Share Email Print
cover

Proceedings Paper

Optoelectronic correlator based on ATD vector vision model with image encoding method for chromatic image recognition
Author(s): Chunmin Wang; Chulung Chen; Tiengsheng Lin; Tengwen Chen
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

In this paper, we use the ATD color human vision model instead of the traditional RGB color model for polychromatic pattern recognition. Here we utilize the Mach-Zehnder joint transform correlator to be the optical pattern discrimination configuration. The ATD color human vision model is proposed to be the interpretation of human's cone mechanisms. The ATD represents the nonopponent achromatic system, the tritanopic system, and the deuteranopic system, respectively. It is more close to human eye's vision. Besides, we also use the minimum average correlation energy approach based on the Lagrange multipliers and image encoding technique to yield sharp correlation peak and to achieve the distortion invariance. The image encoding method can reduce the requirement of pixels number in RLCSLM on output plane effectively. Therefore, an encoded image recombined by the three vectors of ATD has been utilized in our input plane. The minimum average correlation energy approach is designed to deal with various distortions and to reduce the correlation sidelobe intensity. From these results, we discover that the recognition ability based on ATD vector model is better than that based on RGB color model generally. Subsequently, we choose one target from the 25 images set to estimate the discrimination ability in rotated distortion and noisy distortion. From the numerical results we realize that the recognition ability based on ATD color vision model is accepted.

Paper Details

Date Published: 26 January 2009
PDF: 9 pages
Proc. SPIE 7156, 2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments, 715611 (26 January 2009); doi: 10.1117/12.810788
Show Author Affiliations
Chunmin Wang, Yuan Ze Univ. (Taiwan)
Chulung Chen, Yuan Ze Univ. (Taiwan)
Tiengsheng Lin, Yuan Ze Univ. (Taiwan)
Tengwen Chen, Yuan Ze Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7156:
2008 International Conference on Optical Instruments and Technology: Optical Systems and Optoelectronic Instruments
Yunlong Sheng; Yongtian Wang; Lijiang Zeng, Editor(s)

© SPIE. Terms of Use
Back to Top