Complexity reduction for 1/8-pel interpolation

摘要

The present invention relates to a method for interpolation of sub-samples for encoding and decoding an image signal and to corresponding apparatuses therefore. In particular, the 1/8-pel positions are interpolated by filtering only the half-pel positions and the full-pel positions but not the quarter-pel positions. This provides higher uniformity of filtering and reduces the complexity of such an interpolation filtering.