FIELD: electronics.
SUBSTANCE: invention relates to image interpolation and, more specifically to interpolation between pixel values of integer pixel units. Device for motion compensation using processor determines a luma reference block for prediction of current block by using a luma motion vector, generating a luma sample of a 2/4-pixel location by applying an 8-tap interpolation filter to luma samples of integer pixel locations. Generating a luma sample of a 1/4- or 3/4-pixel location by applying an interpolation filter to luma samples of integer pixel locations without using generated luma sample of 2/4-pixel location. Processor is also configured to determine a chromatic reference block for prediction of current unit using chromatic motion vector and generating a chroma value of a 4/8-location by applying a 4-tap interpolation filter to chroma values of integer pixel location.
EFFECT: high accuracy of generating fractional pixel units.
3 cl, 62 dwg
