利用颜色主成分估计物体表面反射特性参数及照明光颜色的方法

A method estimating object surface reflection characteristic parameter and illuminative light with color dominical composition

彩色图像内物体的颜色是物体本体颜色和环境光照颜色叠加的结果。因此拍摄环境的照明变化会导致图像内目标颜色的变化,影响图像识别分析的结果。为了克服这个问题,采用了分离照明颜色和目标本体颜色的方法。首先对物体颜色分布直方图进行主成分分析,在此基础上把颜色直方图投影到这两个较大主成分向量所定义的平面上,并对其进行哈夫变换得到物体表面扩散反射向量与镜面反射向量。实验表明,这种方法对单色物体得到比较准确的结果。

Towcolor reflection hypothesis were utilized in the condition to don't know the illuminative light color to derive solid subject surface diffusion reflection vector and mirror reflection vector by dominical composition analysis method according to the distribution of subject color histogram. Based on this, the reflection characteristic vector of the subject surface was estimated, and the validity of this method was proved according to the experimentation.