In the article, a new light reflectance model is proposed.The model is based on the modified cosine-quadratic Monk Fruit 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 Pet Training Aids 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.