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dc.contributor.authorRomanyuk, Oleksandr-
dc.contributor.authorРоманюк, Олександр Никифорович-
dc.contributor.authorРоманюк, Александр Никифорович-
dc.contributor.authorZavalniuk, Yevhen-
dc.contributor.authorЗавальнюк, Євген Костянтинович-
dc.contributor.authorЗавальнюк, Евгений Константинович-
dc.contributor.authorChekhmestruk, Roman-
dc.contributor.authorЧехместрук, Роман Юрійович-
dc.contributor.authorЧехместрук, Роман Юрьевич-
dc.contributor.authorMykhaylov, Pavlo-
dc.contributor.authorМихайлов, Павло Ігорович-
dc.contributor.authorМихайлов, Павел Игоревич-
dc.contributor.authorAchanyar Hamza-
dc.contributor.authorАчаняр Хамза-
dc.date.accessioned2023-07-07T12:59:52Z-
dc.date.available2023-07-07T12:59:52Z-
dc.date.issued2023-07-03-
dc.identifier.citationRomanyuk, O., Zavalniuk, Ye., Chekhmestruk, R., Mykhaylov, P., Achanyar Hamza. (2023). Combined bidirectional reflectance distribution functions usage for increasing images creation productivity. Аpplied Aspects of Information Technology, Vol. 6, N 2, р. 130–138.еn
dc.identifier.citationCombined bidirectional reflectance distribution functions usage for increasing images creation productivity / O. Romanyuk, Ye. Zavalniuk, R. Chekhmestruk, P. Mykhaylov, Achanyar Hamza // Аpplied Aspects of Information Technology = Прикладні аспекти інформ. технологій. – Оdesa, 2023. – Vol. 6, N 2. – P. 130–138.еn
dc.identifier.issn2617-4316-
dc.identifier.issn2663-7723-
dc.identifier.urihttp://dspace.opu.ua/jspui/handle/123456789/13902-
dc.description.abstractModern computer graphics systems are characterized bythe requirements of highly-realistic and highly-productive image formation. In order to increase image formation productivity, the improvement of existing light reflectance models and the development of new models are constantly carried out. In the article the development of a combined light reflectance model based on the cosine-power functions is described. The main aspects of surface bidirectional reflectance distribution functions calculation and usage are analyzed. The features of simple empirical models and theoretical models that take into account microfacetedsurface representation are described. The disadvantages of existing surface reflectance models are discussed. The cosine-power functions of the fourth and sixteenth degreesare discussed. The necessity of the development ofanew surface reflectance model based on two cosine-power functions is justified. The calculation formula of the developed combined surface reflection functionis proposed. The formula oftheconnection point of two cosine-power functions was obtained. The obtained formula was approximated with a simpler formula using Chebyshev polynomials. The plot of cosine-power functions connection point valueswas built. The plot of productivity gain from combined function calculationrelative to the shininess coefficientis given. The average productivity gain value from combined function calculation was found. The plot of relative and absolute errors between the combinedfunction and the Blinn function relative to the shininess surface coefficient is given. The three-dimensional plot of absolute error between the combined function and the Blinn function was built. Using OpenGL shadinglanguage the developed model was implemented in the software application Bidirectional Reflectance Distribution FunctionsExplorer. The teapot visualization results based on the proposed combined function are given.The developed combined model combines the advantages oftwocosine-power functions and can be used in highly-productive three-dimensional computer graphics systems.en
dc.language.isoenen
dc.publisherNauka i Tekhnikaen
dc.subjectBidirectional reflectance distribution functionen
dc.subjectcombined functionen
dc.subjectcosine-power functionen
dc.subjectphong modelen
dc.subjectBlinn modelen
dc.titleCombined bidirectional reflectance distribution functions usage for increasing images creation productivityen
dc.title.alternativeКомбіноване використання двопроменевих функцій відбивної здатності для підвищення продуктивності формування зображеньuk
dc.typeArticleen
opu.citation.journalApplied Aspects of Information Technologyen
opu.citation.volume2en
opu.citation.firstpage130en
opu.citation.lastpage138en
opu.citation.issue6en
Располагается в коллекциях:2023, Vol. 6, № 2

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