Speckle reduction of kinoform reconstruction by utilizing the 2&#960; ambiguity of image phase differences

Shiyuan Yang; Bhupendra Bimal Chhetri; Seiichi Serikawa; Teruo Shimomura

doi:10.1117/12.531047

19 November 2003 Speckle reduction of kinoform reconstruction by utilizing the 2π ambiguity of image phase differences

Shiyuan Yang, Bhupendra Bimal Chhetri, Seiichi Serikawa, Teruo Shimomura

Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.531047
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy

Abstract

The speckle noise is a serious problem in the reconstructed images from kinoforms. A random phase added to the desired image can reduce the dynamic range of its Fourier spectrum, but this involves the speckle noise. In general, isolated first-order zeros in band-limited complex amplitudes are always surrounded by phase change from -π to π. These isolated zeros may cause the speckle noise in kinoform reconstruction. The isolated zeros are lead from a 2π circle of the reconstructed image phase differences. We suggest a new iterative algorithm to optimize the desired image phases in order to reduce the isolated zeros. Experimental results showed that our new iterative algorithm is effective for the speckle reduction of kinoform reconstruction.

Citation Download Citation

Shiyuan Yang, Bhupendra Bimal Chhetri, Seiichi Serikawa, and Teruo Shimomura "Speckle reduction of kinoform reconstruction by utilizing the 2π ambiguity of image phase differences", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); https://doi.org/10.1117/12.531047

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