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HSV_rev01.cpp
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HSV_rev01.cpp
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#include <stdio.h>
#include <iostream>
#include "opencv2/core/core.hpp"
#include "opencv2/features2d/features2d.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include "opencv2/calib3d/calib3d.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/nonfree/nonfree.hpp"
using namespace cv;
using namespace std;
// GLOBAL VARIABLES
bool condition = true;
int thresholdValue;
const int FRAME_WIDTH = 640;
const int FRAME_HEIGHT = 480;
const int MIN_OBJECT_AREA = 30 * 30;
bool changePermission = true;
// Hue values range
int h_min = 0;
int h_max = 255;
// saturation values range
int s_min = 0;
int s_max = 255;
// Value values range
int v_min = 0;
int v_max = 255;
Mat frame, frame_gray;
vector<vector<Point>> contours;
vector<Vec4i> hierarchy;
int ractangleBoundsConstant = 50;
// GLOBAL VARIABLES END
void createAWindow() {
namedWindow("Threshold Image", CV_WINDOW_OPENGL);
}
void destroyTheWindow() {
destroyWindow("Threshold Image");
}
void hueMinValueChange(int value, void* userInfo) {
h_min = value;
}
void hueMaxValueChange(int value, void* userInfo) {
h_max = value;
}
void saturationMinValueChange(int value, void* userInfo) {
s_min = value;
}
void saturationMaxValueChange(int value, void* userInfo) {
s_max = value;
}
void valueMinValueChange(int value, void* userInfo) {
v_min = value;
}
void valueMaxValueChange(int value, void* userInfo) {
v_max = value;
}
void loadValuesToTrackBar() {
setTrackbarPos("Hue Min:", "Threshold Image", h_min);
setTrackbarPos("Hue Max:", "Threshold Image", h_max);
setTrackbarPos("Saturation Min:", "Threshold Image", s_min);
setTrackbarPos("Saturation Max:", "Threshold Image", s_max);
setTrackbarPos("Value Min:", "Threshold Image", v_min);
setTrackbarPos("Value Max:", "Threshold Image", v_max);
}
void createTheTrackerbar() {
createTrackbar("Hue Min:", "Threshold Image", 0, 255, hueMinValueChange);
createTrackbar("Hue Max:", "Threshold Image", 0, 255, hueMaxValueChange);
createTrackbar("Saturation Min:", "Threshold Image", 0, 255, saturationMinValueChange);
createTrackbar("Saturation Max:", "Threshold Image", 0, 255, saturationMaxValueChange);
createTrackbar("Value Min:", "Threshold Image", 0, 255, valueMinValueChange);
createTrackbar("Value Max:", "Threshold Image", 0, 255, valueMaxValueChange);
}
//void set_HSV_Values(int a, int b, int c, int d, int e, int f) {
//
// h_min = a;
// s_min = b;
// v_min = c;
//
// h_max = d;
// s_max = e;
// v_max = f;
//
//}
void closeImg() {
Mat strucElement = getStructuringElement(0, Size(15,15));
dilate(frame_gray, frame_gray, strucElement);
erode(frame_gray, frame_gray, strucElement);
}
int findLargetContourArea(vector<vector<Point>> _contours) {
int largestArea = 0, pos = 0;
for (int i = 0; i < _contours.size(); i++) {
int area = contourArea(_contours[i]);
if (area > largestArea) {
largestArea = area;
pos = i;
}
}
return pos;
}
int main() {
VideoCapture cap(0);
cap.set(CV_CAP_PROP_FRAME_WIDTH, FRAME_WIDTH);
cap.set(CV_CAP_PROP_FRAME_HEIGHT, FRAME_HEIGHT);
createAWindow();
createTheTrackerbar();
for(;;) {
cap >> frame;
cvtColor(frame, frame_gray, COLOR_BGR2HSV);
inRange( frame_gray, Scalar(h_min,s_min, v_min), Scalar(h_max, s_max, v_max), frame_gray);
closeImg();
closeImg();
imshow("Thresholded Image", frame_gray);
findContours(frame_gray, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE);
int pos = findLargetContourArea(contours);
if (contours.size() > 0) {
if (contourArea(contours[pos]) >= MIN_OBJECT_AREA) {
Rect data = boundingRect(contours[0]);
rectangle(frame, Point(data.x - ractangleBoundsConstant, data.y - ractangleBoundsConstant), Point(data.x + data.width + ractangleBoundsConstant, data.y + data.height + ractangleBoundsConstant), Scalar(0,255,0));
}
}
imshow("Threshold Image", frame);
int wait = waitKey(30);
if(wait >= 0) {
if (wait == 99) {
//set_HSV_Values(h_min, s_min, v_min, h_max, s_max, v_max);
cout << h_min << " " << s_min << " " << v_min << " " << h_max << " " << s_max << " " << v_max << endl;
changePermission = !changePermission;
destroyTheWindow();
createAWindow();
if (changePermission == true) {
createTheTrackerbar();
loadValuesToTrackBar();
}
}else {
cout << h_min << " " << s_min << " " << v_min << " " << h_max << " " << s_max << " " << v_max << endl;
break;
}
}
}
destroyAllWindows();
return 0;
}