Three-dimensional grid simplifying method applied to VR virtual bank
A technology of three-dimensional mesh and triangular mesh, which is applied in the field of image processing, can solve the problems that the model cannot be directly applied to virtual banks, cannot be transplanted well, and the algorithm runs for a long time, so as to optimize the quality of mesh simplification and ensure the fit , reducing the effect of texture stretching
Active Publication Date: 2021-01-22
河北地质大学 +1
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[0013] However, these mesh simplification methods are all simplified based on the original model without texture maps. Since the models displayed in the virtual banking system are realistic models with texture maps, the simplified models of these methods cannot be directly applied. among virtual banks
Moreover, due to the large amount of calculation of the existing algorithm, the running time of the algorithm is too long, so it cannot be well transplanted into the program run by the virtual bank
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[0072] Embodiment A 3D grid simplification method applied to VR virtual bank
[0073] Such as Figure 4 As shown, this embodiment is carried out according to the following steps in sequence:
[0074] 1. The system loads the 3D mesh model in OBJ format, performs simplified initialization operations, reads in the relevant information of the 3D mesh model, generates a list for storage, and calculates the number of theoretical triangular faces after simplification according to the set model simplification accuracy ε;
[0075] ε is a percentage set according to actual needs, 0<ε<100%, in this embodiment, ε=80%; the relevant information of the 3D mesh model includes vertex information and texture map information;
[0076] 2. Calculate the error matrix M of each original triangle contained in each triangular mesh by reading in the relevant information of the 3D mesh model p ;
[0077] In this step, the error matrix M is calculated p The method adopts the method in the prior art; ...
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The invention discloses a three-dimensional grid simplification method applied to a VR virtual bank. The three-dimensional grid simplification method sequentially comprises the following steps 1, calculating the number of simplified theoretical triangular surfaces; 2, calculating an error matrix of each original triangle contained in each triangular mesh; 3, obtaining a geometric error and a texture error of the three-dimensional grid model; 4, calculating an edge collapse error of each edge; 5, constructing a minimum pile; 6, selecting the edge with the minimum collapse error to carry out collapse simplification; 7, conducting edge collapsing operation; 8, obtaining the surface number of the simplified triangular sheet; 9, if the number of the simplified triangular patches being larger than the number of the simplified theoretical triangular patches, the sixth step is executed for continuous simplification, and otherwise, the simplification process is finished. According to the method, the quality of the display model can be guaranteed while three-dimensional grid simplification is carried out, and the purpose that system operation is not seriously influenced is achieved, so thatthe online virtual bank system based on VR is better achieved. The invention belongs to the technical field of image processing, and is used for simplifying a three-dimensional grid.
Description
technical field [0001] The invention belongs to the technical field of image processing, and relates to a three-dimensional grid simplification method, in particular to a three-dimensional grid simplification method applied to a VR virtual bank. Background technique [0002] The rapid development of virtual reality (VR) technology is currently widely used in tourism exhibitions, engineering design, assembly maintenance, medical research, military training and other fields. The emergence of virtual reality technology makes many things appear in front of people in new forms, which is gradually changing people's traditional way of life. Virtual online banking based on VR technology has emerged as the times require. A virtual bank refers to a three-dimensional electronic bank created using virtual information processing technology. Because all businesses of the virtual bank are handled through the Internet, its office efficiency is faster, and its service and operating rates a...
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IPC IPC(8): G06T17/20G06T15/04G06T19/00
CPCG06T17/20G06T15/04G06T19/006Y02D10/00
Inventor 李明亮许雷张孟郑一博
Owner 河北地质大学