Image Processing

Image processing apparatus in which output pixels of an output image are generated from one or more input images using a set of motion vectors having a sub-pixel accuracy, the apparatus comprising:

• a motion vector allocator for allocating motion vectors in the set to pixels of the output image, the motion vector allocator being arranged to compare a current output pixel with test image areas pointed to by motion vectors in the set to detect a most suitable motion vector for the current output pixel, the motion vector allocator comprising a spatial filter for comparing the current output pixel and a test image area to a sub-pixel accuracy;
• and
• a pixel generator for generating the output pixels, the pixel generator comprising a spatial filter for generating an output pixel value at a required pixel position to a sub-pixel accuracy;
• in which the spatial filter of the motion vector allocator has fewer filter taps than the spatial filter of the pixel generator.