Image sequence encoding device and area extracting device

Details Image sequence encoding device and area extracting device Image sequence encoding device and area extracting device

1998-01-16

1999-05-25

Tung, Bryan

Television

Bandwidth reduction system

Data rate reduction

348700, 382164, H04N 732, H04N 730

Patent

active

059073616

ABSTRACT:
In an image sequence encoding device, a specified area and a motion area are extracted from an input image and encoded by allocating a relatively increased amount of codes to the specified area and a relatively reduced amount of codes to the motion area to improve the quality of the specified area of the image. The image sequence encoding device is provided with a specified area extracting portion connected to a frame memory to extract a specified area from an input image; a motion area extracting portion connected to a motion detecting portion to extract a motion area according to a magnitude of motion vectors and a specified area of a preceding frame; an encoding control portion connected to a buffer memory; a specified area extracting portion and a motion extracting portion to control quantizing and encoding process.

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