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Merge pull request #10446 from cabelo:style-dnn-yolo

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* add style draw in yolo

* fix sintaxe whitespace

* fix conversion from float to int

* sample refactoring

- minor code style fixes
- avoid confusing "bottom" names
- use cv::format
- always draw object detection/roi
This commit is contained in:
Alessandro de Oliveira Faria (A.K.A.CABELO) 2018-01-02 12:26:29 -02:00 committed by Alexander Alekhin
parent 940a90130d
commit 7abaae39ec
1 changed files with 29 additions and 37 deletions
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66
samples/dnn/yolo_object_detection.cpp
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@ -26,6 +26,7 @@ static const char* params =
"{ model | | model weights }"
"{ camera_device | 0 | camera device number}"
"{ source | | video or image for detection}"
"{ style | box | box or line style draw }"
"{ min_confidence | 0.24 | min confidence }"
"{ class_names | | File with class names, [PATH-TO-DARKNET]/data/coco.names }";
@ -78,7 +79,7 @@ int main(int argc, char** argv)
}
}
vector<string> classNamesVec;
vector<String> classNamesVec;
ifstream classNamesFile(parser.get<String>("class_names").c_str());
if (classNamesFile.is_open())
{
@ -87,6 +88,8 @@ int main(int argc, char** argv)
classNamesVec.push_back(className);
}
String object_roi_style = parser.get<String>("style");
for(;;)
{
Mat frame;
@ -114,11 +117,10 @@ int main(int argc, char** argv)
//! [Make forward pass]
vector<double> layersTimings;
double freq = getTickFrequency() / 1000;
double time = net.getPerfProfile(layersTimings) / freq;
ostringstream ss;
ss << "FPS: " << 1000/time << " ; time: " << time << " ms";
putText(frame, ss.str(), Point(20,20), 0, 0.5, Scalar(0,0,255));
double tick_freq = getTickFrequency();
double time_ms = net.getPerfProfile(layersTimings) / tick_freq * 1000;
putText(frame, format("FPS: %.2f ; time: %.2f ms", 1000.f / time_ms, time_ms),
Point(20, 20), 0, 0.5, Scalar(0, 0, 255));
float confidenceThreshold = parser.get<float>("min_confidence");
for (int i = 0; i < detectionMat.rows; i++)
@ -132,44 +134,34 @@ int main(int argc, char** argv)
if (confidence > confidenceThreshold)
{
float x = detectionMat.at<float>(i, 0);
float y = detectionMat.at<float>(i, 1);
float width = detectionMat.at<float>(i, 2);
float height = detectionMat.at<float>(i, 3);
int xLeftBottom = static_cast<int>((x - width / 2) * frame.cols);
int yLeftBottom = static_cast<int>((y - height / 2) * frame.rows);
int xRightTop = static_cast<int>((x + width / 2) * frame.cols);
int yRightTop = static_cast<int>((y + height / 2) * frame.rows);
float x_center = detectionMat.at<float>(i, 0) * frame.cols;
float y_center = detectionMat.at<float>(i, 1) * frame.rows;
float width = detectionMat.at<float>(i, 2) * frame.cols;
float height = detectionMat.at<float>(i, 3) * frame.rows;
Point p1(cvRound(x_center - width / 2), cvRound(y_center - height / 2));
Point p2(cvRound(x_center + width / 2), cvRound(y_center + height / 2));
Rect object(p1, p2);
Rect object(xLeftBottom, yLeftBottom,
xRightTop - xLeftBottom,
yRightTop - yLeftBottom);
Scalar object_roi_color(0, 255, 0);
rectangle(frame, object, Scalar(0, 255, 0));
if (objectClass < classNamesVec.size())
if (object_roi_style == "box")
{
ss.str("");
ss << confidence;
String conf(ss.str());
String label = String(classNamesVec[objectClass]) + ": " + conf;
int baseLine = 0;
Size labelSize = getTextSize(label, FONT_HERSHEY_SIMPLEX, 0.5, 1, &baseLine);
rectangle(frame, Rect(Point(xLeftBottom, yLeftBottom ),
Size(labelSize.width, labelSize.height + baseLine)),
Scalar(255, 255, 255), CV_FILLED);
putText(frame, label, Point(xLeftBottom, yLeftBottom+labelSize.height),
FONT_HERSHEY_SIMPLEX, 0.5, Scalar(0,0,0));
rectangle(frame, object, object_roi_color);
}
else
{
cout << "Class: " << objectClass << endl;
cout << "Confidence: " << confidence << endl;
cout << " " << xLeftBottom
<< " " << yLeftBottom
<< " " << xRightTop
<< " " << yRightTop << endl;
Point p_center(cvRound(x_center), cvRound(y_center));
line(frame, object.tl(), p_center, object_roi_color, 1);
}
String className = objectClass < classNamesVec.size() ? classNamesVec[objectClass] : cv::format("unknown(%d)", objectClass);
String label = format("%s: %.2f", className.c_str(), confidence);
int baseLine = 0;
Size labelSize = getTextSize(label, FONT_HERSHEY_SIMPLEX, 0.5, 1, &baseLine);
rectangle(frame, Rect(p1, Size(labelSize.width, labelSize.height + baseLine)),
object_roi_color, CV_FILLED);
putText(frame, label, p1 + Point(0, labelSize.height),
FONT_HERSHEY_SIMPLEX, 0.5, Scalar(0,0,0));
}
}