Actually i'm new on Raspberry and OpenCv,I work on a person counting system with cameras, so I have to capture faces at the entrance and the exit and do the matching and calculate the duration of every visit. So, i have already detected faces with the camera Pi using OpenCv and c++ ( just real time face detection ) and now i want to capture and store just faces detected in an sqlite database. i don't need the whole image, just faces already detected. Thanks