Work

Modified cosine-quadratic reflectance model

Year: 2025

Type: article

Abstract: In the article, a new light reflectance model is proposed. The model is based on the modified cosine-quadratic bidirectional reflectance distribution function. The concept of bidirectional reflectance distribution function is analyzed. The disadvantages of existing physically accurate and empirical bidirectional reflectance distribution functions, including classical cosine-quadratic function, are discussed. The necessity of new empirical distributive functions development is justified. The comparison of double integrals of hemispherical reflectivity of reference Blinn function and classical cosine-quadratic function is provided. Based on the comparison, the new expression of cosine-quadratic distributive function calculation is obtained. The proposed expression makes it possible to significantly increase the accuracy of glare epicentre reproduction and is intended for use in highly productive three-dimensional rendering systems

Source: Informatyka Automatyka Pomiary w Gospodarce i Ochronie Środowiska

DOI: 10.35784/iapgos.7384

Authors: Oleksandr Romanyuk, Volodymyr Lytvynenko, Yevhen Zavalniuk

Institutions: Vinnytsia National Technical University, Kherson National Technical University

Language: English

Topic: Computer Graphics and Visualization Techniques

Subfield: Computer Graphics and Computer-Aided Design

Field: Computer Science

Domain: Physical Sciences

Open Access status: diamond

OpenAlex ID: W4408990158

FWCI:

Cites: 26

Cited by:

Related to: 10