Image edge detection has a long research history as a disposing process of low-level vision, new theories and methods emerge in endlessly, but there is no method can fit all images as yet because of the difference of the images feature.

• 图像边缘检测作为一个低级视觉处理过程,有着很长的研究历史,新理论、新方法不断涌现,但鉴于所分析的图像特点的差异,目前为止尚没有一种方法可以适合于所有图像,根据应用环境的不同边缘检测算法的性能具有很大的互异性。