Introduction to programming with OpenCV - Department of Computer Science | IIT College of Science | The purpose of this document is to get you started quickly with OpenCV without having to go through lengthy reference manuals. Once you understand these basics you will be able to consult the OpenCV manuals on a need basis.
OpenCV: Image Processing and Computer Vision Reference Manual Canny Implements Canny algorithm for edge detection void cvCanny( const CvArr* image, CvArr* edges, double threshold1, double threshold2, int aperture_size=3 ); image Input image. edges Image to store the edges found by the function. threshold1 The ...
Learn OpenCV by Examples: Line Detection by Hough Line Transform HoughLines, OpenCV codes for Line Detection by Hough Line Transform, OpenCV example for Line detection ... Here "theta" is in radian. So we have to convert degree to radian. Here 170 degree = (CV_PI/180)*170 radian. We may not get perfect horizontal lines
Learn OpenCV by Examples: Basic drawing examples Basic drawing examples in OpenCV, Drawing a line, Drawing a Circle, Drawing an Ellipse, Drawing a Rectangle, Drawing a Filled Polygon, Putting Text in image, putText ... Drawing a Rectangle void rectangle(Mat& img, Point pt1, Point pt2, const Scalar& colo
Hough Circle Transform — OpenCV 2.4.9.0 documentation Hough Circle Transform The Hough Circle Transform works in a roughly analogous way to the Hough Line Transform explained in the previous tutorial. In the line detection case, a line was defined by two parameters . In the circle case, we need three paramet
Structural Analysis and Shape Descriptors — OpenCV 2.4.9.0 documentation findContours Finds contours in a binary image. C++: void findContours(InputOutputArray image, OutputArrayOfArrays contours, OutputArray hierarchy, int mode, int method, Point offset=Point()) C++: void findContours(InputOutputArray image, OutputArrayOfArra
Learning OpenCV - O'Reilly Media Learning OpenCV puts you right in the middle of the rapidly expanding field of computer vision. Written by the creators of OpenCV, the widely used free open-source library, this ...
OpenCV 2 Cookbook - Robert Laganière You will find here complimentary information about my book. This site will be regularly updated with new recipes, additional source code and results, revisions to next releases of OpenCV, etc. The book is based on OpenCV version 2.2. However all examples
A Basic Introduction to OpenCV for Image Processing 6 2. Image data structure in OpenCV Load and display an image in OpenCV: #include "cv.h" //main OpenCV functions #include "highgui.h" //OpenCV GUI functions¯include int main() {/* declare a new IplImage pointer, the basic image data structure in ...
Computer vision with iOS Part 1: Building an OpenCV framework — Aptogo Introduction The example project Using the OpenCV framework in your own projects Rebuilding the OpenCV framework Update: Nov 28 2011 – The OpenCV framework has been rebuilt using opencv svn revision 7017 Update: Check out Part 2 of our series
