FacePtr SkyDome::CreateDomeFace(int i1, int i2, int i3, ITextureResourcePtr texture) {
Vector<3,float> pos1 = positions[i1];
Vector<3,float> pos2 = positions[i2];
Vector<3,float> pos3 = positions[i3];
FacePtr face = FacePtr(new Face(pos1, pos2, pos3));
face->texc[0] = texCoords[i1];
face->texc[1] = texCoords[i2];
face->texc[2] = texCoords[i3];
face->mat->texr = texture;
return face;
}
QList<FacePtr> FaceDetector::detect(const MatPtr image) {
// Make grayscaled version of the image, and equalize the histogram
// which normalizes the brightness and increases the contrast in the
// image.
cv::Mat grayImg;
cvtColor(*image.get(), grayImg, cv::COLOR_BGR2GRAY);
equalizeHist(grayImg, grayImg);
// Detect faces with scale factor 1.1, minimum 3 neighbors and
// minimum 80x80 face size.
std::vector<cv::Rect> faces;
faceCas.detectMultiScale(grayImg, faces, 1.1, 3, 0, cv::Size(80, 80));
QList<FacePtr> results;
for (auto it = faces.begin(); it != faces.end(); ++it) {
const auto &f = *it;
auto face = FacePtr(new Face);
face->setFace(f);
// Detect two eyes for each face with scale factor 1.1, 3
// min. neighbors and min size of 30x30.
cv::Mat facePart = grayImg(f);
std::vector<cv::Rect> eyes;
eyesCas.detectMultiScale(facePart, eyes, 1.1, 3, 0, cv::Size(30, 30));
if (eyes.size() >= 2) {
// Take the two largest.
auto &eye1 = eyes[0], &eye2 = eyes[1];
int area1 = eye1.width * eye1.height,
area2 = eye2.width * eye2.height;
if (area1 > area2) {
qSwap<cv::Rect>(eye1, eye2);
qSwap<int>(area1, area2);
}
for (int i = 2; i < eyes.size(); i++) {
const auto &eye = eyes[i];
int area = eye.width * eye.height;
if (area > area1 && area < area2) {
eye1 = eye;
area1 = area;
}
else if (area > area2 && area < area1) {
eye2 = eye;
area2 = area;
}
else if (area > area1 && area > area2) {
eye1 = eye;
area1 = area;
qSwap<cv::Rect>(eye1, eye2);
qSwap<int>(area1, area2);
}
}
// Since we are only looking at the sub-region of the face we
// need to convert into image coordinates.
eye1.x += f.x; eye1.y += f.y;
eye2.x += f.x; eye2.y += f.y;
face->setEyes(eye1, eye2);
}
results << face;
}
return results;
}
