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[ADD] contour of hand in calibration screen

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Sem van der Hoeven
2021-06-08 11:03:22 +02:00
parent bb68d98bfe
commit afd3e00ddb
3 changed files with 18 additions and 5 deletions
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11
src/computervision/FingerCount.cpp
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@@ -14,6 +14,7 @@
namespace computervision namespace computervision
{ {
FingerCount::FingerCount(void) { FingerCount::FingerCount(void) {
color_blue = Scalar(255, 0, 0); color_blue = Scalar(255, 0, 0);
color_green = Scalar(0, 255, 0); color_green = Scalar(0, 255, 0);
@@ -35,9 +36,6 @@ namespace computervision
if (input_image.channels() != 1) if (input_image.channels() != 1)
return contours_image; return contours_image;
vector<vector<Point>> contours;
vector<Vec4i> hierarchy;
findContours(input_image, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE); findContours(input_image, contours, hierarchy, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
// we need at least one contour to work // we need at least one contour to work
@@ -45,7 +43,7 @@ namespace computervision
return contours_image; return contours_image;
// find the biggest contour (let's suppose it's our hand) // find the biggest contour (let's suppose it's our hand)
int biggest_contour_index = -1; biggest_contour_index = -1;
double biggest_area = 0.0; double biggest_area = 0.0;
for (int i = 0; i < contours.size(); i++) { for (int i = 0; i < contours.size(); i++) {
@@ -156,6 +154,11 @@ namespace computervision
return contours_image; return contours_image;
} }
void FingerCount::DrawHandContours(Mat& image)
{
drawContours(image, contours, biggest_contour_index, color_green, 2, 8, hierarchy);
}
int FingerCount::getAmountOfFingers() int FingerCount::getAmountOfFingers()
{ {
return amount_of_fingers; return amount_of_fingers;

10
src/computervision/FingerCount.h
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@@ -31,7 +31,15 @@ namespace computervision
*/ */
int getAmountOfFingers(); int getAmountOfFingers();
void DrawHandContours(Mat& image);
private: private:
int biggest_contour_index;
vector<vector<Point>> contours;
vector<Vec4i> hierarchy;
// colors to use // colors to use
Scalar color_blue; Scalar color_blue;
Scalar color_green; Scalar color_green;
@@ -115,5 +123,7 @@ namespace computervision
* @param with_numbers if the numbers should be drawn with the points * @param with_numbers if the numbers should be drawn with the points
*/ */
void drawVectorPoints(Mat image, vector<Point> points, Scalar color, bool with_numbers); void drawVectorPoints(Mat image, vector<Point> points, Scalar color, bool with_numbers);
}; };
} }

2
src/computervision/ObjectDetection.cpp
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@@ -64,7 +64,7 @@ namespace computervision
DrawHandMask(&camera_frame); DrawHandMask(&camera_frame);
string hand_text = fingers_amount > 0 ? "open" : "closed"; string hand_text = fingers_amount > 0 ? "open" : "closed";
putText(camera_frame, hand_text, Point(10, 75), FONT_HERSHEY_PLAIN, 2.0, Scalar(255, 0, 255), 3); putText(camera_frame, hand_text, Point(10, 75), FONT_HERSHEY_PLAIN, 2.0, Scalar(255, 0, 255), 3);
finger_count.DrawHandContours(camera_frame);
hand_calibrator.DrawHandCalibrationText(camera_frame); hand_calibrator.DrawHandCalibrationText(camera_frame);
imshow("camera", camera_frame); imshow("camera", camera_frame);