Motion vector detector and video coder

Details Motion vector detector and video coder Motion vector detector and video coder

1997-08-01

1999-07-27

Lee, Richard

Television

Bandwidth reduction system

Data rate reduction

348409, 348699, H04N 732

Patent

active

059299134

ABSTRACT:
By a motion vector correction circuit 313, a motion vector minimizing the sum of a value of the quadratic error function having a motion vector as a variable and the motion vector changing amount in neighboring blocks is determined, and it is linearly interpolated by a motion vector interpolation circuit 314 to obtain a motion vector in a pixel unit, and a motion compensated picture is generated, and a differential picture of the current frame and this motion compensated picture is divided into sub-bands by a video transform circuit 304, and only the information in the region of the larger differential signal energy is coded.

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