int main(
int argc,
char** argv)
{
const char* default_file = "sudoku.png";
const char* filename = argc >=2 ? argv[1] : default_file;
Mat src = imread( samples::findFile( filename ), IMREAD_GRAYSCALE );
printf(" Error opening image\n");
printf(" Program Arguments: [image_name -- default %s] \n", default_file);
return -1;
}
Canny(src, dst, 50, 200, 3);
cvtColor(dst, cdst, COLOR_GRAY2BGR);
vector<Vec2f> lines;
HoughLines(dst, lines, 1,
CV_PI/180, 150, 0, 0 );
for( size_t i = 0; i < lines.size(); i++ )
{
float rho = lines[i][0], theta = lines[i][1];
double a = cos(theta), b = sin(theta);
double x0 = a*rho, y0 = b*rho;
line( cdst, pt1, pt2,
Scalar(0,0,255), 3, LINE_AA);
}
vector<Vec4i> linesP;
HoughLinesP(dst, linesP, 1,
CV_PI/180, 50, 50, 10 );
for( size_t i = 0; i < linesP.size(); i++ )
{
line( cdstP,
Point(l[0], l[1]),
Point(l[2], l[3]),
Scalar(0,0,255), 3, LINE_AA);
}
imshow("Source", src);
imshow("Detected Lines (in red) - Standard Hough Line Transform", cdst);
imshow("Detected Lines (in red) - Probabilistic Line Transform", cdstP);
waitKey();
return 0;
}
n-dimensional dense array class
Definition mat.hpp:950
CV_NODISCARD_STD Mat clone() const
Creates a full copy of the array and the underlying data.
bool empty() const
Returns true if the array has no elements.
_Tp y
y coordinate of the point
Definition types.hpp:202
_Tp x
x coordinate of the point
Definition types.hpp:201
Template class for short numerical vectors, a partial case of Matx.
Definition matx.hpp:379
int cvRound(double value)
Rounds floating-point number to the nearest integer.
Definition fast_math.hpp:200
#define CV_PI
Definition cvdef.h:382
int main(int argc, char *argv[])
Definition highgui_qt.cpp:3