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Two-stage spatial-filtering for diffraction pattern-analysis
(Optical Society of America, 1981-03)
The use of optical power spectrum analysis for feature detection and classification is often restricted by the superposition of the aperture spectrum. A spatial frequency filtering technique using a circular aperture and ...
Empirical formula for creating error bars for the method of paired comparison
(International Society for Optical Engineering (SPIE), 2006-01)
The method of paired comparison based on Thurstone’s
case V of his law of comparative judgments is often used as a psychophysical
method to derive interval scales of perceptual qualities
in imaging applications. However, ...
Image deconvolution using a micro genetic algorithm
(Elsevier - Optics Communications, 1997-07-15)
Image deconvolution is addressed using a modified Genetic Algorithm for the error minimization. Numerical examples
are presented to demonstrate the algorithm’s robustness. Specifically, noise levels and various regions ...
Image lightness rescaling using sigmoidal contrast enhancement functions
(International Society for Optical Engineering (SPIE), 1999-10)
In color gamut mapping of pictorial images, the lightness rendition of the mapped images plays a major role in the quality of the final image. For color gamut mapping tasks, where the goal is to produce a match to the ...
Linear pixel shuffling for image processing, an introduction
(International Society for Optical Engineering (SPIE), 1993-04)
We investigate a method of ordering pixels (the elements of a rectangular matrix) based on an arithmetic progression with wrap-around (modular arithmetic). For appropriate choices of the progression's parameters, based on ...
Accurate color reproduction of CRT: displayed images as projected 35mm slides
(International Society for Optical Engineering (SPIE), 1996-01-01)
Accurate color reproduction of images presented on a computer-controlled CRT display as projected 35-mm transparencies is a complicated procedure requiring the characterization and
control of several imaging processes and ...
Application of spectral mixture analysis and image fusion techniques for image sharpening
(Elsevier Science B.V., Amsterdam, 1998-02)
Image fusion is used to merge images of different Spatial and spectral resolutions to create a high spatial resolution multispectral conibination. High spectral resolution allows identification of materials in the scene, ...