Web3D model rendering method based on sight distance hierarchical optimization

A model and line-of-sight technology, applied in the field of visualization, can solve problems such as poor user experience, reduced browser rendering frame rate, and weakened real-time product interaction, to simplify complexity, improve loading efficiency, and reduce transmission traffic.

Pending Publication Date: 2020-01-31
HANGZHOU NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as the size of the 3D model increases rapidly, the rendering frame rate of the browser will decrease accordingly, and a too low frame rate will weaken the real-time interaction of the product and even bring a bad experience to users

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  • Web3D model rendering method based on sight distance hierarchical optimization
  • Web3D model rendering method based on sight distance hierarchical optimization
  • Web3D model rendering method based on sight distance hierarchical optimization

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Embodiment Construction

[0045] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these examples are only used to illustrate the present invention and are not intended to limit the scope of the present invention. The operating methods not indicated in the following examples are generally in accordance with conventional conditions, or in accordance with the conditions suggested by the manufacturer.

[0046] The flow of line-of-sight layered optimization algorithm of the present invention is as follows figure 1 As shown, it is divided into preprocessing stage and operation stage. Among them, the preprocessing stage includes the generation of spatial units, the calculation of visibility and the random ordering of leaves; the running stage includes LOD (Levels Of Detail) selection and generation of triangle sequences.

[0047] This embodiment specifically elaborates the above-mentioned Web3D model re...

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Abstract

The invention discloses a Web3D model rendering method based on sight distance hierarchical optimization, and the method comprises a preprocessing stage which comprises the steps: (1), generating a series of space units for a three-dimensional model, and guaranteeing that each edge of the three-dimensional model is surrounded in the space units; (2) calculating the visibility of each space unit from different viewpoints, recording the visibility of each space unit at different viewpoints, and removing invisible space units; (3) allocating a random number to each spatial unit which is not eliminated, and sorting and storing the spatial units by taking the number as a key value; an operation stage: (4) dynamically calculating detail level factors of each space unit along with the change of aviewpoint; and (5) dynamically determining necessary space units of the current detail level model according to the detail level factors, forming a triangular sequence by the necessary space units, and finally sending the triangular sequence to a rendering pipeline for rendering.

Description

technical field [0001] The invention relates to the field of visualization technology, in particular to a Web3D model rendering method based on visual distance hierarchical optimization. Background technique [0002] Since three-dimensional (3D) graphics can represent the world more realistically and intuitively than two-dimensional graphics, and are easier to be recognized and accepted by humans, the application of three-dimensional graphics is becoming more and more extensive. However, rendering 3D graphics requires a computer with strong rendering capabilities, especially on the Web side. In the past, only CPU resources were used for rendering, which is extremely challenging for large-scale 3D graphics. [0003] With the rapid development of computer hardware, computer graphics and other related technologies and the emergence of WebGL, browsers have been able to directly call GPU resources for rendering, making it possible to quickly render complex 3D models on the browse...

Claims

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Application Information

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IPC IPC(8): G06T15/00G06T17/00
CPCG06T15/005G06T17/005
Inventor 李智猛黄剑平
Owner HANGZHOU NORMAL UNIVERSITY
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