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Your search keyword '"Zolliker, Peter"' showing total 2 results
Start Over Author "Zolliker, Peter" Topic color perception Database MEDLINE
2 results on '"Zolliker, Peter"'

1. Image-dependent gamut mapping as optimization problem.

Author

Giesen J, Schuberth E, Simon K, Zolliker P, and Zweifel O

Subjects
Computer Graphics, Humans, Information Storage and Retrieval methods, Reproducibility of Results, Sensitivity and Specificity, Task Performance and Analysis, Algorithms, Color, Color Perception physiology, Colorimetry methods, Image Enhancement methods, Image Interpretation, Computer-Assisted methods, Imaging, Three-Dimensional methods
Abstract

We explore the potential of image-dependent gamut mapping as a constrained optimization problem. The performance of our new approach is compared to standard reference gamut mapping algorithms in psycho-visual tests.

Published
2007
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2. Retaining local image information in gamut mapping algorithms.

Author

Zolliker P and Simon K

Subjects
Artificial Intelligence, Humans, Reproducibility of Results, Sensitivity and Specificity, Algorithms, Color, Color Perception physiology, Colorimetry methods, Image Enhancement methods, Image Interpretation, Computer-Assisted methods, Information Storage and Retrieval methods
Abstract

Our topic is the potential of combining global gamut mapping with spatial methods to retain the percepted local image information in gamut mapping algorithms. The main goal is to recover the original local contrast between neighboring pixels in addition to the usual optimization of preserving lightness, saturation, and global contrast. Special emphasis is placed on avoiding artifacts introduced by the gamut mapping algorithm itself. We present an unsharp masking technique based on an edge-preserving smoothing algorithm allowing to avoid halo artifacts. The good performance of the presented approach is verified by a psycho-visual experiment using newspaper printing as a representative of a small destination gamut application. Furthermore, the improved mapping properties are documented with local mapping histograms.

Published
2007
Full Text
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