Image processing method for processing an image signal different

Details Image processing method for processing an image signal different Image processing method for processing an image signal different

1986-03-12

1988-03-15

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 80, 358280, 358284, H04N 146, H04N 140, G03F 308

Patent

active

047316624

ABSTRACT:
The present disclosure relates to a method of processing an image signal in which one image characteristic, such as luminance density or color saturation, may have a range incapable of reproduction by an output device due to limitations inherent in such device. In the disclosed method the range of the image characteristic for one image frame is detected and compared to the range that the output device can reproduce. Depending on the result of the comparison, the input image signal is processed differently; for example, the image signal may be converted so that the range of the image characteristic is shifted or compressed, or it may not be converted at all.

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Wong, K. Y., "Adaptive Contrast Ranging for Images", IBM Technical Disclosure Bulletin, vol. 18, No. 3, Aug. 1975, pp. 914-917.

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