在双色反射模型的基础上通过有限函数的线性组合来表示照明与反射。
On the basis of the double-color reflection, the illustration and reflection is noted for the linear combination of the finite function.
在分析相干光照明下无衍射成像系统理论的基础上，设计了无衍射光成像系统的点扩散函数的测量系统。
Based on the theories of non-diffracting imaging system in coherent light, the measurement system of point spread function (PSF) of non-diffracting imaging system has been presented.
测量结果表明，双向反射分布函数的测量精度取决于测量平台的精度、探测设备的灵敏度以及照明光源的稳定性。
The BRDF measurement results are closely related to the precision of measurement platform, the sensitivity of measurement instrument, and the stability of illuminating light source.
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