拐点特征是模式识别中经常用到的一类不变量。
Invariant corner features are often used in pattern recognition.
其他的特性还包括类不变量、非空引用类型和加强的静态分析功能。
Other features include class invariants, non-nullable reference types, and enhanced static analysis capabilities.
基于特征不变量的方法，实现速度比较快，但都只适用于某一类图像。
The Feature invariant approaches can detect the human faces fast, but only some kind of face can be detected.
现有的静止图像人脸检测算法主要有四类：基于知识的方法、基于特征不变量的方法、基于模板匹配的方法和基于表象的方法。
The existing face detection methods can be classified into four categories: Knowledge-based methods, Feature invariant approaches, Template matching methods and Appearance-based methods.
本论文从可分(非纠缠)性的判别及局域幺正变换下的不变量的等价类的角度来研究量子纠缠的性质。
We have investigated the properties of entanglement by criterion of separability (non-entanglement) and equivalence of quantum states under local unitary transformations.
第二类见证向量来自于网的加模S-不变量。
The second kind of identification vectors comes from Modular-S-invariants.
第二类见证向量来自于网的加模S-不变量。
The second kind of identification vectors comes from Modular-S-invariants.
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