Color transformation look-up table
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United States of America Patent
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-
May 8, 2001
Grant Date -
N/A
app pub date -
Sep 30, 1998
filing date -
Sep 30, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A color transformation look-up table is provided, which is to be referred to when image signals for a non-self-luminous displaying medium are to be transformed into image signals for a self-luminous displaying medium such that appearances of perceived colors may become identical between images displayed on the two displaying media. The look-up table includes a function for transforming a dynamic range of the image signals for the non-self-luminous displaying medium into a dynamic range of the image signals for the self-luminous displaying medium such that a range of brightness of an image, which the non-self-luminous displaying medium can display, may become approximately identical with a range of brightness of an image, which the self-luminous displaying medium can display. The look-up table also includes a function for carrying out signal transformation in accordance with a chromatic adaptation model such that the appearances of perceived colors may become identical between the images displayed on the two displaying media.
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