Exemplo n.º 1
0
int sortCallback(const void * aa, const void * bb)
{
	const struct dirent ** a = (const struct dirent **)aa;
	const struct dirent ** b = (const struct dirent **)bb;

	return uStrNumCmp((*a)->d_name, (*b)->d_name);
}
cv::Mat CameraImages::captureImage()
{
	UDEBUG("");
	cv::Mat img;
	if(_dir->isValid())
	{
		if(_refreshDir)
		{
			_dir->update();
		}
		if(_startAt == 0)
		{
			const std::list<std::string> & fileNames = _dir->getFileNames();
			if(fileNames.size())
			{
				if(_lastFileName.empty() || uStrNumCmp(_lastFileName,*fileNames.rbegin()) < 0)
				{
					_lastFileName = *fileNames.rbegin();
					std::string fullPath = _path + _lastFileName;
					img = cv::imread(fullPath.c_str());
				}
			}
		}
		else
		{
			std::string fileName;
			std::string fullPath;
			fileName = _dir->getNextFileName();
			if(fileName.size())
			{
				fullPath = _path + fileName;
				while(++_count < _startAt && (fileName = _dir->getNextFileName()).size())
				{
					fullPath = _path + fileName;
				}
				if(fileName.size())
				{
					ULOGGER_DEBUG("Loading image : %s", fullPath.c_str());
#if CV_MAJOR_VERSION >=2 and CV_MINOR_VERSION >=4
					img = cv::imread(fullPath.c_str(), cv::IMREAD_UNCHANGED);
#else
					img = cv::imread(fullPath.c_str(), -1);
#endif
					UDEBUG("width=%d, height=%d, channels=%d, elementSize=%d, total=%d", img.cols, img.rows, img.channels(), img.elemSize(), img.total());

					// FIXME : it seems that some png are incorrectly loaded with opencv c++ interface, where c interface works...
					if(img.depth() != CV_8U)
					{
						// The depth should be 8U
						UWARN("Cannot read the image correctly, falling back to old OpenCV C interface...");
						IplImage * i = cvLoadImage(fullPath.c_str());
						img = cv::Mat(i, true);
						cvReleaseImage(&i);
					}
				}
			}
		}
	}
	else
	{
		UWARN("Directory is not set, camera must be initialized.");
	}

	unsigned int w;
	unsigned int h;
	this->getImageSize(w, h);

	if(!img.empty() &&
	   w &&
	   h &&
	   w != (unsigned int)img.cols &&
	   h != (unsigned int)img.rows)
	{
		cv::Mat resampled;
		cv::resize(img, resampled, cv::Size(w, h));
		img = resampled;
	}

	return img;
}
Exemplo n.º 3
0
int sortCallback( const dirent ** a,  const dirent ** b)
{
	return uStrNumCmp((*a)->d_name, (*b)->d_name);
}
Exemplo n.º 4
0
bool sortCallback(const std::string & a, const std::string & b)
{
	return uStrNumCmp(a,b) < 0;
}