Because the images edge can be affected by noise more easily than the region feature, defect region-detection is proposed by combining mathematics morphology and optimal threshold method.
鉴于图像边缘特征易受噪声影响，而区域特征受噪声影响要小得多，提出利用数学形态学和最佳阈值分割相结合的方法来实现缺陷区域提取。
Because the images edge can be affected by noise more easily than the region feature, defect region - detection is proposed by combining mathematics morphology and optimal threshold method.
鉴于图像边缘特征易受噪声影响，而区域特征受噪声影响要小得多，提出利用数学形态学和最佳阈值分割相结合的方法来实现缺陷区域提取。
Improve a 3d model retrieval method based on the local distinctive region feature which can improve the retrieval effectiveness.
改进一种基于局部区分区域特征的三维模型检索方法，提高了检索效率。
Secondly, the method of region feature extraction and optimal feature selection are studied based on PCA, and the effective features are constructed for the target by the analysis of the PCA.
其次，本文研究了区域形状特征提取及基于PCA的特征选择方法，通过对区域特征进行优化选择，构造准确描述目标特性且维数较低的特征。
Sample grids are formed in the object region. Feature matrixes are computed through relative quantization.
在目标区域上形成采样网格，通过相对量化提取结构特征矩阵。
Sample grids are formed in the object region. Feature matrixes are computed through relative quantization.
在目标区域上形成采样网格，通过相对量化提取结构特征矩阵。
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