3D Filtering of Images Corrupted by Additive-Multiplicative Noise

Doklady Mathematics - A novel method for filtering images contaminated by mixed (additive-multiplicative) noise is substantiated and implemented for the first time. The method includes several...     

Depth Map Reconstruction Based on Features Formed by Descriptor of Stereo Color Pairs

Doklady Mathematics - An approach to depth map reconstruction from stereo pairs of color images in visualization of three-dimensional objects is proposed and substantiated for the first time. The...     

Filtering of multichannel video sequences distorted by noise, based on the fuzzy-set theory

A new approach based on the fuzzy-set theory is proposed, which allows detection of object motion from frame to frame of video sequences and filtering of images distorted by additive noise. New fuzzy rules and membership functions introduced in the study make it possible to perform efficient filtering of video sequences using the correlation between channels and in video sequence neighboring frames. Simulation of the proposed and known algorithms of video sequence processing shows the advantage of the new filtering scheme in terms of conventional PSNR, MAE, NCD, SSIM criteria and visual comparison of filtered video sequences.     

Statistical synthesis of chopper radiometric systems

In this study the problem of statistical synthesis of chopper radiometric systems with unstable predetection section of receiver is solved for the first time. A new technique of estimating the fluctuation sensitivity is proposed.     

Hypersensitivity of a nonlinear system with multiplicative colored noise to an external periodic signal

A simple nonlinear stochastic system, an overdamped Kramers oscillator with multiplicative colored noise, is studied analytically and by numerical simulation. It is shown that in the region where on-off intermittency occurs, the system becomes hypersensitive to weak external periodic signals. Zh. éksp. Teor. Fiz. 116, 1484–1498 (October 1999)     

Noise suppression by external noise and periodic signal in a dynamical system

In a simple stochastic system, an overdamped Kramers oscillator with two—internal white and external colored—noise sources, the suppression of the noise component of the output signal spectrum with increasing intensity of the external noise or periodic signal is discovered and analyzed.