Tonal conversion method for pictures
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United States of America Patent
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May 8, 1990
Grant Date -
N/A
app pub date -
May 5, 1989
filing date -
May 13, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Upon production of a reproduced picture from an original picture having a standard or non-standard, tonal conversion of the original picture is conducted based on pictorial information from the original picture. The information is processed in such a way that the base density information datum of a desired control point on the original picture and the halftone intensity at a corresponding control point on the reproduced picture are correlated in accordance with a specific conversion formula.
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