Patent ID: 9497458
Filing Date: 2016-11-15
CPC Classification: H04N

Claim Text:
1. An image coding method for coding an image, the method comprising: obtaining first information and second information from a current signal to be coded, the first information identifying at least one reference picture list used in inter prediction of the image out of a plurality of reference picture lists, the second information identifying at least one reference picture used in the inter prediction of the image out of reference pictures included in the at least one reference picture list identified by the first information; mixing the first information and the second information to generate a mixed signal; calculating a maximum variation range of the mixed signal based on a total number of the reference pictures included in the at least one reference picture list, the maximum variation range indicating a total number of possible values of the mixed signal; selecting a variable-length coding table according to the maximum variation range of the mixed signal; and variable-length coding the mixed signal using the selected variable-length coding table.