Image edge detection method based on edge enhancement operator

The invention relates to the field of image processing, in particular to an image edge detection method based on an edge enhancement operator. The method comprises the following specific steps of a. image acquisition, b. low-pass image filtering, c. image edge enhancement, d. image detection, e. image edge positioning, and f. image edge output. With the adoption of the image edge detection method based on the edge enhancement operator, high edge positioning accuracy can be achieved; edges in different sizes can respond better; missing detection can be reduced as far as possible; and an influence of an edge direction on the detection sensitivity is small.