Integrated circuit interpolation filtering method, image encoding method, image decoding method, interpolation filtering device, and program,

摘要

Interpolation filtering method, the weighting coefficient determination for determining the weighting factors pixel selection step of selecting from the image a plurality of pixels used for interpolation in the interpolation target pixel and (S33), corresponding to each the selected pixels in the pixel selection step interpolation step using a weighting factor determined step and (S34), the weighting coefficient determining step (S34), and calculates the pixel value of the interpolation target pixel by the weighted sum of pixel values ​​of a plurality of pixels and (S35) including. Then, the weighting coefficient determining step in (S34), if it belongs to a neighboring block different from the target block pixel of one of a plurality of pixels belongs interpolation target pixel, than if the pixel belongs to the target block, and the pixel I to reduce the weighting factor of.