I have a question regarding where the face detection informaition is stored by Android. There seem to be two options :
1) The face detection information is stored along with Image as a part of EXIF metadata.
2) Android stores the detected faces information somewhere and retrives when user opens that particular image.
For option 1 I tried to fetch information with Metadata Extractor but there was no tag in particular that corresponds to face detection (correct me if I am wrong)
If it is option 2 how exactly I can filter gallary images according to faces tagged inside ?
Please give me some pointers.
Android have face detection api. You can just call findFaces method for bitmap. Also you cat use external libs and frameworks like OpenCV. According your points - which framefork you use for face detection?