Motion image processing method and motion image processor
A technology for moving images and processing methods, which is applied in image communication, television, electrical components, etc., can solve the problems of inability to compress multiple encoded frames, and cannot save the memory overhead of motion prediction, and achieve the effect of saving memory overhead.
Inactive Publication Date: 2012-06-27
NOVATEK MICROELECTRONICS CORP
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Furthermore, traditional motion image processors can only compress a single coded frame but cannot compress multiple coded frames at the same time, and cannot save the memory overhead of motion prediction in the part of reading and writing a large amount of data
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[0054] In the process of moving image processing, each image in the moving image will first be decomposed into multiple macroblocks, and the schematic diagram of the decomposition is as follows figure 1 As shown, the image 100 can be decomposed into N macroblocks b0, b1, . . . bN-1, and the order of decomposition is the raster order. On the other hand, the entire motion image processing program can be disassembled into multiple stages, such as figure 2 Shown is a step-by-step diagram of the main program of moving image processing. The motion image processing main procedure 200 can be divided into three stages: motion prediction 202 , DCT 204 and variable length coding 206 . Accordingly, the input data DataIn can sequentially input the macroblocks b0, b1, .
[0055] In the process of moving image processing, the function of motion prediction is to define the range of the index window in the reference frame according to the position of the macroblock in the frame to be coded,...
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The invention discloses a motion image processing method and a motion image processor. The motion image processor comprises processing devices, and is connected with a buffer unit. The motion image processor reads a plurality of frames to be coded and a plurality of index windows from the buffer unit, and performs motion estimation on a plurality of macro blocks with the processing devices, wherein the plurality of macro blocks share the same position in the plurality of frames to be coded; and the data of the plurality of frames to be coded is independent. As the plurality of processing devices with pipelines are adopted in terms of the design of the motion image processor, and can effectively and simultaneously execute a single function in a unit time respectively, the motion image processor and the motion image processing method can save memory overhead in the motion estimation and simultaneously process the plurality of coded frames.
Description
technical field [0001] The invention relates to a moving image processing method and a moving image processor, in particular to a moving image compression method and a moving image compression processor. Background technique [0002] In the traditional moving image processing method, each picture (frame) in the moving image will first be decomposed into multiple macroblocks (Macro Block, MB), and the whole compression program will be disassembled into multiple stages (stage), where each The first stage is responsible for processing different compression procedures, such as motion estimation (motion estimation), discrete cosine transform (discrete cosine transform, DCT), variable length coding (variable length coding, VLC), reconstruction (reconstruction) and so on. Accordingly, the motion picture processor can be designed with multiple processing devices (processes sor), each processing device is responsible for each stage. Furthermore, in the design of the moving image pro...
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IPC IPC(8): H04N7/26H04N7/50H04N19/61
Inventor 张育玮黄朝宗
Owner NOVATEK MICROELECTRONICS CORP