Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1984-05-21
1988-03-01
Britton, Howard W.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358280, 358283, 358294, H04N 140
Patent
active
047290358
ABSTRACT:
An image processing apparatus capable of varying the method of binary encoding and processing in accordance with the content of the image, such as black-and-white image versus an image with intermediate tonal rendition. The image content is identified by detecting the maximum and minimum values of mutually neighboring plural pixels, and comparing the maximum value with a first reference value, the minimum value with a second reference value, and the difference between the maximum and minimum values with a third reference value.
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Britton Howard W.
Canon Kabushiki Kaisha
Peng John K.
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