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19 August 1998 Information theory on the shape of the scanning objective apertureand the quality of color-separation image
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Abstract
From the view of the optical information theory, we study the transfer of the image's information content by imaging integral equation. We, in terms of a set of complete orthogonal eigen functions, expand the images of the manuscript in Karhunen-loe've series, the Karhunen-loe've basis is prolate spheroidal functions. The resolution of images is represented by the number of significant eigenvalues (also called modes of degree of freedom) of expansion. We analyze the influence of the shape of the scanning sampling objective aperture of scanning device on the definition (or resolution) and quality of the color- separation image. By analyzing the definition and signal to noise ratio of the color-separation images, we obtain the conclusion that, under the condition that the sampling way and the number of scanning lines are same, the quality of the color-separation images sampled by the square objective aperture is better than that sampled by the round one.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yixin Zhang, Qiang Xu, and Linghua Chen "Information theory on the shape of the scanning objective apertureand the quality of color-separation image", Proc. SPIE 3561, Electronic Imaging and Multimedia Systems II, (19 August 1998); https://doi.org/10.1117/12.319709
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