activate_sa() | |- 1> Variables initalized |- 2> Read Video |- 3> while (cap.isOpened()) | |---- 4> if Frame % dth_frame |-------- a> Hog-Face-detection() | |---- 5> if tracker-in detection mode: |--------- a> Found faces ? |------------- i) preprocess() |------------- ii) track() | --- --- |------------- iii) |-recognize-| () | |---- 6> else: | |--------- if detected more faces ? - compare-with-tracked() |------------ if matched()-> set to recognize |------------ else()-> append to new-bbs | |--------- if new-bbs found() |-------------- initalize-track-new-bbs() | --- --- |-------------- |-recognize-| () | |---------- else() |-------------- if not-recognizing-yet() |------------------- preprocess() | --- --- |------------------- |-recognize-| () | |-------------- identify() |-------------- track()