Patent ID: 9749623
Date: 2017-08-29
CPC Classifications: H04N

Claim:
1. A moving picture coding method for coding an input image to generate a bit stream, the method comprising: performing context adaptive binary arithmetic coding in which a variable probability value is used on, from among multiple types of sample adaptive offset (SAO) information used for SAO that is a process of assigning an offset value to a pixel value of a pixel included in an image generated by coding the input image, sao_offset indicating an absolute value of the offset value; and continuously performing bypass arithmetic coding in which a fixed probability value is used on, from among the multiple types of the SAO information, (i) sao_band_position indicating a range of pixel values to which the SAO is applied and (ii) sao_offset_sign indicating whether the offset value is positive or negative, the sao_band_position being coded after the sao_offset_sign is coded, wherein, in the bitstream, the sao_band_position and the sao_offset_sign, which are coded using the bypass arithmetic coding, are placed after the sao_offset, which is coded using the context adaptive binary arithmetic coding, and wherein a variable probability is not used in the bypass arithmetic coding.