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Evaluation method of flame model reliability

An evaluation method and reliability technology, applied in the field of virtual reality science, can solve the problems of lack of basis and guidance for selection and improvement of simulation methods

Inactive Publication Date: 2011-01-19
BEIHANG UNIV
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Problems solved by technology

This makes the selection and improvement of simulation methods lack of basis and guidance

Method used

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  • Evaluation method of flame model reliability
  • Evaluation method of flame model reliability
  • Evaluation method of flame model reliability

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Embodiment Construction

[0023] The invention proposes a flame model error function for comprehensively evaluating flame shape, color, randomness and user requirements, and provides reference for selection and improvement of modeling methods. The procedure of this method is as follows figure 1 As shown, the steps are as follows:

[0024] Step 1 obtains the video of the real flame and the flame model respectively, and cuts out several images at medium time intervals from the video.

[0025] Step 2 calculates its error relative to the corresponding real flame image for the flame model image; the method proposed by the present invention includes four steps, which are respectively: calculating the shape error of the flame model, calculating the color error of the flame model, and calculating the randomness of the flame model. Sexual error, the demand error of calculating the flame model.

[0026] Step 2.1 extracts the flame profile of each flame model image and the corresponding real flame image, calcul...

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Abstract

The invention relates to an evaluation method of flame model reliability, belonging to the technical field of virtual reality science. The invention has the technical scheme as follows: (1) under a relatively stable environment, sampling flame combustion to obtain a real flame video and a simulated flame three-dimensional time-varying model under the state, and capturing a plurality of images at equal time interval in a video and simulation result; (2) comparing the images obtained in step (1), calculating the form error, the color error and the random error of the flame model relatively to the real flame, and combining with user requirements to calculate the demand error of the flame model relatively to the real flame; (3) generating the error function of the flame model by each error item; and (4) according to the error function, analyzing the flame model reliability. In the invention, the visual parameter information of the flame model and parameter information relative to user demands are fully considered, so that a method for evaluating a flame simulation result is provided, the reliability of a simulation result is analysed and a method basis for choosing and improving a modelling method is provided.

Description

technical field [0001] The invention relates to a method for evaluating the credibility of a flame model, which belongs to the field of virtual reality science and technology. Background technique [0002] With the rapid development of computer graphics technology, more and more flames appear in computer animation, film and television production and media advertising and other scenes. When simulating the battlefield, the simulation of flame is also essential. [0003] The flame has real-time changeability and irregularity, its appearance shape is extremely irregular, and there is no smooth surface, which makes the classical Euclidean geometry seem powerless to describe it. At the same time, during the burning process of the flame, it is affected by various internal and external factors. In addition, the form of flame combustion is very rich. Different fuels show huge differences in different situations, which is the real simulation of the flame. present a severe test. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/00G06T17/00
Inventor 吴威吴蕊周忠赵沁平
Owner BEIHANG UNIV
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