HEVC (high efficiency video coding) intra-frame coding processing method and device
A technology of intra-frame coding and processing method, which is applied in the fields of digital video signal modification, electrical components, and image communication. The effect of improving calculation speed
Active Publication Date: 2016-06-15
TENCENT TECH (SHENZHEN) CO LTD
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[0005] Practice has found that the calculation process of the rate-distortion cost needs to go through the process of prediction, transformation and quantization, CABAC (Context-based Adaptive Binary Arithmetic Coding, Adaptive Binary Arithmetic Coding) coding, inverse transformation and inverse quantization, etc. The most time-consuming part, which seriously affects the HEVC encoding speed
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[0020] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.
[0021] The terms "first", "second", "third" and the like in the description and claims of the present invention and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive ...
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The invention relates to an HEVC (high efficiency video coding) intra-frame coding processing method. The HEVC intra-frame coding processing method is used for simplifying a calculation process of rate distortion cost and improving HEVC encoding speed. According to the embodiments of the invention, the method includes the following steps that: first brightness rate distortion cost and second brightness rate distortion cost are calculated, wherein the first brightness rate distortion cost is the rate distortion cost of the brightness component of a first CU of the current layer, and the second brightness rate distortion cost is the rate distortion cost of the brightness components of a plurality of second CUs of the next layer corresponding to the first CU; and the first brightness rate distortion cost and the second brightness rate distortion cost are compared with each other, and whether the next layer is divided is judged according to a comparison result. The embodiment of the invention also provides a corresponding device.
Description
technical field [0001] The present invention relates to the technical field of video coding, in particular to an HEVC intra-frame coding processing method and device. Background technique [0002] High Efficiency Video Coding (HEVC) is the next generation of new video compression standards, and its goal is to improve the video compression efficiency by more than 30% compared with the existing H.264 / AVC (Advanced Video Coding, advanced video coding) High Profile (high-end specification), to use To replace the H.264 / AVC coding standard. [0003] Coding tree unit (CTU) is the basic unit of HEVC coding, similar to the macroblock (Macroblock) in H.264 / AVC. The size of CTU can be from 16x16 to 64x64, and the unit is pixel. A CTU can contain a coding unit (CodingUnit, CU) or be divided into multiple smaller CUs. CU is the most basic unit of HEVC inter-frame and intra-frame coding. The size can be 64×64, 32×32, 16×16 and 8×8, and the unit is pixel. [0004] In the HEVC encoding t...
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IPC IPC(8): H04N19/593H04N19/13H04N19/124H04N19/147H04N19/176H04N19/186
CPCH04N19/124H04N19/13H04N19/147H04N19/176H04N19/186H04N19/593
Inventor 邓海波郭利财谷沉沉毛煦楠
Owner TENCENT TECH (SHENZHEN) CO LTD