Patent ID: 9277226
Filing Date: 2016-03-01
CPC Classification: H04N

Claim Text:
1. A decoding method for decoding a signal of an intra-coded image, the decoding method comprising: a determination step of determining whether a partial area of the image has been converted in an up-down symmetry conversion mode to flip the partial area of the image vertically or in a right-left symmetry conversion mode to flip the partial area of the image horizontally with reference to information sent together with the signal of the image; and a decoded image creation step of creating a decoded image by executing conversion associated with a conversion mode determined in the determination step after intra-coded predicting, wherein the information includes information indicating a direction of the flip of the partial area of the image and information indicating a position of the flipped partial area, wherein a size of the flipped partial area is larger than a block unit, and wherein the information indicating the direction of the flip includes vertical flipping.