关键词: 图像处理, 亚像素, 边缘检测, 高斯拟合, 最小二乘法

Abstract: Aiming at the low in localization and sensitive to the noises of traditional edge detection algorithms, a sub-pixel edge detection algorithm based on the function curve fittings is proposed——Gauss Fitting of gradient direction sub-pixel edge detection algorithm. According to the gradient distribution of the picture, this text use gauss curves fitting the edges to realize sub-pixel localization. Compared this algorithm with other two algorithms, the text get that the running time of this algorithm is shorter, and the efficiency is relatively high.

Key words: Image Processing, Sub-pixel, Edge detection, Gauss fitting, Least square method