Research on applications of optical wavelet transform in high-speed photograph

Tao Wang; Dongmei Li; Chunkuang Tao; Haiquan Shi

doi:10.1117/12.725438

29 January 2007 Research on applications of optical wavelet transform in high-speed photograph

Tao Wang, Dongmei Li, Chunkuang Tao, Haiquan Shi

Proceedings Volume 6279, 27th International Congress on High-Speed Photography and Photonics; 62794P (2007) https://doi.org/10.1117/12.725438
Event: 27th International congress on High-Speed Photography and Photonics, 2006, Xi'an, China

Abstract

Image and data are always needed to be processed and analyzed at real time during high-speed photograph, so high processing speed is required. As the optical wavelet transform utilizes the parallel computation of optical elements, it has a high transform speed. Hence it can be used for image processing and analysis during high-speed photograph. The light-path structure and principle of optical wavelet transform is introduced in this paper. It is realized by using 4f optical information processing system. And the methods for realizing pattern recognition, image feature extraction, image edge enhancement etc. are given. Specially, the requirements on light source, light-path structure, optical elements and filter of optical system are analyzed when optical wavelet transform is used for image compression. And some improved measurements are put forward according to present problems. Firstly, the merits of using white light information processing system for image compression is analyzed. Secondly, adopt liquid crystal light valve and spatial light modulator to strengthen flexibility and practicability. Thirdly, the method of determining focuses of lens and how to use Talbot effect to locate the object plane and spectrum plane are given. Finally, the use of reflecting 4f system is put forward to decrease chromatic aberration and noise in optical wavelet transform. And we have obtained some experimental results which are good for further research.

Citation Download Citation

Tao Wang, Dongmei Li, Chunkuang Tao, and Haiquan Shi "Research on applications of optical wavelet transform in high-speed photograph", Proc. SPIE 6279, 27th International Congress on High-Speed Photography and Photonics, 62794P (29 January 2007); https://doi.org/10.1117/12.725438

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KEYWORDS

Image compression

Optical filters

Wavelet transforms

Fourier transforms

Image processing

High speed photography

Image quality

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