Розробка методів зафарбовування та моделей відбивних здатностей поверхонь для створення реалістичної комп'ютерної графіки. Частина 2. Розробка методів та засобів розрахунку інтенсивностей кольору пікселів

Abstract

In the master's qualification work the methods and means of increasing the productivity and realism of coloring of three-dimensional graphic objects by the direct method are developed. The analysis of methods and means of painting three-dimensional graphic figures has been carried out. The expediency of perfection of methods of painting by the reduction of their computational complexity, as well as increase of realism is substantiated. An adaptive coloring method is developed in which, depending on the curvature of the surface of the presence of diffuse and specular component of color, the method of painting is selected. The algorithm and program for adaptive coloring of three-dimensional images are developed. The approach to increase the realism of images of three-dimensional objects for Guro is developed. The essence of the modification is to divide the triangle into components, depending on the analysis of the maximum values of the intensity of the color on the edges of the triangle. The developed software has shown that this approach provides increased realism of reproduction of glare and takes into account the local curvature of the surface. In order to reduce the computational complexity of painting, an approach to the adaptive normalization of vectors is developed, the essence of which is that normalization is performed in those cases where linear interpolation of normal vectors leads to an error which is more than threshold. The proposed approach allows for 25% reduction of computational costs for normalization.