lebron-jian / computervisionpractice Goto Github PK
View Code? Open in Web Editor NEWA collection of notes, codes, and pictures I have related to computer vision
A collection of notes, codes, and pictures I have related to computer vision
https://www.cnblogs.com/wj-1314/p/9800272.html
兄弟,下面这部分 prewitt和sobel是不是写反了啊
_1.6 Sobel算子,Robert算子,prewitt算子的比较
Sobel算子是滤波算子的形式来提取边缘,X,Y方向各用一个模板,两个模板组合起来构成一个梯度算子。X方向模板对垂直边缘影响最大,Y方向模板对水平边缘影响最大。Robert算子是一种梯度算子,它用交叉的查分表示梯度,是一种利用局部差分算子寻找边缘的算子,对具有陡峭的低噪声的图像效果最好。
prewitt算子是加权平均算子,对噪声有抑制作用,但是像素平均相当于对图像进行的同滤波,所以prewitt算子对边缘的定位不如robert算子。_
具体图片的描述为:一个竖着的黑板,然后正上方有一个摄像头,拍出来的是一个畸形的图片,我试过自己矫正,但是效果不是很好,需要您的帮助,我的联系邮箱为:[email protected]。谢谢您!
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