Showing papers by "Andrey S. Ostrovsky published in 2008"

Computer reconstruction of the coherent-mode structure of and optical field from the radiometric measurements data

Abstract: The problem of computer reconstruction of the coherent-mode structure of an optical field with unknown cross-spectral density function is considered. It is proposed the alternative coherent-mode representation of a source which does not involve the solution of the Fredholm integral equation but may be obtained from the results of radiometric measurements. The basic concept is illustrated by the example of the alternative coherent-mode representation calculated for the 1-D Lambertian source.

Segmentation of satellite images in optoelectronic system

Abstract: The problem of segmenting the satellite images into homogeneous texture regions that correspond to the different classes of terrestrial surface is considered. It is shown that this problem may be successfully solved by using the method of spectral synthetic discriminant functions recently proposed by the authors for classification of random image fields and realized by means of a rather simple optoelectronic technique. The experimental results of segmenting the true satellite images are given.

Fast algorithm for computer simulation of optical systems with partially coherent illumination

Abstract: The fast algorithm for calculating the bilinear transform in the optical system is proposed. This algorithm is based on the coherent-mode representation of the cross-spectral density function of the illumination. The algorithm is computationally efficient when the illumination is partially coherent. Numerical examples are studied and compared with theoretical results.