英语翻译
Each two points in the image are made convolution by
using these two templates,and the template in the X
direction has a great influence on the vertical edge response
while the template in the Y direction has a great influence on
the horizontal edge response.The maximum of these two
convolutions is considered as the output of the point,and the
result of the operations is an edge amplitude image.
The Sobel Operator is defined as follows: