Computer graphics processing and selective visual display system – Display peripheral interface input device – Light pen for fluid matrix display panel
Patent
1997-08-26
1999-08-24
Liang, Regina
Computer graphics processing and selective visual display system
Display peripheral interface input device
Light pen for fluid matrix display panel
348672, G09G 506
Patent
active
059430451
ABSTRACT:
An image file for recording natural images, a generation method of the image file and an image display apparatus for displaying image data from this image file. The image file includes image data obtained by digitizing an original, and conversion tables for separating the color tones of the original into R, G and B and converting the changes of the color tones to input luminance-v-output luminance. The image display apparatus controls a color look-up table by the conversion tables read out from the image file, and displays the image data read out from the image file. The generation method of the image file includes reading development data by reading the first original by a scanner, generating a histogram between luminance and appearance frequency for each of R, G and B, integrating the appearance frequency to obtain a first cumulative histogram, generating similarly the second cumulative histogram for each of R, G and B of the final original to obtain conversion tables for the second histogram with the first cumulative histogram being the reference, and continuously displaying the color tones of a still image by using the image data and the conversion tables of the first original.
REFERENCES:
patent: 5241386 (1993-08-01), Tsuji et al.
patent: 5294986 (1994-03-01), Tsuji et al.
patent: 5315389 (1994-05-01), Izawa et al.
Hamada Nagaharu
Honda Koichi
Ikeshoji Nobuo
Kamiuchi Toshiro
Yamakawa Hiromi
Hitachi , Ltd.
Liang Regina
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