Patent ID: 9402087
Filing Date: 2016-07-26
CPC Classification: H04N

Claim Text:
1. A picture encoding method that encodes picture information for each area by selecting a reference picture from picture information of a plurality of frames that have been previously encoded and generating a prediction picture, the method comprising: a reference motion vector setting step that sets a correspondence relation between a plurality of motion vectors that have been stored in advance and reference picture designation information that designates a reference picture and a motion vector using layer information on a layer to which a frame to be encoded belongs among layers that are provided for temporal scalable encoding, multi-view encoding, or stereo encoding, a motion vector corresponding to a reference picture of a layer that is different from a predetermined layer being includable in motion vectors stored for the predetermined layer; a reference picture selection step that selects the reference picture; a reference picture designation encoding step that encodes the reference picture designation information that designates the reference picture instead of independently encoding reference picture information and a motion vector; a motion vector selection step that selects a motion vector corresponding to the reference picture designation information that designates the selected reference picture from the plurality of motion vectors that have been stored in advance; a prediction picture generation step that generates a prediction picture from the reference picture using the motion vector selected by the motion vector selection step; and a differential encoding step that encodes a difference between the picture information of the present area and the prediction picture.