... 局部阈值分割 local threshold segmentation ; local-threshold segment 梯度阈值分割 gradient threshold value 阈值分割的 threshold segmentation ...
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首先计算文本区域的灰度-梯度共生矩阵，并根据目标函数快速地找到分割的灰度和梯度最佳阈值；
The gray-gradient co-occurrence matrix of the text region is calculated, and the optimum thresholds of segmented grayscale and gradient are found quickly according to the objective function.
在改进的边缘检测算法中，本文运用梯度算法对图像进行边缘增强，然后应用最佳阈值算法与形态学方法，取得较好的分割效果。
We use gradient algorithm to enhance cell borders in improving the edge detection algorithm. We achieve a better result through application adaptation threshold algorithm and mathematical morphology.
结合梯度和灰度这两种图像的本质特征，提出一种基于边界梯度控制的最大熵阈值分割方法。
Combining the two essential characteristics of the image, the gradient and the gray level, a threshold segmentation approach using maximum entropy with the gradient boundary control was proposed.
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