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Publications (21)
A new fast version of the reconstruction algorithm for computed tomography based on the simultaneous algebraic reconstruction technique (SART) is proposed. The algorithm iteration is asymptotically accelerated using the fast Hough transform from O(n
3) to O(n
2logn). Similarly to the algebraic reconstruction technique (RegART), which was proposed b...
We propose a new fast version of the Simultaneous Algebraic Reconstruction Technique (SART) for computer tomography. The algorithm's iteration has been made asymptotically faster with a fast Hough transform. The algorithm's behavior has been studied with a model experiment.
We study the issue of performance improvement of classification-based object detectors by including certain geometric-oriented filters. Configurations of the observed 3D scene may be used as a priori or a posteriori information for object filtration. A priori information is used to select only those object parameters (size and position on image pla...
This paper presents the results of a comprehensive analysis of structural changes in the caudal vertebrae of Turner's thick-toed geckos by computer microtomography and X-ray fluorescence analysis. We present algorithms used for the reconstruction of tomographic images which allow to work with high noise level projections that represent typical cond...
In this paper we propose a solution to the problem of predicting the behavior of vehicles on the road scene based on image analysis. A 3D detection deep neural network is used to detect objects and estimate their position. The kinematic bicycle model is considered as a behavior model, with each vehicle being processed separately, i.e. without takin...
Программа предназначена для управления движением сельскохозяйственной техники за счет автоматического наведения с использованием систем машинного зрения по нескошенной кромке поля, валку или рядку. Область применения: компьютерное зрение, радиолокационные системы распознавания. Функциональные возможности: выделение на изображении с камеры траектори...
A new approach is proposed to solve the problem of tomographic reconstruction when scanning objects by polychromatic radiation. The application of algebraic reconstruction method, which makes it possible to take into account the spectral features of the interaction between object components and radiation, allows one to reconstruct component distrib...
Artifacts caused by intensely absorbing inclusions are encountered in computed tomography via polychromatic scanning and may obscure or simulate pathologies in medical applications. Тo improve the quality of reconstruction if high-Z inclusions in presence, previously we proposed and tested with synthetic data an iterative technique with soft penalt...
Программа предназначена для обнаружения объектов дорожной сцены и участников дорожного движения. Область применения: компьютерное зрение для решения задач повышения безопасности движения автомобилей. Программа при движении транспортного средства в реальном времени определяет автомобили независимо от их ракурса и наличия частичного заслонения объект...
Полезная модель относится к области компьютерного зрения, в частности, к системе анализа дорожной обстановки и выработки сигналов управления транспортным средством. Техническим результатом является повышение быстродействия системы путем выработки сигналов управления приводом рулевого механизма транспортного средства в момент фиксации изменения поло...
The artifacts (known as metal-like artifacts) arising from incorrect reconstruction may obscure or simulate pathology in medical applications, hide or mimic cracks and cavities in the scanned objects in industrial tomographic scans. One of the main reasons caused such artifacts is photon starvation on the rays which go through highly absorbing regi...
A combination of X-ray tomography at different wavelengths and X-ray fluorescence analysis was applied in the study of two types of bone tissue changes: prolonged presence in microgravity conditions and age-related bone growth. The proximal tail vertebrae of geckos were selected for investigation because they do not bear the supporting load in loco...
Artifacts caused by intensely absorbing areas are encountered in computed tomography and may obscure or simulate pathology in medical applications, hide or mimic the cracks and cavities in the devices at industrial applications. We simulated sinograms with different levels of absorption to demonstrate the artifacts dynamics. If the analysis of the...
A method of determining of the road shape and direction is proposed. The road can potentially have curved shape as well as be seen unclearly due to weather effects or relief features. The proposed method uses video taken from frontal camera that is rigidly placed in car as an input data. The method is based on self-similarity of typical road image,...
As is well known, the algebraic reconstruction techniques are stable to the high level of noise. Basic constraint of the algebraic methods use is the long duration of computations. New effective algebraic reconstruction technique based on Hough transform is offered. The algorithm enables to improve an asymptotic form of iteration from to. Shepp-Log...
