Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1991-04-19
1992-10-13
Brinich, Stephen
Facsimile and static presentation processing
Static presentation processing
Attribute control
358455, 358 80, H04N 146
Patent
active
051555891
ABSTRACT:
Methods and apparatus for decomposing a set of complementary color signals that form a color enhanced image into four or five color maps of an image, for storing said four or five color maps on a sheet of black and white film, and for reconstructing color images from the black and white film images. An image that has been color enhanced in selected regions with color added to depict a variable characteristic that is color independent so that changes in that chracteristic can be determined is decomposed into four or five color constituent maps. The decomposition is performed on an image that is presented electronically as three complementary color bytes, or analog equivalents thereof, for each pixel with the value encoded in each byte being the intensity of that complementary color at that pixel of the image. Also disclosed is the storing on black and white film the constituent parts of a composite color image having a plurality of parts, e.g. four or five colors. This is done by recording the pixel intensity value of each of the plurality of parts for each pixel location in the composite image as a plurality of separate images on a single sheet of black and white film. Finally, there is disclosed the capability to reconstruct a color image from the four or five constituent image portions recorded on black and white film by the selective illumination of each of those image portions and the focusing of the light that passes through those image portions. White light is used to illuminate the grey scale and black spot images and light having a color that corresponds to the color information of the corresponding one of the three complementary color iamges is used to illuminate the other portions of the film. The system provides a number of advantages, including providing an "enhanced grey scale" image, which can provide an advantageous diagnostic tool.
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