A parallel realization method of SAD in motion estimation
A technology of motion estimation and implementation method, which is applied in the field of digital video codec, can solve the problems of consuming large hardware resources, the subtraction unit and the addition unit cannot be used at the same time, and cannot be completed in the same clock cycle, so as to shorten the processing time and reduce the Access, the effect of improving reuse efficiency
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[0012] A parallel implementation method of SAD in motion estimation of the present invention will be further described in detail in conjunction with the accompanying drawings.
[0013] The present invention provides a method for parallel implementation of SAD in motion estimation, which is used for inter-frame compression processing of video coding. The method involves a plurality of processing units PE for calculating SAD, and PE calculates the pixel block of a current frame and the reference The absolute value of the pixel difference in the pixel block of the frame, and calculate the sum of the absolute difference SAD of each pixel. Please refer to Fig. 3, in the present invention, each AD unit of PE works simultaneously on the rising and falling edges of the clock, and the specific implementation process is as follows:
[0014] At time t1 (the falling edge of the clock CLK), the image frame data is input, and the reference frame data is the reference block 0 (REF0). After t...
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