Efficient representation of texture for gray scale alpha maps

Details Efficient representation of texture for gray scale alpha maps Efficient representation of texture for gray scale alpha maps

1996-11-08

1999-11-30

Au, Amelia

Image analysis

Image compression or coding

Contour or chain coding

382237, 382266, G06K 936, G06K 948

Patent

active

059956712

ABSTRACT:
A method for compressing the bit data of an alpha mask image frame composed of an array of pixels having bit data indicative of a level of brightness includes selecting a modifying function identifier which represents a mathematical transformation, applying a threshold function to the alpha mask image frame to generate a binary image frame, and encoding the binary image frame and the modifying function identifier for transmission. The method may include receiving an encoded signal containing the binary image frame and the modifying function identifier, decoding the encoded signal to extract the binary image frame and the modifying function identifier, selecting the mathematical transformation represented by the modifying function identifier, and then transforming the bit data of at least one pixel in accordance with the mathematical transformation.

REFERENCES:
patent: 4156880 (1979-05-01), Yamada
patent: 4668995 (1987-05-01), Chen et al.
patent: 4873515 (1989-10-01), Dickson et al.
patent: 5122873 (1992-06-01), Golin
patent: 5185808 (1993-02-01), Cok
patent: 5262856 (1993-11-01), Lippman et al.
patent: 5377014 (1994-12-01), Knauer et al.
patent: 5598215 (1997-01-01), Watanabe
patent: 5625417 (1997-04-01), Lee
patent: 5737449 (1998-04-01), Lee
Wang et al., "Applying Mid-level Vision Techniques for Video Data Compression and Manipulation", Feb. 1994, pp. 1-12.

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