Inversion of color device models

Details Inversion of color device models Inversion of color device models

2006-04-07

2010-12-14

Chen, Wenpeng (Department: 2624)

Image analysis

Color image processing

Reexamination Certificate

active

07853073

ABSTRACT:
A method and apparatus for inverting a color device model. A systematic color device model inversion process restarts a local iterative root finding process with new seeds that are adaptive to the last found solution. Because of the relative simplicity of the logic used, it is more robust and makes less assumptions about the smoothness of the forward model. It is also computationally inexpensive, because a reasonably good seed is chosen from the seed matrix using a fast calculation of distance, instead of running each seed in the seed matrix through the iterative root finding process. In the worst case, including the initial run, N+1 runs of the local iterative root finding process are needed to invert an input point, with N being the number of additional, a posteriori seeds generated.

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patent: 2002/0105659 (2002-08-01), Rozzi
patent: 2003/0147088 (2003-08-01), Kulkarni

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