Method and apparatus for adaptive color characterization and cal

Details Method and apparatus for adaptive color characterization and cal Method and apparatus for adaptive color characterization and cal

1992-03-23

1994-11-08

Teska, Kevin J.

Boots, shoes, and leggings

364526, 358512, 358519, H04N 1702, H04N 973

Patent

active

053633180

ABSTRACT:
A system and a method in which channel independent linear transfer functions or calibration curves for color devices such as printers, scanners and displays are individually created. The calibration curves are created using a low cost light intensity sensor. Scaling constants are determined and desired linear aim response curves are scaled together to maintain a desired color balance. The color saturation effects are also removed by scaling or normalizing to some maximum input drive level that does not saturate any of the colors. The characterization curves are rotated about the desired linear aim response curves to create compensation curves for each the characterization curves adapted to the particular device response characteristics. The dynamic range maximized, linearized, color balanced and saturation compensation curves are loaded into conversion tables which convert input values into the appropriate output values.

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