void HexagonMirrorApp::update()
{
// update webcam image
if( mCapture && mCapture->checkNewFrame() )
mCaptureTexture = gl::Texture( mCapture->getSurface() );
}
void WayFinderApp::update()
{
if(getElapsedFrames() % FRAME_COUNT_THRESHOLD == 0) {
detected = false;
// TODO: Consider converting capture to grayscale or blurring then thresholding to improve performance.
if(capture && capture->checkNewFrame()) {
frame = toOcv(capture->getSurface());
//cv::Mat frameGray, frameBlurred, frameThresh, foreGray, backGray;
//cvtColor(frame, frameGray, CV_BGR2GRAY);
int blurAmount = 10;
//cv::blur(frame, frameBlurred, cv::Size(blurAmount, blurAmount));
//threshold(frameBlurred, frameThresh, 100, 255, CV_THRESH_BINARY);
// Get all contours.
//bg.operator()(frameThresh,fore);
bg.operator()(frame, fore);
bg.getBackgroundImage(back);
cv::erode(fore, fore, cv::Mat());
cv::dilate(fore, fore, cv::Mat());
cv::findContours(fore, contours, CV_RETR_EXTERNAL, CV_CHAIN_APPROX_NONE);
// Get largest contour: http://stackoverflow.com/questions/15012073/opencv-draw-draw-contours-of-2-largest-objects
unsigned largestIndex = 0;
unsigned largestContour = 0;
for(unsigned i = 0; i < contours.size(); i++) {
if(contours[i].size() > largestContour) {
largestContour = contours[i].size();
largestIndex = i;
}
}
vector<std::vector<cv::Point>> hack;
cv::Rect rect;
cv::Point center;
if(contours.size() > 0) {
hack.push_back(contours[largestIndex]);
// Find bounding rectangle for largest countour.
rect = boundingRect(contours[largestIndex]);
// Make sure the blog is large enough to be a track-worthy.
println("Rext area = " + boost::lexical_cast<std::string>(rect.area()));
if(rect.area() >= 5000) { // TODO: Tweak this value.
// Get center of rectangle.
center = cv::Point(
rect.x + (rect.width / 2),
rect.y + (rect.height / 2)
);
// Show guide.
spotlightCenter2D.x = (float)center.x;
spotlightCenter2D.y = (float)center.y;
spotlightCenter3D.x = (float)center.x;
spotlightCenter3D.y = (float)center.y;
//spotlightRadius = (rect.width + rect.y) / 2;
detected = true;
}
}
// When debug mode is off, the background should be black.
if(debugView) {
if(contours.size() > 0) {
cv::drawContours(frame, contours, -1, cv::Scalar(0, 0, 255), 2);
cv::drawContours(frame, hack, -1, cv::Scalar(255, 0, 0), 2);
rectangle(frame, rect, cv::Scalar(0, 255, 0), 3);
circle(frame, center, 10, cv::Scalar(0, 255, 0), 3);
}
mTexture = gl::Texture(fromOcv(frame));
}
}
// TODO: Create control panel for all inputs.
}
}