Bidirectional texture function compressing and synthesizing method

Abstract

A method for compressing and synthesizing a bidirectional texture function realizes compression and synthesis of the bidirectional texture function data by principal component analysis and color rectangular texture blocks. The method comprises the following steps; firstly the bidirectional texture function data are grouped according to different viewpoints and compressed by the principal component analysis algorithm; and then data blocks are immediately extracted from the compressed bidirectional texture function data by an error calculation method, one color rectangular texture block is formed by every four data blocks, and multi-dimension texture synthesis is carried out by the color rectangular texture blocks; and at last, the compressed and synthesized bidirectional texture function data are drawn on a 3D model surface. The method can compress large-scale bidirectional texture function data and synthesize new multi-dimension texture images according to the existing texture images. The method has the advantages of fast synthesis and precious effect, solves the consistency problem of the multi-dimension texture synthesis, expands means of the multi-dimension texture sources, and meets the realistic drawing requirements in a virtual environment.

Description

technical field [0001] The invention discloses a method for compressing and synthesizing texture functions, in particular a method for compressing and synthesizing bidirectional texture functions, which is mainly used for the construction and rendering of realistic virtual environments, and belongs to the technical field of computer virtual reality. Background technique [0002] The reflective properties of object surfaces have always been a research hotspot in computer graphics and computer vision. The reflective properties of objects focus primarily on how light interacts with the object's surface. The interaction between light and an object is determined by the position, direction, and wavelength of the incident light, the transmission time of the light inside the object, and the position, direction, and wavelength of the outgoing light. Therefore, it can be described by a 12-dimensional function. In practical applications, it is unrealistic to obtain such a high-dimens...

AI Technical Summary

Problems solved by technology

[0009] The technical problem of the present invention is to overcome the deficiencies of the prior art and provide a method for compressing and synthesizing bidirectional texture functions, which can compress large-scale bidirectional texture function data and synthesize new multi-dimensional texture images based on existing texture images. The synthesis process is fast and the effect is accurate, and solves the consistency problem of multi-dimensional texture synthesis, expands the way of multi-dimensional texture sources, and meets the needs of realistic rendering in virtual environments

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