local illumination model meaning in English

局部光照模型

For consideration of principle of photometry and experimental research , with 2d gray image of typical surface ( spherical surface ) taken with digital camera , and by use of nonlinear least square optimizing method , the illumination parameters of four local illumination models , that are lambert , phong , torrance - sparrow and cook - torrance model , are determined . and with statistics analytical principle , regression analyses are made to compare the fitting precision of these illumination models under the current experiment condition . comparing torrance - sparrow model with others , an improved illumination model for measurement of surface is developed
结合光度学原理，从实验研究入手，通过用数字相机实际拍摄的典型曲面(球面)的二维灰度图像，应用非线性最小二乘优化方法研究确定了现有的lambert 、 phong 、 torrance - sparrow和cook - torrance四种常用局部光照模型的光照参数，利用统计分析原理分析了这四种光照模型在当前实验条件下对实际图像灰度数据的拟合精度，并对拟合精度较高的torrance - sparrow光照模型加以完善和改进，发展出一种适合于曲面测量的改进光照模型。