/*
public callable function
to apply image effects set the getters on this class
*/
cv::Mat VideoProcessing::process(cv::Mat &frame) {
// save reference to the current frame, do NOT copy it into the memory
this->frame = frame;
if (picGreyscale == true) {
convertFrame2Grey();
}
if (picInvert == true) {
invertFrame();
}
if (picFlip == true) {
flipFrame();
}
if (picRotateAngle != 0) {
rotateFrame();
}
if (picEqualize == true) {
equalizeFrame();
}
if (picSharpen == true) {
sharpenFrame();
}
if (picCrop == true) {
cropFrame();
}
return this->frame;
}
/**
* Detect objects using cascade detection of haar-wavelets (haar cascade).
* A variant of Viola-Jones face detection framework.
*
* \param currframe Frame that one wants to detect objects.
*
* \param detectAfterRot Whether to rotate currframe by small angles
* during detection phase. Currently detection is done with haar cascade
* which is not rotation invariant (can not detect an object if it is
* presented rotated). Haar cascade could potentially detect object
* rotated by a very small angle (+/-15 degrees). Do detection on rotated
* frames and the straight frame in order to detect the object in
* much more angular variations.
*/
std::vector<cv::Rect>
ObjDetTrack::haarCascadeDetect(const cv::Mat& currframe, bool detectAfterRot)
{
cv::Mat frame_gray;
bool presuccess = detectPreProcess(currframe, frame_gray);
if(!presuccess){
return std::vector<cv::Rect>();
}
//put all detection results here
std::vector<cv::Rect> detResult;
//simple straight (no rotation) cascade face/object detection
std::vector<cv::Rect> straightDetResult = runAllCascadeOnFrame(frame_gray, 2, cv::Size(20*shrinkratio,20*shrinkratio));
//std::cout<<"detected =="<<(int)straightDetResult.size()<<"== straight"<<std::endl;
detResult.insert(detResult.end(), straightDetResult.begin(), straightDetResult.end());
//implements detection after small angle rotations here. Could be really slow
//Maybe only do this if no straight detResults
if(detectAfterRot){// && detResult.size() == 0){
std::vector<double> rotAngles;
rotAngles.push_back(-30);
rotAngles.push_back(30);
for(uint32_t ang_ind=0; ang_ind<rotAngles.size(); ang_ind++){
cv::Mat frameAfterRot;
cv::Mat revRotM = rotateFrame(frame_gray, frameAfterRot, rotAngles[ang_ind]);
std::vector<cv::Rect> rotDetResult = runAllCascadeOnFrame(frameAfterRot, 2, cv::Size(20*shrinkratio,20*shrinkratio));
std::ostringstream strs;
strs << rotAngles[ang_ind];
std::string anglestr = strs.str();
//std::cout<<"detected =="<<rotDetResult.size()<<"== sideways angle "<<rotAngles[ang_ind]<<std::endl;
std::vector<cv::Rect> revRotDetResult = revRotOnRects(rotDetResult, revRotM, frame_gray.size());
detResult.insert(detResult.end(), revRotDetResult.begin(), revRotDetResult.end());
}
}
//eliminate duplicates/overlapping detection
//they are defined as detection that are overlapping >50% area with other detection rectangles
removeOverlapWindows(detResult);
//std::cout<<"=post overlap elimination: detected "<<detResult.size()<<" faces/objects"<<std::endl;
//reverse downsampling of image, by resizing detection rectangles/windows
for(uint32_t i=0; i<detResult.size(); i++){
resizeRect(detResult[i], 1/shrinkratio, 1/shrinkratio);
}
return detResult;
}
bool EmulatedQemuCameraDevice::inWorkerThread()
{
/* Wait till FPS timeout expires, or thread exit message is received. */
WorkerThread::SelectRes res =
getWorkerThread()->Select(-1, 1000000 / mEmulatedFPS);
if (res == WorkerThread::EXIT_THREAD) {
LOGV("%s: Worker thread has been terminated.", __FUNCTION__);
return false;
}
/* Lets see if we need to generate a new frame. */
if ((systemTime(SYSTEM_TIME_MONOTONIC) - mLastRedrawn) >= mRedrawAfter) {
/*
* Time to generate a new frame.
*/
#if EFCD_ROTATE_FRAME
LOGV("%s: calld frame_type = rotateFrame():%d", __FUNCTION__, frame_type);
const int frame_type = rotateFrame();
switch (frame_type) {
case 0:
drawCheckerboard();
break;
case 1:
drawStripes();
break;
case 2:
drawSolid(mCurrentColor);
break;
}
#else
/* Draw the checker board. */
LOGV("%s: calld drawCheckerboard()", __FUNCTION__);
drawCheckerboard();
#endif // EFCD_ROTATE_FRAME
mLastRedrawn = systemTime(SYSTEM_TIME_MONOTONIC);
}
/* Timestamp the current frame, and notify the camera HAL about new frame. */
mCurFrameTimestamp = systemTime(SYSTEM_TIME_MONOTONIC);
LOGV("%s: calld mCameraHAL->onNextFrameAvailable(mCurrentFrame:%p", __FUNCTION__,mCurrentFrame);
mCameraHAL->onNextFrameAvailable(mCurrentFrame, mCurFrameTimestamp, this);
return true;
}
void MainGui::dispatchrotate(bool clockwise) {
if(currenthdr==NULL)
return;
rotateccw->setEnabled(false);
rotatecw->setEnabled(false);
QApplication::setOverrideCursor( QCursor(Qt::WaitCursor) );
pfs::Frame *rotated=rotateFrame(currenthdr->getHDRPfsFrame(),clockwise);
//updateHDR() method takes care of deleting its previous pfs::Frame* buffer.
currenthdr->updateHDR(rotated);
if (! currenthdr->NeedsSaving) {
currenthdr->NeedsSaving=true;
currenthdr->setWindowTitle(currenthdr->windowTitle().prepend("(*) "));
}
QApplication::restoreOverrideCursor();
rotateccw->setEnabled(true);
rotatecw->setEnabled(true);
}
