Gray-level image processing with weighting factors to reduce fli

Details Gray-level image processing with weighting factors to reduce fli Gray-level image processing with weighting factors to reduce fli

1995-03-27

1997-09-02

Peng, John K.

Television

Image signal processing circuitry specific to television

Gray scale transformation

345147, 358458, 382162, H04N 514

Patent

active

056637721

ABSTRACT:
According to a method and a system of the present invention, a gray-level data is generated from a binary image while reducing the vertical brightness transition, and a display with a reduced flicker is enabled in an interlaced scanning system. A filtering operation is conducted with respect to each of the pixels in a dot matrix by using the data of each pixel and the dot matrix data of the pixel adjacent to the pixel in a vertical direction, thereby generating a gray-level data and writing the data into a frame memory. A display with a reduced flicker may be conducted by transforming the gray-level data into a predetermined set of colors consisting of a foreground color, a background color, and an intermediate color thereof.

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Warnock, Proceeding of the Conference Siggraph'80, pp. 302-307, 1980, "The Display of Characters Using Gray Level Sample Arrays."
Negroponte, Proceeding, Society for Information Display, 1980, "Soft Fonts. "

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