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c++ Programming Glossary: mat

Executing cv::warpPerspective for a fake deskewing on a set of cv::Point

http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint

std using namespace cv int main int argc char argv cv Mat src cv imread argv 1 1 After some magical procedure these are.. point not_a_rect_shape 0 int n int not_a_rect_shape.size Mat draw src.clone polylines draw point n 1 true Scalar 0 255 0.. rectangle out of that info RotatedRect box minAreaRect cv Mat not_a_rect_shape std cout Rotated box set to box.boundingRect..

OpenCV C++/Obj-C: Detecting a sheet of paper / Square Detection

http://stackoverflow.com/questions/8667818/opencv-c-obj-c-detecting-a-sheet-of-paper-square-detection

1e 10 std vector std vector cv Point findSquaresInImage cv Mat _image std vector std vector cv Point squares cv Mat pyr timg.. cv Mat _image std vector std vector cv Point squares cv Mat pyr timg gray0 _image.size CV_8U gray int thresh 50 N 11 cv.. 0 cv Canny gray0 gray 0 thresh 5 cv dilate gray gray cv Mat cv Point 1 1 else gray gray0 l 1 255 N cv findContours gray..

Why is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513?

http://stackoverflow.com/questions/11413855/why-is-transposing-a-matrix-of-512x512-much-slower-than-transposing-a-matrix-of

is transposing a matrix of 512x512 much slower than transposing a matrix of 513x513.. a matrix of 512x512 much slower than transposing a matrix of 513x513 After conducting some experiments on square matrices.. of 513x513 After conducting some experiments on square matrices of different sizes a pattern came up. Invariably transposing..

How to link opencv in QtCreator and use Qt library

http://stackoverflow.com/questions/15881913/how-to-link-opencv-in-qtcreator-and-use-qt-library

and sometimes it still remains unanswered. Sources of information are mainly these http www.laganiere.name opencvCookbook chap1s1_2.shtml.. http www.youtube.com watch v dgcXYQijV6c This is the summation of what I think one should can do. And now it works for me... using namespace std int main cout Hello World endl cv Mat mat mat cv imread img.JPG cvNamedWindow hello cv imshow hello mat..

opencv multi channel element access

http://stackoverflow.com/questions/1824787/opencv-multi-channel-element-access

c interface. How do I access elements of a multi channel matrix. for example Mat myMat size 3 3 CV_32FC2 for int i 0 i 3.. struct elem_ float f1 float f2 elem elem data 9 0.0f CvMat mat cvMat 3 3 CV_32FC2 data float f1 CV_MAT_ELEM mat elem row col.. CvMat mat cvMat 3 3 CV_32FC2 data float f1 CV_MAT_ELEM mat elem row col .f1 float f2 CV_MAT_ELEM mat elem row col .f2 CV_MAT_ELEM..

How to overload array index operator for wrapper class of 2D array?

http://stackoverflow.com/questions/1971201/how-to-overload-array-index-operator-for-wrapper-class-of-2d-array

#define ROW 3 #define COL 4 class Matrix private int mat ROW COL ..... ..... int main Matrix m int a m 0 1 reading m..

Serializing OpenCV Mat_<Vec3f>

http://stackoverflow.com/questions/4170745/serializing-opencv-mat-vec3f

a robotics research project where I need to serialize 2D matrices of 3D points basically each pixel is a 3 vector of floats... a 3 vector of floats. These pixels are saved in an OpenCV matrix and they need to be sent over inter process communication.. http cheind.wordpress.com 2011 12 06 serialization of cvmat objects using boost For whoever it may benefit Some code to..

Cycle through pixels with opencv

http://stackoverflow.com/questions/4504687/cycle-through-pixels-with-opencv

2d array to get the rgb values of each pixel Also would a mat be preferable over an iplimage for this operation c loops opencv..

How to set ROI in OpenCV?

http://stackoverflow.com/questions/8206466/how-to-set-roi-in-opencv

C alternative to cvSetImageROI output is a pointer to the mat whom I want the second image colourMiniBinMask copied upon Rect..

manipulating multidimensional arrays with functions in C++

http://stackoverflow.com/questions/9672731/manipulating-multidimensional-arrays-with-functions-in-c

in C using a function. I haven't been able to find information on how to pass a 2D array to a function by reference and.. The problem I am trying to solve has the following format. I have made a simple program for brevity. #include cstdlib.. #include iostream using namespace std void func int mat int k l for k 0 k 2 k for l 0 l 2 l mat k l 1 This is incorrect..