7 research outputs found

    Gradient-based technique for image structural analysis and applications

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    This paper is devoted to application of gradients field characteristics in selected problems of image intellectual analysis and processing. To analyse the properties and structure of an image several approaches and models based on the use of the gradients field characteristics, are proposed. In this paper, models based on Weibull distribution are considered, an image dominant direction estimation algorithm using the parameters of scattering ellipse of gradients field components is proposed, and a similarity measure of two images with arbitrary dimensions and orientation is proposed. Some examples of applications of these models for estimation of blur and structuredness of an image, for the quality assessment of resizing and rotating algorithms, as well as for detection of a specified object on the image delivered by an unmanned aerial vehicle, are given.This work was supported by the State Committee of Science of the Ministry of Education and Science of the Republic of Armenia, under the research project No. 15T-1B274 and by Russian-Armenian University under the research project funded by the Ministry of Education and Science of the Russian Federation

    Gradient-Based Technique for Image Structural Analysis and Applications

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    Π‘Ρ‚Π°Ρ‚ΡŒΡ посвящСна ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΡŽ характСристик Π³Ρ€Π°Π΄ΠΈΠ΅Π½Ρ‚Π½ΠΎΠ³ΠΎ поля Π² ΠΈΠ·Π±Ρ€Π°Π½Π½Ρ‹Ρ… Π·Π°Π΄Π°Ρ‡Π°Ρ… ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° ΠΈ ΠΎΠ±Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ. Для описания свойств ΠΈ структуры изобраТСния ΠΏΡ€Π΅Π΄Π»Π°Π³Π°ΡŽΡ‚ΡΡ нСсколько ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ΠΎΠ² ΠΈ ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ, основанных Π½Π° использовании характСристик Π³Ρ€Π°Π΄ΠΈΠ΅Π½Ρ‚Π½ΠΎΠ³ΠΎ поля. Π’ частности, Ρ€Π°ΡΡΠΌΠ°Ρ‚Ρ€ΠΈΠ²Π°ΡŽΡ‚ΡΡ ΠΌΠΎΠ΄Π΅Π»ΠΈ, основанныС Π½Π° распрСдСлСнии Π’Π΅ΠΉΠ±ΡƒΠ»Π»Π°, прСдставлСн Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ ΠΎΡ†Π΅Π½ΠΊΠΈ Π΄ΠΎΠΌΠΈΠ½ΠΈΡ€ΡƒΡŽΡ‰Π΅Π³ΠΎ направлСния изобраТСния с использованиСм ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² эллипса рассСивания ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ Π³Ρ€Π°Π΄ΠΈΠ΅Π½Ρ‚Π½ΠΎΠ³ΠΎ поля ΠΈ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° ΠΌΠ΅Ρ€Π° подобия Π΄Π²ΡƒΡ… ΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΉ с ΠΏΡ€ΠΎΠΈΠ·Π²ΠΎΠ»ΡŒΠ½Ρ‹ΠΌΠΈ Ρ€Π°Π·ΠΌΠ΅Ρ€Π°ΠΌΠΈ ΠΈ ΠΎΡ€ΠΈΠ΅Π½Ρ‚Π°Ρ†ΠΈΠ΅ΠΉ. ΠŸΡ€ΠΈΠ²Π΅Π΄Π΅Π½Ρ‹ ΠΏΡ€ΠΈΠΌΠ΅Ρ€Ρ‹ примСнСния этих ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ для оцСнивания размытости изобраТСния, оцСнивания качСства Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠΎΠ² ΠΈ ΠΏΡ€ΠΎΠ³Ρ€Π°ΠΌΠΌ ΠΌΠ°ΡΡˆΡ‚Π°Π±ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΡ, ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ Π°Π½Π°Π»ΠΈΠ·Π° Π²ΠΈΠ΄Π΅ΠΎΠΏΠΎΡ‚ΠΎΠΊΠΎΠ², Π° Ρ‚Π°ΠΊΠΆΠ΅ Π² Π·Π°Π΄Π°Ρ‡Π΅ обнаруТСния ΠΎΠΏΡ€Π΅Π΄Π΅Π»Π΅Π½Π½ΠΎΠ³ΠΎ ΠΎΠ±ΡŠΠ΅ΠΊΡ‚Π° Π½Π° Π²ΠΈΠ΄Π΅ΠΎΠΈΠ·ΠΎΠ±Ρ€Π°ΠΆΠ΅Π½ΠΈΠΈ, поставляСмом бСспилотным Π»Π΅Ρ‚Π°Ρ‚Π΅Π»ΡŒΠ½Ρ‹ΠΌ Π°ΠΏΠΏΠ°Ρ€Π°Ρ‚ΠΎΠΌ. The paper is devoted to application of gradient field characteristics in selected problems of image intellectual analysis and processing. To describe the properties and structure of an image several approaches and models based on the use of the gradient field characteristics, are proposed. In particular, the models based on Weibull distribution are considered, an image dominant direction estimation algorithm using the parameters of the scattering ellipse of the gradient field components is presented, and a similarity measure of two images with arbitrary dimensions and dominant orientation is proposed. Some examples of applications of these models for estimation of an image blur, for estimation of the quality of resizing algorithms and software, for intellectual analysis of a video are proposed, as well as a procedure for specified object detection on the image delivered by an unmanned aerial vehicle is described.ИсслСдованиС Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ Π² Российско-Армянском (Блавянском) унивСрситСтС Π·Π° счёт срСдств, Π²Ρ‹Π΄Π΅Π»Π΅Π½Π½Ρ‹Ρ… Π² Ρ€Π°ΠΌΠΊΠ°Ρ… субсидии МОН Π Π€ Π½Π° финансированиС Π½Π°ΡƒΡ‡Π½ΠΎ-ΠΈΡΡΠ»Π΅Π΄ΠΎΠ²Π°Ρ‚Π΅Π»ΡŒΡΠΊΠΎΠΉ Π΄Π΅ΡΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ РАУ. ИсслСдованиС Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½ΠΎ ΠΏΡ€ΠΈ финансовой ΠΏΠΎΠ΄Π΄Π΅Ρ€ΠΆΠΊΠ΅ ГосударствСнного ΠΊΠΎΠΌΠΈΡ‚Π΅Ρ‚Π° ΠΏΠΎ Π½Π°ΡƒΠΊΠ΅ МОН РА Π² Ρ€Π°ΠΌΠΊΠ°Ρ… Π½Π°ΡƒΡ‡Π½ΠΎΠ³ΠΎ ΠΏΡ€ΠΎΠ΅ΠΊΡ‚Π° β„– 15T-1B274
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