Video coding and video decoding apparatus for reducing an alpha-

Details Video coding and video decoding apparatus for reducing an alpha- Video coding and video decoding apparatus for reducing an alpha-

Filed on

1996-09-30

Date issued

1999-03-16

Examiner

Chin, Tommy P.

Patent Class

Television

SubClass

Bandwidth reduction system

SubSubClass

Data rate reduction

Other Related Categories

348423, 348441, 3488453, H04N 712

Type

Patent

Status

active

Patent number

058836780

Description

ABSTRACT:
A video encoding apparatus is provided with a resolution converting section, an encoding section, and a transmitting section. The resolution converting section enlarges or reduces a binary picture which represents the shape of an object. The encoding section encodes a binary picture reduced by the resolution converting section. The reduction ratio used by the resolution converting section is encoded, and the transmitting section transmits this encoded reduction ratio along with encoded data on the binary picture. The amount of encoded data produced from the encoding section is controlled by changing the enlargement/reduction ratio used by the resolution converting section.

REFERENCES:
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patent: 5231491 (1993-07-01), Holoch
patent: 5233422 (1993-08-01), Kondo et al.
patent: 5274453 (1993-12-01), Maeda
patent: 5303044 (1994-04-01), Richards
patent: 5363213 (1994-11-01), Coward et al.
patent: 5444492 (1995-08-01), Kihara
patent: 5528704 (1996-06-01), Parker et al.
patent: 5638130 (1997-06-01), Linzer
A.K. Jain. "Fundamentals of Digital Image Processing", Prentice Hall, Chapter 11, Section 11.9, (pp. 548-511), 1989.

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