CNN based color constancy algorithm

Color constancy (CC) is a perceptional phenomena in which living species, capable of color vision, perceive object color apart from the spectral distribution of light applied to illuminate the objects. The algorithm that can recover objects' original color and display them as if they were illuminated by spectrally even (white) light is called the CC algorithm. In contrast to other solutions our approach offers on-line possibilities in applications as its operation needs consist of mainly local interactions that are well suited to the architecture of cellular neural/non-linear networks (CNN). In a recent paper, we offered a brief survey of common CC approaches, introduced the principles of our CC algorithm, compared ACE4K on-chip results versus simulation, examined the robustness of our algorithm and outlined a newly developed setup for reliable color image recording.

[1]  A. Rodriguez-Vazquez,et al.  A 64/spl times/64 CNN universal chip with analog and digital I/O , 1998, 1998 IEEE International Conference on Electronics, Circuits and Systems. Surfing the Waves of Science and Technology (Cat. No.98EX196).

[2]  Ákos Zarándy,et al.  CNN-based models for color vision and visual illusions , 1999 .

[3]  Alessandro Rizzi,et al.  Color appearance approach to image database visual retrieval , 1999, Electronic Imaging.

[4]  Brian V. Funt,et al.  Neural Network Colour Constancy and Specularly Reflecting Surfaces , 1999 .

[5]  G D Finlayson,et al.  Spectral sharpening: sensor transformations for improved color constancy. , 1994, Journal of the Optical Society of America. A, Optics, image science, and vision.

[6]  Graham D. Finlayson,et al.  Color in Perspective , 1996, IEEE Trans. Pattern Anal. Mach. Intell..

[7]  Tamás Roska,et al.  The CNN universal machine: an analogic array computer , 1993 .

[8]  E. Land,et al.  Lightness and retinex theory. , 1971, Journal of the Optical Society of America.

[9]  Glenn Healey,et al.  The Illumination-Invariant Recognition of 3D Objects Using Local Color Invariants , 1996, IEEE Trans. Pattern Anal. Mach. Intell..

[10]  John J. McCann,et al.  Retinex in Matlab , 2000, CIC.

[11]  A. Hurlbert,et al.  Perception of three-dimensional shape influences colour perception through mutual illumination , 1999, Nature.