Patent ID: 11877000
Assignee: DOLBY LABORATORIES LICENSING CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. The method of claim 1, wherein performing motion compensation comprises computing

refxSbL=(((xSb−fCurLeftOffset)«4)+refMvLX[0])*hori_scale_fp refxL=((Sign(refxSbL)*((Abs(refxSbL)+128)»8)+xL*((hori_scale_fp+8)»4))+32)»6+(fRefLeftOffset«4)refySbL=(((ySb−fCurTopOffset)«4)+refMvLX[1])*vert_scale_fp refyL=((Sign(refySbL)*((Abs(refySbL)+128)»8)+yL*((vert_scale_fp+8)»4))+32)»6+(fRefTopOffset«4)

wherein hori_scale_fp denotes the horizontal scaling factor, vert_scale_fp denotes the vertical scaling fcator, fCurLeftOffset denotes the left-offset adjustment, fCurTopOffset denotes the top-offset adjustment, fRefLeftOffset denotes the reference area left offset, fRefTopOffset denotes the reference area top offset, and (refxSbL, refySbL) and (refxL, refyL) are luma locations pointed to by a motion vector (refMvLX[0], refMvLX[1]) given in 1/16-sample units.