Compared with the classical Lie method, it adds an invariantsurface condition in the formation. Consequently, it makes calculation easy and obtains more group-invariant solutions.
The color features which are irrespective to the light and can portray physical surface reflect properties that extracted in the image search process named color Invariant Descriptor.
在图像检索过程中提取与光照无关的、能够刻画物体表面物理反射特性的颜色特征，被称为颜色不变性描述。
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The expression and description of space surface is demonstrated. Invariant moments are used to describe the surface.