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АЛГОРИТМ СОПОСТАВЛЕНИЯ ИЗОБРАЖЕНИЙ ПО КЛЮЧЕВЫМ ТОЧКАМ ПРИ МАСШТАБИРУЕМОСТИ И ВРАЩЕНИИ ОБЪЕКТОВ

АЛГОРИТМ СОПОСТАВЛЕНИЯ ИЗОБРАЖЕНИЙ ПО КЛЮЧЕВЫМ ТОЧКАМ ПРИ МАСШТАБИРУЕМОСТИ И ВРАЩЕНИИ ОБЪЕКТОВ

Abstract

Рассмотрен способ сопоставления изображений по ключевым точкам путем извлечения отличительных, инвариантных относительно масштаба и вращения характеристик. Описан алгоритм извлечения характеристик для эффективного сопоставления различных позиций объекта при значительном диапазоне искажения, изменении в 3D-поле зрения, наличии шума и при изменении освещенности. Приведен метод масштабно-инвариантного преобразования характеристик (SIFT) для сопоставления изображений. Предложены способы реализации метода на примере построения пирамиды гауссианов и пирамиды разностей гауссианов. Рассмотрен алгоритм нахождения точки локального экстремума, выделения ключевых точек, построения вектора признаков и сопоставлены локальные дескрипторы для дальнейшего сравнения пары изображений в условиях вращения объектов, перекрытий, изменения масштаба, точки съемки и освещенности

This article describes an image-matching algorithm using key points to extract distinctive features invariant to scale and rotation. My work presents a feature extraction algorithm for reliable comparison of the different positions of the object or scene with a significant distortion range, changes in the 3D view, presence of noise and illumination changes. The scale-invariant feature transform (SIFT) method was used for matching images. The paper offers method implementation based on the pyramid of Gaussians and the Difference of Gaussian (DoG). The algorithm provides an oportunity to find the local extreme point, to detect key points, to build a feature vector and to compare local descriptors for further image pair matching under conditions of rotation, overlap, scale, change in point of shooting or lighting

Keywords

СОПОСТАВЛЕНИЕ ИЗОБРАЖЕНИЙ,ИНВАРИАНТНЫЕ ХАРАКТЕРИСТИКИ,ПИРАМИДА ГАУССИАНОВ,ПИРАМИДА РАЗНОСТИ ГАУССИАНОВ,КЛЮЧЕВАЯ ТОЧКА,ЛОКАЛЬНЫЙ ЭКСТРЕМУМ,ВЕКТОР ПРИЗНАКОВ,ДЕСКРИПТОР КЛЮЧЕВОЙ ТОЧКИ,IMAGE MATCHING,INVARIANT CHARACTERISTICS,PYRAMID OF GAUSSIANS,DIFFERENCE OF GAUSSIANS,KEY POINT,LOCAL EXTREMUM,FEATURE VECTOR,KEY POINT DESCRIPTOR

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze