Patent ID: 9432697
Filing Date: 2016-08-30
CPC Classification: H04N

Claim Text:
1. A video decoding method comprising: determining whether a current block is a fist block with a size that is not a minimum size (4×4) or a second block with a size that is a minimum size (4×4); when the current block is the second block, obtaining, from a bitstream, information indicating whether the current block is inverse-transformed or not, wherein the information is not signaled for the first block and is signaled for the second block; performing a dequantization on residual coefficients relating to the current block; obtaining a residual image by performing, based on the information indicating whether the current block is inverse-transformed or not, an inverse-transform on dequantized residual coefficients, the inverse-transform being performed using a discrete cosine transform (DCT); and generating a reconstruction image using the residual image and a prediction image resulting from performing a motion compensation.