Influence of noise on detection accuracy of joint transform optical correlator

Qi Li; Zhihai Xu; Huajun Feng; Peng Ge; Yueting Chen; Lianghui Li

doi:10.1117/12.871641

10 November 2010 Influence of noise on detection accuracy of joint transform optical correlator

Qi Li, Zhihai Xu, Huajun Feng, Peng Ge, Yueting Chen, Lianghui Li

Proceedings Volume 7850, Optoelectronic Imaging and Multimedia Technology; 78502M (2010) https://doi.org/10.1117/12.871641
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

Joint transform optical correlator (JTOC) is an effective motion detection tool, and the quality of spectrogram has great influence on the detection accuracy. In this paper, we constructed simulation software for JTOC and used two images with known displacement as the experimental objects; we gradually increased the noise in the spectrogram, and then compared the detection data under noise conditions with the real data to test the degree of influence of the noise on the detection accuracy. The test results show that when the noise variance is small, the influence of noise is very little; when the noise variance is more than 0.8, the influence of noise increases gradually; and when the noise variance exceeds 1.29, the noise will directly cause failure of joint transform optical correlator.

Citation Download Citation

Qi Li, Zhihai Xu, Huajun Feng, Peng Ge, Yueting Chen, and Lianghui Li "Influence of noise on detection accuracy of joint transform optical correlator", Proc. SPIE 7850, Optoelectronic Imaging and Multimedia Technology, 78502M (10 November 2010); https://doi.org/10.1117/12.871641

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KEYWORDS

Joint transforms

Optical correlators

Motion detection

Sensors

Image sensors

Modulation

Image processing

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