Video decoding method

摘要

A method of decoding videos comprises the steps of performing, in respect of a decoding objective area of decoding objective frame, a motion search by using images of plural frames finished with decoding and deciding, on the basis of the result of the motion search, whether an image of the decoding objective area is to be generated through an interpolation process or a decoded image is to be generated through motion compensation using data included in an encoding stream.

主权项

1. A video decoding method of decoding an encoded video stream comprising the steps of:
receiving a motion search direction decision flag in the encoded video stream; searching, with respect to a decoding objective area of a decoding objective frame, for a motion vector according to a motion search direction specified by the motion search direction decision flag using a plurality of decoded images of a plurality of decoded frames where the decoding objective frame is an interpolation frame positioned where two of the plurality of decoded frames are linearly connected with the decoding objective area, and an objective pixel included in said decoding objective area is positioned between and on a same straight line in a frame of space and time as each of plural pixels positioned on said decoded images of plural decoded frames; and deciding, on the basis of a result of said motion vector search, whether an image of said decoding objective area is to be generated through an interpolation process in accordance with the motion search direction or a decoded image is to be generated through motion compensation using data included in the encoded video stream.