I'm using Opencv for face detection from video stream but my problem is how to assign an id for each detected face? for example if in the current frame i have detected 3 faces so i have 3 unique id for each faces, now in the next frame if i have 4 detected faces then i need an other id to assign it to the new face!!!
how i can assign a unique id for each faces?
also how i can preserve the same id for each face and assign a new id for the new detected face?