Prediction method and prediction device for video image component
A technology of video image and prediction method, applied in the field of video, can solve the problems of increased cost and high complexity of hardware implementation, and achieve the effect of reducing complexity and improving coding performance
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[0229] pY'[x, y]=(recSamplesL[2x-1, 2y+1]+
[0230] 2*recSamplesL[2x, 2y+1]+recSamplesL[2x+1, 2y+1]+2)>>2,
[0231] where {(x, y)|x=Dx,..., nS+Dx-1; y=-1}
[0232] (2.30.1)
[0233] pY'[x, y]=(recSamplesL[2x-1, 2y]+recSamplesL[2x-1, 2y+1]+
[0234] recSamplesL[2x, 2y]+recSamplesL[2x, 2y+1]
[0235] +recSamplesL[2x+1, 2y]+recSamplesL[2x+1, 2y+1])>>2,
[0236] where {(x,y)|x,y=0,...,nS-1}
[0237] (2.31.1)
[0238] pY'[x, y]=(recSamplesL[2x-1, 2y]+recSamplesL[2x-1, 2y+1]+
[0239] recSamplesL[2x, 2y]+recSamplesL[2x, 2y+1]
[0240] +recSamplesL[2x+1, 2y]+recSamplesL[2x+1, 2y+1])>>2,
[0241] where {(x,y)|x=-1; y=Dy,..., nS+Dy-1} (2.32.1)
[0242] In formula (2.30) to formula (2.32), {(x, y)|x=Dx, ..., nS+Dx-1; y=-1} represents the adjacent sampling point above the current chrominance component image block , and the leftmost sampling point is offset by Dx pixels in the horizontal direction from the origin, and {Dx=0, ±1, ±2, . . . , ±(2*nS)}. When Dx>0, the upper and up...
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