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AssigneePanasonic Intellectual Property Corporation of America
InventorsMasato OHKAWA, Hideo SAITOU, Takahiro NISHI, Tadamasa TOMA
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An encoder which performs frequency transform on a current block to be encoded in an image includes: a size determiner which determines whether or not the current block has a size smaller than or equal to a threshold size; a basis selector which selects a basis for the current block from among a plurality of frequency transform bases when the current block has a size larger than the threshold size; and a frequency transformer which (i) transforms the current block using a fixed frequency transform basis when the current block has a size smaller than or equal to the threshold size and (ii) transforms the current block using a basis selected by the basis selector when the current block has a size larger than the threshold size.
An encoder which performs frequency transform on a current block to be encoded in an image, the encoder comprising:
An encoding method for performing frequency transform on a current block to be encoded in an image, the encoding method comprising:
A decoder which performs inverse transform on a current block to be decoded in an image, the decoder comprising:
A decoding method for performing inverse frequency transform on a current block to be decoded in an image, the decoding method comprising:
Dependencies are inferred from the claim text.