在研究基于图像的局部光照模型时，又提出了双向折射率分布函数这一概念，从而简化了局部光照模型的设计。
The basic idea is illuminating the scene with the light probe images. To simplify the design of local illumination model, the bidirectional transmit distribution function is introduced.
但由于构建背景模型需要考虑光照变化等很多因素，因此开发一个好的减背景算法面临很多挑战。
However, there are many challenges in developing a good background subtraction algorithm for many factors such as changes in illumination should be considered in constructing a background model.
本文介绍了在风洞光学测压试验中应用虚拟仪器技术对模型表面温度和模型表面光照强度的测量方法。
The paper describes the measurement method for model surface temperature and model surface illumination strength in wind tunnel optical pressure measurement test by the virtual instruments.
文中算法采用HSV颜色空间，通过对背景统计模型中各颜色分量的有效分析和区别使用，能够很好地适应不同的环境光照条件。
HSV color model is also used and its color components are analyzed and treated separately so that the proposed algorithm can adapt to different environmental illumination conditions.
实验结果表明，上述改进可以有效提高模型匹配的效率和准确性以及模型对光照的适应性。
The experimental results show above methods have impressive effectiveness on the improvements of the model matching accuracy, efficiency, and illumination adaptability.
实验结果表明，上述改进可以有效提高模型匹配的效率和准确性以及模型对光照的适应性。
The experimental results show above methods have impressive effectiveness on the improvements of the model matching accuracy, efficiency, and illumination adaptability.
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