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Added a sample to show usage of the class.

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This commit is contained in:
Daniel Angelov 2013-07-13 04:09:14 +03:00
parent e51e00ac5f
commit 6bd5e12be3
3 changed files with 59 additions and 7 deletions
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2
modules/imgproc/include/opencv2/imgproc.hpp
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@ -899,7 +899,7 @@ public:
* @param lines2 The second lines that need to be drawn. Color - Red.
* @return The number of mismatching pixels between lines1 and lines2.
*/
static int compareSegments(cv::Size& size, const std::vector<cv::Vec4i>& lines1, const std::vector<cv::Vec4i> lines2, cv::Mat* image = 0);
static int compareSegments(const cv::Size& size, const std::vector<cv::Vec4i>& lines1, const std::vector<cv::Vec4i> lines2, cv::Mat* image = 0);
private:
cv::Mat image;

14
modules/imgproc/src/lsd.cpp
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@ -957,13 +957,15 @@ void LSD::drawSegments(cv::Mat& image, const std::vector<cv::Vec4i>& lines)
}
}
int LSD::compareSegments(cv::Size& size, const std::vector<cv::Vec4i>& lines1, const std::vector<cv::Vec4i> lines2, cv::Mat* image)
{
if (image && image->size() != size) size = image->size();
CV_Assert(size.area());
Mat_<uchar> I1 = Mat_<uchar>::zeros(size);
Mat_<uchar> I2 = Mat_<uchar>::zeros(size);
int LSD::compareSegments(const cv::Size& size, const std::vector<cv::Vec4i>& lines1, const std::vector<cv::Vec4i> lines2, cv::Mat* image)
{
Size sz = size;
if (image && image->size() != size) sz = image->size();
CV_Assert(sz.area());
Mat_<uchar> I1 = Mat_<uchar>::zeros(sz);
Mat_<uchar> I2 = Mat_<uchar>::zeros(sz);
// Draw segments
for(unsigned int i = 0; i < lines1.size(); ++i)

50
samples/cpp/lsd_lines.cpp Normal file
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@ -0,0 +1,50 @@
#include <iostream>
#include <string>
#include "opencv2/core/core.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/highgui/highgui.hpp"
using namespace std;
using namespace cv;
int main(int argc, char** argv)
{
if (argc != 2)
{
std::cout << "lsd_lines [input image]" << std::endl;
return false;
}
std::string in = argv[1];
Mat image = imread(in, CV_LOAD_IMAGE_GRAYSCALE);
// Create and LSD detector with std refinement.
LSD lsd_std(LSD_REFINE_STD);
double start = double(getTickCount());
vector<Vec4i> lines_std;
lsd_std.detect(image, lines_std);
double duration_ms = (double(getTickCount()) - start) * 1000 / getTickFrequency();
std::cout << "OpenCV STD (blue) - " << duration_ms << " ms." << std::endl;
// Create an LSD detector with no refinement applied.
LSD lsd_none(LSD_REFINE_NONE);
start = double(getTickCount());
vector<Vec4i> lines_none;
lsd_none.detect(image, lines_none);
duration_ms = (double(getTickCount()) - start) * 1000 / getTickFrequency();
std::cout << "OpenCV NONE (red)- " << duration_ms << " ms." << std::endl;
std::cout << "Overlapping pixels are shown in purple." << std::endl;
Mat difference = Mat::zeros(image.size(), CV_8UC1);
LSD::compareSegments(image.size(), lines_std, lines_none, &difference);
imshow("Line difference", difference);
Mat drawnLines(image);
LSD::drawSegments(drawnLines, lines_std);
imshow("Standard refinement", drawnLines);
waitKey();
return 0;
}