Surface rendering method and system of dynamic particle set

Abstract

The invention relates to a surface rendering method and system of a dynamic particle set. The method comprises steps that firstly, target fluid particle position data is recorded, a depth diagram of a particle set is acquired through a particle sputtering method and is taken as fluid surface pre-estimation, a contour surface is searched through a light projection process, GPU parallel acceleration is employed to accelerate the light projection process, principal component analysis on a neighborhood particle set of each particle is carried out to estimate a fluid surface normal vector, a surface normal vector diagram is acquired, and lastly, the surface normal vector diagram is inputted to a light tracker to acquire the surface rendering effect. The method is advantaged in that memory and calculation resources are concentrated around the actual fluid surface but not the whole simulation space, the method is suitable for real-time visualization and surface preview of large-scale particle sets, noise interference can be effectively eliminated, the relative smooth normal vector result is acquired, and embedding into existing fluid simulation frameworks is easy.

Description

technical field [0001] The present invention relates to a technology in the field of graphics processing, in particular to a surface rendering method and system for a dynamic particle set. Background technique [0002] The particle-based Lagrangian method can perform fluid simulation relatively quickly. However, the surface rendering quality of the dynamic particle collection is poor, the surface is not smooth and even small particle balls protruding from the surface can be seen, or the surface is too smooth and a lot of fluid details are blurred. The current rendering technology has high memory requirements, and it takes several minutes or even longer to render a frame of image. Contents of the invention [0003] The present invention aims at the severe distortion of the smoothing result obtained from the depth map by using the bilateral filtering method in the prior art, which cannot meet the requirements of high-precision and high-quality large-scale particle simulatio...

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Problems solved by technology

[0003] The present invention aims at the severe distortion of the smoothing result obtained from the depth map by using the bilateral filtering method in the prior art, which cannot meet the requirements of high-precision and high-quality large-scale particle simulation, and the prior art mostly uses cross multiplication and tangent vectors to obtain the pixel normal direction , the accuracy of the normal result cannot be guaranteed, and it cannot be applied to defects such as independent particle rendering. A method and system for surface rendering of dynamic particle collections are proposed

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