Conventional deconvolution in the Fourier transforms. The image degradation inverse matrix construction
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2012, Vol 0, Issue 50
Abstract
Algorithm for symbolic formation of the multiple transformation matrix for the filter parameters matrix reduction to diagonal form is proposed in this paper. The distorted image is adjusted by this filter (degraded thru input device non-point impulse response). This leads it easy to find the correction filter parameters inverse matrix, which provides an opportunity to realize the image restoration by conditional deconvolution in the basis of Hadamard transform. Using the symbolic dependences in the matrices formation regarding to their tough structure allows significantly reducing the arithmetic operation number in the software implementation of method algorithms and to improve accuracy calculation. From the use of proposed correction matrix inversion method it becomes competitive (for speed) with the conventional deconvolution method in the Fourier transform. In contrast to the Fourier transform basis the solution of the conventional deconvolution problem on Hadamard transform basis for signals with first-order discontinuities (jumps) is more acceptable, since the Hadamard functions are jumplike themselves.
Authors and Affiliations
A. Rybin, N. Ivanyuk
Keywords
Related Articles
- EP ID EP309177
- DOI 10.20535/RADAP.2012.50.21-29
- Views 86
- Downloads 0
Homomorphic Two-Stage Image Sequence Filtering Algorithm in the Presence of Correlated Speckle Noise
Introduction. An images received from synthetic-aperture radar and ultrasonic medical coherent systems are distorted by speckle noise which can be spatially correlated. Sequence frame processing is applied due to poor qu...
Comparative analysis of promising current sources for electrical impedance tomography in an extended frequency range
Iintroduction: Features of biological impedance meters are listed and requirements for their current sources are formed. Formulation of the problem: A review of existing current sources and puts forward proposals to expl...
Accuracy of trajectory estimation algorithms based on distance- measuring surveillance data using different linearization methods
Problem statement: The radar monitoring systems are used broadly for the moving object coordinates determination. Errors of the radar navigation systems are random in nature. The optimal estimation methods and algorithms...
Improvement sedimentometer Wigner
Introduction. These units are classical Wigner sedimentogenesis meters, its advantages and disadvantages. Materials and performance. A device capacitance stnogo-meter level difference between the suspension, located in a...
Low cost low phase noise PLL controlled push-push VCOs in K- and Ka- bands, stabilized by cavity resonator
This work demonstrates push-push VCOs in K-band (with second harmonic output at 24 GHz) and in Ka-band (with third harmonic output at 36 GHz), and PLL synthesizers on their basis. Oscillators are stabilized by a rectangu...