TOCM digital color photography

Baoying Zhang; Guoguang Mu; Zhiliang Fang; Hui Fang; Yong Yang

doi:10.1117/12.837656

24 November 2009 TOCM digital color photography

Baoying Zhang, Guoguang Mu, Zhiliang Fang, Hui Fang, Yong Yang

Proceedings Volume 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology; 751317 (2009) https://doi.org/10.1117/12.837656
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

In this paper, total optical color modulator (TOCM) digital color photography is presented. TOCM has the character of multi-wave superposed in spatial domain and separated in frequency domain. If TOCM is close-contacted with the image plane of a black-and-white (B&W) CCD, the encoding B&W CCD is formed. Image from the encoding B&W CCD are digital encoded by the TOCM. The decoded color image can be obtained by computer program. The program includes four main steps. The first step is Fourier transforming of the encoded image. The second step is filtering the spectra of the first and zero order in frequency domain. The third is inverse Fourier transforming of the filtered spectra. The last is melting the image with zero order. Then the digital color image will be shown on the display of the computer. The experiment proves that this technique is feasible. The principle of encoding color information in B&W image can be applied to color-blind sensors to get digital color image. Furthermore, it can be applied to digital multi-spectra color photography.

Citation Download Citation

Baoying Zhang, Guoguang Mu, Zhiliang Fang, Hui Fang, and Yong Yang "TOCM digital color photography", Proc. SPIE 7513, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Imaging and Process Technology, 751317 (24 November 2009); https://doi.org/10.1117/12.837656

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KEYWORDS

Digital photography

Photography

Computer programming

Digital imaging

Charge-coupled devices

Digital filtering

Optical filters

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