Illumination method based on picture level images

Abstract

The invention discloses an illumination method based on picture level images. The method mainly includes the steps that an illumination equation is resolved through a particular solution Legendre polynomial in a Legendre equation; spherical harmonic coefficients are utilized, a resolved function is projected through a spherical harmonic function, and then the restored illumination equation is obtained; the illumination value of an environment map and the color value of a map are multiplied, and the obtained result is the final pixel color value. According to the illumination method based on the picture level images, the defects that in the prior art, the image processing difficulty is large, the image quality is poor, and the simulation effect is not good can be overcome, and the advantages that the image processing difficulty is small, the image quality is good, and the simulation effect is good are achieved.

Description

technical field [0001] The invention relates to the field of computer graphics, in particular to a lighting method based on photo-level images. Background technique [0002] With the development of computer graphics technology, the application of integral equations and numerical operations to image processing has achieved great success, and computer graphics and graphics and image processing technology have attracted attention. Through these technologies, the real rendering style of the picture can be realized, and it is necessary to provide A photo-level rendering technology. This technology has high requirements for lighting, materials, and textures in 3D scenes. While grasping the picture as a whole, it also emphasizes the understanding of the microscopic world, focusing on texture and details. In-depth performance can achieve the same real picture effect as photos. [0003] At present, the panorama in the scene is used as a computer texture to map onto the computer-gene...

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Problems solved by technology

[0003] At present, the panorama in the scene is used as a computer texture to map onto the computer-generated model, showing the surface image of the object with natural luster, and the illumination of the high dynamic range image has become a current research hotspot, and some are based on Montecard. Lowe's integral calculates image-based lighting. Although these lighting can perform well, there is still a big gap in being able to truly simulate reality.

[0004] In the process of realizing the present invention, the inventor found that there are at least defects such as difficult image processing, poor image quality and poor simulation effect in the prior art

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