Method and apparatus of encryption of optical images
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United States of America Patent
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Oct 4, 1988
Issued Date -
N/A
app pub date -
Apr 1, 1987
filing date -
Apr 18, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of encoding an optical image comprises: converting the optical iamge to an image grid comprised of an image matrix of pixels each having at least two possible intensity values; providing a master grid comprised of a master matrix of pixels each having at least two possible intensity values; and transmitting, for each pixel location of the image matrix, a pixel intensity value representing the intensity value of the master matrix at the corresponding location, its complement, or a random intensity value, depending on the intensity value of the pixel in the image matrix at the corresponding location. Also described is an apparatus for carrying out the above encoding method.
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