Bounding circle and rectangles (upright and rotated) for the ellipse detected using RANSAC凸包一组2D 点的凸包是包围所有点的最小凸闭合轮廓。因为它是凸的,所以连接凸壳上任意两点的线不与壳边界相交。因为它必须是最小的,所以一组点的凸包是这个集合的子集。OpenCV 函数convexHull()可以为一组点计算外壳。...
复制 int sw = smallSize.width; int sh = smallSize.height; Mat mask, maskPlusBorder; maskPlusBorder = Mat::zeros(sh+2, sw+2, CV_8UC1); mask = maskPlusBorder(Rect(1,1,sw,sh)); // mask is in maskPlusBorder. resize(edge, mask, smallSize); // Put edges in both of them. 边...
class LineFinder { private: // original image cv::Mat img; // vector containing the end points // of the detected lines std::vector<cv::Vec4i> lines; // accumulator resolution parameters double deltaRho; double deltaTheta; // minimum number of votes that a line // must receive before...
class cv::Feature2D : public cv::Algorithm { public: virtual void detect( cv::InputArray image, // Image on which to detect vector< cv::KeyPoint >& keypoints, // Array of found keypoints cv::InputArray mask = cv::noArray() ) const; virtual void detect( cv::InputArrayOfArrays image...
img=img[:,0:cols-1]returnimgif__name__=='__main__':# Make sure the sizeofthe input image is reasonable.# Large images take a lotoftime to be processed.# Recommended size is 640x480\.img_input=cv2.imread(sys.argv[1])# Use a small number togetstarted.Once yougetan ...
void MarkerDetector::findCandidates ( const ContoursVector& contours, std::vector<Marker>& detectedMarkers ) { std::vector<cv::Point> approxCurve; std::vector<Marker> possibleMarkers; // For each contour, analyze if it is a parallelepiped likely to be the marker for (size_t i=0; i<...
img1,img2 - Grayscale images kp1,kp2 - Detected list of keypoints through any of the OpenCV keypoint detection algorithms matches - A list of matches of corresponding keypoints through any OpenCV keypoint matching algorithm """ # Create a new output image that concatenates the two images tog...
原文:OpenCV 3.x with Python By Example 协议:CC BY-NC-SA 4.0 译者:飞龙 本文来自【ApacheCN 计算机视觉 译文集】,采用译后编辑(MTPE&...
OpenCV 支持更多的特征描述符,例如,(来自加速段测试的特征(FAST),二进制鲁棒独立基本特征(BRIEF)和定向的 FAST 和旋转 BRIEF(ORB),后者是 SIFT 或 SURF 的替代品。使用SURF 检测图像中的特征在本章的其余部分中,我们将使用 SURF 检测器。SURF 算法可以粗略地分为两个不同的步骤:检测兴趣点和制定描述符。 SURF...
# The detected objects are returned as a list of rectangles. #cv2.CascadeClassifier.detectMultiScale(image, scaleFactor, minNeighbors, flags, minSize, maxSize) #scaleFactor – Parameter specifying how much the image size is reduced at each image scale. ...