A Fast Mode Selection Method for Spatial Enhancement Layer in Scalable Video Coding
A mode selection and video coding technology, which is applied in the direction of digital video signal modification, electrical components, image communication, etc., can solve the problems of unable to adjust the coding situation, the coding effect depends on the threshold setting, and high complexity, so as to increase the complexity and reduce the Computational complexity, the effect of adaptive reduction
Inactive Publication Date: 2016-10-26
SOUTHEAST UNIV
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[0017] However, the above algorithms have certain limitations
Literature [2] needs to search for all small block patterns such as 8×8, and the complexity is still very high; the candidate patterns in literature [3] are all obtained through table lookup, and cannot be adjusted according to the actual coding situation; literature [5] needs to be Multiple threshold comparisons, the encoding effect depends on the threshold setting
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[0048] Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.
[0049] A fast mode selection method for the spatial enhancement layer of scalable video coding, using the correlation between the spatial enhancement layer macroblock and the corresponding base layer macroblock, the correlation of inter-layer quantization parameters, and the correlation of the coding cost of adjacent macroblocks to To reduce the computational complexity of the spatial enhancement layer macroblock mode selection process, the specific scheme is as follows:
[0050] 1 Speeding up mod...
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The invention discloses a fast mode selection method of a scalable video coding spatial enhancement layer, which is mainly a novel fast mode selection method of a spatial enhancement layer used in the H.264 scalable video coding (SVC) standard. The invention proposes a novel fast mode selection method for the spatial enhancement layer for the H.264 Scalable Video Coding (SVC) standard. In order to improve coding efficiency, H.264 / SVC adds three inter-layer prediction techniques on the basis of H.264 / AVC. However, this greatly increases the complexity of the SVC mode selection algorithm and affects the practicability of the SVC standard. The algorithm proposed by the present invention makes full use of the correlation between spatial enhancement layer macroblocks and corresponding basic layer macroblocks, the correlation of quantization parameters between layers, and the correlation of coding costs of adjacent macroblocks, while maintaining coding efficiency , which effectively reduces the operational complexity of the mode selection algorithm, and provides theoretical reference value and practical application significance for the optimization of the SVC encoder.
Description
technical field [0001] The invention relates to a fast mode selection method for a scalable video coding space enhancement layer, and is mainly a novel fast mode selection method for a spatial enhancement layer used in the H.264 scalable video coding (SVC) standard. Background technique [0002] Acronyms and key term definitions: [0003] SVC Scalable Video Coding Scalable Video Coding [0004] AVC Advanced Video Coding Advanced Video Coding [0005] QP Quantization Parameter quantization parameter [0006] JSVM Joint Scalable Video Model joint scalable video model [0007] RDO Rate-Distortion Optimization rate distortion optimization [0008] RDCost Rate-Distortion rate distortion cost [0009] GOP Group of Picture picture group [0010] PSNR Peak Signal-to-noise Ratio Peak signal-to-noise ratio [0011] BD-PSNR Bjontegaard delta PSNR [0012] BD-BR Bjontegaard delta bitrate [0013] ATR Average Time Reduction average encoding time reduction [0014] Scalable Vide...
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IPC IPC(8): H04N19/33H04N19/34H04N19/176H04N19/124H04N19/147
Inventor 徐平平李玮张苏横商敏红
Owner SOUTHEAST UNIV