Normal map reconstruction processing system and method for 3D models

Abstract

The invention discloses a normal map reconstruction processing system for 3D models. The system comprises a model import module, a slice processing module, a slice analysis module, a slice normal calculation and mapping processing module, a model updating module and a model output module, wherein the slicing processing module is connected with the model import module and is used for carrying out slice scanning processing on a to-be-processed model through passing through all the map top points by a scanning line; the slice analysis module is connected with the slice processing module and is used for carrying out analysis processing on the model slices processed by the slice processing module; the slice normal calculation and mapping processing module is connected with the slice analysis module and is used for carrying out point-by-point normal calculation by taking slices as basis so as to write in a normal map and calculating a new map UV coordinate when the top points are scanned; the model updating module is connected with the slice normal calculation and mapping processing module and is used for updating the model according to the processing result of the slice normal calculation and mapping processing module; and the model output model is connected with the model updating module and is used for outputting the updated model. The invention furthermore discloses a normal map reconstruction processing method for 3D models.

Description

technical field [0001] The invention relates to the field of 3D model processing, in particular to a normal map reconstruction processing system and processing method for 3D models. Background technique [0002] In 3D model rendering, the object is composed of 3D triangular faces, and the hardware GPU performs rendering and calculation based on each triangular face. Therefore, the more triangles there are, the more calculations the GPU needs to perform. Therefore, in order to ensure high efficiency and high frame rate in 3D model rendering, it is necessary to reduce the number of triangles. In 3D virtual technology, since the original model generally includes normal information in vertex information. In the surface reduction calculation, in order to improve the surface reduction effect to a greater extent, it must be ensured that after the meshes are merged, the normal data of the subtracted vertices should be as consistent as possible before the light and shadow calculati...

AI Technical Summary

Problems solved by technology

However, in the prior art, after the surface reduction process is performed on the 3D model, the normal line is not restored. Therefore, when the surface reduction exceeds a certain amount, the vertex information is seriously lost and the normal line is discontinuous, resulting in large rendering distortion of the 3D model.

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