...换类隐写；多特征技术；隐写检测；分类器 [gap=998]Key words】 spatial replacement steganography; multi-feature technique; steganography detection; classifier ...
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multi-feature fusion technique 多信息融合技术
By defining a region smoothness measure, the method firstly enhances peak-valley feature of image histogram by fuzzy set technique, and then segments image using adaptive multi-thresholding method.
该方法通过定义图像的平滑性测度，采用模糊增强技术对图像的灰度直方图进行增强，然后在增强的直方图上，利用自适应多阈值分割方法进行图像分割。
An approach of image feature representation that combines the multi-scale image decomposition technique and contour theory is proposed.
结合多尺度图像分解技术和等高线理论提出了一种图像特征表达方法。
According to the feature of network configuration and based on multi-port compensation technique, the approach uses the network branch equation to directly constitute the nodal impedance matrix.
通过分析配电网的有向拓扑图，建立了配电网的数学模型——节点线段关联矩阵，并在该数学模型的基础上，分析归纳出节点阻抗矩阵各元素的计算方法。
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