In the improved algorithm, the pre-processed image is smoothed and the proper gradient threshold is set to prevent the generation of insignificant regions.
该改进算法在预处理阶段对图像进行平滑操作并设置适当的梯度阈值，即减少了梯度图像中非重要区域的产生。
In the improved algorithm, the pre-processed image is smoothed and the proper gradient threshold is set to prevent the generation of insignificant regions.
该改进算法在预处理阶段对图像进行平滑操作并设置适当的梯度阈值，即减少了梯度图像中非重要区域的产生。
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