I'm trying to show LiveView image in real time. I use EDSDK 2.14 + Qt5 + opencv+mingw32 under Windows. I'm not very sophisticated in image processing so now I have the following problem. I use example from Canon EDSDK and all was ok until this part of code:
//
// Display image
//
I googled a lot of examples but all of them was written on C# or MFC or VB. Also I found advise to use libjpegTurbo for decompressing image and then showing it using opencv. I tried to use libjpegTurbo but failed to undestand what to do :(. Maybe somebody here have code example of the conversion LiveView stream to opencv Mat or QImage (because I use Qt)?
Based on the Canon EDSDKs example, you may append your EdsStreamRef 'stream' data with its correct length into a QByteArray. Then, use for example the following to parse the raw data from the QByteArray as a JPG into a new QImage:
QImage my_image = QImage::fromData(limagedata,"JPG"); Once it's in a QImage you can convert it into a OpenCV cv::Mat (see How to convert QImage to opencv Mat)