DECODING DEVICE AND DECODING METHOD

摘要

The present technology relates to a decoding device and a decoding method capable of reducing the amount of information relating to information specifying a reference image. A reception unit receives inter_ref_pic_set_prediction_flag representing whether reference image specifying information specifying a reference image, which is used for generating a predicted image, of a prior image that is an image prior to a current coding image in coding order that is transmitted in a case where the current coding image is an image other than a first image of a GOP (Group of Picture) is used as the reference image specifying information of the current coding image. The present technology, for example, can be applied to a decoding device of an HEVC (High Efficiency Video Coding) system.

主权项

1. A decoding device comprising:
a reception unit that receives reference information representing whether reference image specifying information specifying a reference image, which is used for generating a predicted image, of a prior image that is an image prior to a current coding image in coding order that is transmitted in a case where the current coding image is an image other than a first image of a GOP (Group of Picture) is used as the reference image specifying information of the current coding image; a reference image setting unit that generates the reference image specifying information of a current decoding image based on the reference information in a case where the reference information is received by the reception unit and generates the reference image specifying information of the current decoding image based on reference information representing that the reference image specifying information of the prior image is not used as the reference image specifying information of the current coding image in a case where the reference information is not received by the reception unit; and a predicted image generation unit that generates a predicted image by using the reference image that is specified by the reference image specifying information generated by the reference image setting unit.