Method for improving video quality and implementing device thereof

A technology of video quality and high bit rate, applied in the field of video quality improvement method and implementation device thereof, to achieve the effect of eliminating smear and improving video quality

Active Publication Date: 2012-05-02
SOLOMON SYSTECH SHENZHEN LTD
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Problems solved by technology

[0003] The purpose of the present invention is to propose a method for improving video quality and its implementation device for the defects of the prior art, so as to solve the problem of improving video image quality at low bit rates

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  • Method for improving video quality and implementing device thereof
  • Method for improving video quality and implementing device thereof
  • Method for improving video quality and implementing device thereof

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Embodiment Construction

[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] Such as figure 1 Said, in the embodiment of the present invention, the method for improving video quality includes step S1: statistical cost function, that is, including the cost function of the most preferred inter-frame mode, the cost function of the intra-frame 16×16 mode and the intra-frame 4× 4-mode cost function.

[0032] S11, get the best macroblock interframe mode and its cost function through the motion estimation module, which is recorded as InterCost(mv, mode e), where mv is the motion vector of the macroblock, and mode is the mode of the macroblock, which may be 16× 16, 16×8, 8×16, 8×4, 4×8, etc.

[0033] S12. Calculate the cost function of the intra-frame 16×16 mode, which is denoted as Intra16x16Cost (I16), where I16 is the ...

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Abstract

The invention discloses a method for improving the video quality and an implementing device thereof. The method has the following implementing steps of: obtaining a cost function InterCast of an inter-frame mode and a cost function Intra16x16Cast and Intra4x4Cast of two intra-frame modes by statistics; selectively entering a high code rate mode judging process according to a current code rate, or calculating a mode weighing punishment factor and entering a low code rate mode judging process; in a high code rate mode, comparing three cost functions and judging a mode decision result into a mode corresponding to the minimum; and in a low code rate mode, comparing InterCast + BSP with another two cost functions and judging a mode decision result into the mode corresponding to the minimum. Due to the application of the technical scheme of the invention, the high image quality can be kept under the condition of high code rate, the smear is effectively eliminated under the condition of low code rate, and the video quality is subjectively improved.

Description

technical field [0001] The invention relates to a video quality adjustment method and device, in particular to a video quality improvement method and a device for realizing video image macroblock mode in the field of video coding. Background technique [0002] At present, in the field of video coding, the mode decision of the macroblock of the video image is an important algorithm component that affects the quality of the final image, and the general algorithm is based on the peak signal-to-noise ratio (abbreviated as PSNR) as the decision object. PSNR is useful for judging universal algorithms, but for low-bit-rate video calls, simply improving PSNR cannot effectively improve video quality. For this reason, in terms of mode decision-making of image macroblocks, finding a better adjustment method to improve video quality is an important problem to be solved urgently in this industry. Contents of the invention [0003] The purpose of the present invention is to solve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/32H04N19/159H04N19/176H04N19/51
Inventor 匡先锋
Owner SOLOMON SYSTECH SHENZHEN LTD
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