图像的显著区域能代表图像的主要内容，提取图像的显著区域在图像检索、敏感图像识别等方面有重要的作用。
Image salient regions may express the main content of image. Extraction of the salient regions in image plays an important role in searching image and identifying sensitive image.
图像边缘检测是图像分割、图像识别的基础，传统的边缘检测方法对噪声非常敏感。
The image edge detection is the basis of image segmentation and image recognition. But the traditional methods of image edge detection are sensitive to noise.
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