[OPTICAL REVIEW Vol. 8, No. 4 (2001) 260-266]
Parameter Dependence of the Iterative Stepwise Quantization Method in Hologram Binarization for Real and Complex Amplitude Signals
Bhupendra Bimal CHHETRI*, Junichi MOTOJIMA, Shiyuan YANG and Teruo SHIMOMURA
Department of Electrical Engineering, Kyushu Institute of Technology, Sensui-cho 1-1, Tobata-ku, Kitakyushu, 804-8550 Japan
(Received February 1, 2001; Accepted April 26, 2001)
In this paper we present the results of parameter dependence analysis of the iterative stepwise quantization method in amplitude hologram binarization. Although the original method considers only a real amplitude signal, we also analyze the parameter dependence for the complex amplitude signal. The results of the analysis help in selecting the parameters in a way that binary holograms with improved quality of reconstructions can be obtained.
Key words : binary hologram, iterative stepwise quantization, iterative Fourier transform algorithm, hologram domain and object domain constraints, reduced-speckle reconstruction, complex amplitude signal