A light map bake algorithm based on voxel global illumination algorithm

A global illumination and voxelization technology, applied in the field of illumination algorithms, can solve the problems of massive calculations and long time required, and achieve the effect of improving efficiency, avoiding time-consuming, and high-quality global illumination results

Inactive Publication Date: 2019-03-08
北京五一视界数字孪生科技股份有限公司
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Problems solved by technology

[0005] The present invention provides an algorithm for light map baking based on the voxelized global illumination algorithm, which solves the problem that the existing light map baking algorithm requires a large amount of calculation and takes a long time

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  • A light map bake algorithm based on voxel global illumination algorithm

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Embodiment Construction

[0025] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0026] refer to figure 1 , an algorithm for light map baking based on the voxelized global illumination algorithm, including a pre-computation part and a real-time rendering part,

[0027] The pre-calculation part uses a voxelized global illumination algorithm to bake light maps according to scene information, including the following steps:

[0028] Step 1. Voxelization of 3D scene

[0029] Cut the object in the scene so that it is composed of several voxels, and divide it through the grid. The adjacent 8 grid nodes form a small voxel, and the voxel represents some measurable pixels of the scene. The properties, or independent variables of , are represented by mes...

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Abstract

A light map bake algorithm based on voxelize global illumination algorithm is disclosed. The algorithm comprises a precomputation part and a real-time rendering part, wherein the precomputation part uses a voxelized global light illumination algorithm to bake a light map according to scene information, and the real-time rendering part performs real-time rendering according to a ray tracing algorithm in the precomputed light map. The algorithm of the invention solves the problem that the prior optical mapping baking algorithm needs a large number of calculations and takes a long time.

Description

technical field [0001] The invention relates to the field of illumination algorithms, in particular to an algorithm for baking light maps based on a voxelized global illumination algorithm. Background technique [0002] In 3D rendering programs, calculation of light path transmission is one of the core issues. Light is emitted from a light source, enters a scene, and reaches the viewer after a single or multiple reflections in the scene. To generate real images, it is necessary to simulate and calculate complex optical paths in the program, which often cannot meet real-time requirements. [0003] Lightmap baking is a common technique. Lightmaps are special textures that store the final lighting on various surfaces of objects in the scene. When the objects and light sources in the scene do not change, the light path will not change, so the light map can be obtained through pre-calculation. In this way, complex light path calculations can be avoided during real-time render...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T15/00G06T15/06G06T15/50
CPCG06T15/00G06T15/06G06T15/50
Inventor 潘明皓帕斯卡·亚瑟李熠
Owner 北京五一视界数字孪生科技股份有限公司
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