例句與用法

1. 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
   結合光度學原理，從實驗研究入手，通過用數字相機實際拍攝的典型曲面(球面)的二維灰度圖像，應用非線性最小二乘優(yōu)化方法研究確定了現有的lambert 、 phong 、 torrance - sparrow和cook - torrance四種常用局部光照模型的光照參數，利用統(tǒng)計分析原理分析了這四種光照模型在當前實驗條件下對實際圖像灰度數據的擬合精度，并對擬合精度較高的torrance - sparrow光照模型加以完善和改進，發(fā)展出一種適合于曲面測量的改進光照模型。