讨论空间曲面的表达和描述方法，给出了利用不变矩描述空间曲面的方法。
The expression and description of space surface is demonstrated. Invariant moments are used to describe the surface.
针对该问题，引入模式识别中的不变矩概念，提出基于不变矩的空间小目标检测方法。
Focus on this problem, a detection method of space small targets is presented based on moment invariant which is a concept of pattern recognition.
不变矩多项式和不变矩多项式空间概念的引入，可以赋予不变矩多项式空间代数结构特征。
Also some concepts as moment invariants polynomial and moment invariants polynomial space were discussed so as to characterize its algebra structure.
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