I'm trying to do a robust eye detection , the face dtection in this code is good at detecting face when it moves ,
but for eyes i have problem that it is not detecting eye properly as faces . What should I change to make eye detection robust ?
Thanks
#include "opencv2/objdetect/objdetect.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
#include <stdio.h>
using namespace std;
using namespace cv;
void detectAndDisplay(Mat frame);
string face_cascade_name = "haarcascade_frontalface_alt.xml";
string eye_cascade_name = "haarcascade_eye.xml";
CascadeClassifier face_cascade;
CascadeClassifier eye_cascade;
string window_name = "Capture - Face detection";
int filenumber;
void detectAndDisplay(Mat frame)
{
std::vector<Rect> faces;
std::vector<Rect> eyes;
Mat frame_gray;
Mat crop;
Mat res;
Mat gray;
cvtColor(frame, frame_gray, COLOR_BGR2GRAY);
equalizeHist(frame_gray, frame_gray);
face_cascade.detectMultiScale(frame_gray, faces, 1.1, 2, 0 | CASCADE_SCALE_IMAGE, Size(30, 30));
cv::Rect roi_b;
cv::Rect roi_c;
size_t ic = 0; int ac = 0;
size_t ib = 0; int ab = 0;
for (ic = 0; ic < faces.size(); ic++)
{
roi_c.x = faces[ic].x;
roi_c.y = faces[ic].y;
roi_c.width = (faces[ic].width);
roi_c.height = (faces[ic].height);
ac = roi_c.width * roi_c.height;
roi_b.x = faces[ib].x;
roi_b.y = faces[ib].y;
roi_b.width = (faces[ib].width);
roi_b.height = (faces[ib].height);
ab = roi_b.width * roi_b.height;
if (ac > ab)
{
ib = ic;
roi_b.x = faces[ib].x;
roi_b.y = faces[ib].y;
roi_b.width = (faces[ib].width);
roi_b.height = (faces[ib].height);
}
crop = frame(roi_b);
resize(crop, res, Size(128, 128), 0, 0, INTER_LINEAR); cvtColor(crop, gray, CV_BGR2GRAY);
Point pt1(faces[ic].x, faces[ic].y); Point pt2((faces[ic].x + faces[ic].height), (faces[ic].y + faces[ic].width));
rectangle(frame, pt1, pt2, Scalar(0, 255, 0), 2, 8, 0);
Mat eye_roi = frame_gray(faces[ic]);
eye_cascade.detectMultiScale(eye_roi, eyes, 1.1, 2, 0 | CV_HAAR_SCALE_IMAGE, Size(30, 30));
for (size_t j = 0; j < eyes.size(); j++)
{
Point center(faces[ic].x + eyes[j].x + eyes[j].width*0.5, faces[ic].y + eyes[j].y + eyes[j].height*0.5);
int radius = cvRound((eyes[j].width + eyes[j].height)*0.25);
circle(frame, center, radius, Scalar(255, 0, 0), 2, 8, 0);
}
}
imshow("original", frame);
if (!crop.empty())
{
imshow("detected", crop);
}
else
destroyWindow("detected");