functions and configurations incorporated herein will be omitted for conciseness.
[0032] In addition, terms such as first, second, A, B, (a) and (b) may exist when describing components of the present invention. These terms are for the purpose of distinguishing one component from other components only and do not imply or imply the substance, order or sequence of these components. If components are described as being "connected," "coupled" or "linked" to other components, these components may be not only directly "connected," "coupled" or "linked" to the other components but also indirectly via third components. "Connect", "...
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One embodiment of the present invention relates to a method and apparatus for encoding a frequency transform block using a frequency mask table and also relates to a method and apparatus for encoding / decoding video using the method and apparatus. An embodiment of the present invention provides a method and apparatus for encoding a frequency transform block using a frequency mask table and a method and apparatus for encoding / decoding video using the method and apparatus, including the steps of: masking by using the frequency mask table frequency transform block to generate a masked frequency transform block; encode information about the frequency transform block and a frequency mask table used to mask the frequency transform block; decode and extract information about the frequency mask table to extract the masked quantization frequency recorded in the bitstream a coefficient row; by using the extracted information about the frequency mask table, all quantized frequency coefficients at positions not recorded in the bitstream are set to 0 to generate a quantized frequency coefficient row; and inverse scanning is performed on the generated quantized frequency coefficient row to form and encode the quantized frequency transform block.
Description
technical field [0001] The present disclosure relates in some embodiments to a method and apparatus for encoding a frequency transform block by using one or more frequency (coefficient) masking tables, and to a method and apparatus for encoding / decoding video by using the method and apparatus Methods and Equipment. More particularly, the present disclosure relates to a method and apparatus for encoding a frequency transform block capable of using a frequency mask table including non-encoding information according to the position of frequency coefficients of the residual block when encoding / decoding the frequency transform block of the residual signal to improve video compression efficiency, and the present invention also relates to a video encoding / decoding method using the method and device. Background technique [0002] The Motion Picture Experts Group (MPEG) and the Video Coding Experts Group (VCEG) have issued new standards for video compression technology superior to t...
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IPC IPC(8): H04N19/463H04N19/18
CPCH04N19/463H04N19/132H04N19/18H04N19/105H04N19/126H04N19/129H04N19/176
Inventor 宋振翰林晶娟金海光文柱禧李英烈韩钟基全炳宇
Owner SK TELECOM CO LTD