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
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大佬，像那种银行卡、身份证四角有弧度的要怎么处理呢，有好的解决思路吗？
高人，请问如何在照片中定位一个特定的形状，并计算其位置和转角？
照片的拍照距离和位置可以调整，但是背景比较复杂。想在照片中将特定的形状（一个切了部分的圆）找出来，并标记其的转角（以切口水平为0度转角）。
麻烦看下文章内容有没有问题（OpenCV计算机视觉学习（6）——图像梯度计算&边缘检测（Sobel算子，scharr算法，Laplacian算子，Canny算子））
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。_
您好，我想问一下，像那种俯拍的图片有什么方法可以矫正吗？
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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