Moving picture encoding method and decoding method with motion vectors of blocks adjacent to target blocks and motion vectors at a same position to target blocks in other frames
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United States of America Patent
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Nov 28, 2017
Issued Date -
N/A
app pub date -
Sep 16, 2014
filing date -
Jul 15, 2002
priority date (Note) -
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Abstract
Decoding method for a moving picture included in a coded stream, including: determining whether a prediction mode (PM) of a target block (TB) is a PM in which motion vector (MV) is not transmitted from an encoding to decoding side, based on coded stream included information; and executing a decoding process when the PM of the TB is determined as the PM in which MV is not transmitted from an encoding to decoding side, wherein a calculation method of a MV used in the second step is selected among plural calculation methods including at least: a first method to select one MV among MVs used in plural adjacent blocks adjacent to the TB; and a second method to calculate a MV based on a MV used in a block that is located at the same position as the TB in another frame positioned backward of a frame including the TB.
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