Material surface BRDF parameter fitting method and system based on laser radar imaging
The invention relates to the technical field of laser radar imaging material characteristic analysis, and provides a material surface BRDF parameter fitting method and system based on laser radar imaging. The method comprises the following steps: measuring BRDF measurement values of a measured mater...
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| creator | GUO HUICHAO LI YINGCHUN LUAN CHENGLONG SUN HOUPENG |
| description | The invention relates to the technical field of laser radar imaging material characteristic analysis, and provides a material surface BRDF parameter fitting method and system based on laser radar imaging. The method comprises the following steps: measuring BRDF measurement values of a measured material at various angles by using a BRDF measurement system; initializing a data value interval of BRDF model parameters; initial values of BRDF model parameters are randomly generated, fitting is carried out on the initial values of the BRDF model parameters by adopting a BBO algorithm to obtain fitting values, and the first 50% of the fitting values are selected and input into a FireFly algorithm for secondary fitting; repeating the steps, and selecting the BRDF fitting value corresponding to the minimum target function value as the optimal BRDF fitting value; and outputting the BRDF model parameter fitting value corresponding to the optimal BRDF fitting value as a fitting result. According to the method, the proble |
| format | Patent |
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The method comprises the following steps: measuring BRDF measurement values of a measured material at various angles by using a BRDF measurement system; initializing a data value interval of BRDF model parameters; initial values of BRDF model parameters are randomly generated, fitting is carried out on the initial values of the BRDF model parameters by adopting a BBO algorithm to obtain fitting values, and the first 50% of the fitting values are selected and input into a FireFly algorithm for secondary fitting; repeating the steps, and selecting the BRDF fitting value corresponding to the minimum target function value as the optimal BRDF fitting value; and outputting the BRDF model parameter fitting value corresponding to the optimal BRDF fitting value as a fitting result. 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The method comprises the following steps: measuring BRDF measurement values of a measured material at various angles by using a BRDF measurement system; initializing a data value interval of BRDF model parameters; initial values of BRDF model parameters are randomly generated, fitting is carried out on the initial values of the BRDF model parameters by adopting a BBO algorithm to obtain fitting values, and the first 50% of the fitting values are selected and input into a FireFly algorithm for secondary fitting; repeating the steps, and selecting the BRDF fitting value corresponding to the minimum target function value as the optimal BRDF fitting value; and outputting the BRDF model parameter fitting value corresponding to the optimal BRDF fitting value as a fitting result. 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| subjects | CALCULATING COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS COMPUTING COUNTING ELECTRIC DIGITAL DATA PROCESSING INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS PHYSICS TESTING |
| title | Material surface BRDF parameter fitting method and system based on laser radar imaging |
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