Real time application to generate the differential time lapse video with edge detection

Abstract

The Time Lapse Technique is cinematography technique where by each film frame is captured at much slower rate than it will replay back. When replayed at normal rate, time appears to be moving faster and thus time lapsing. Time lapse technique is very powerful technique to document slowly changing/ developing/ moving phenomenon. The natural movements like sunrise, blooming of flowers periodic time lapse is used, while for uncertain activities like human activity, bird flying, animal movement etc aperiodic time lapse video is used. One of the classifications of aperiodic time lapse video is differential time lapse video. In differential time lapse video, each frame are compared with previously last stored frame, If some information/movement is found in the frame than frame is stored and considered as last stored frame, else frame is discarded. The quality of differential time lapse video depends on the frame selection criterion. In differential time lapse video frame selection criterion can be pixel-to-pixel bit mapping technique, motion detection technique, edge comparison technique etc. The edge detection criterion is used as frame selection criterion to generate differential time lapse video in this paper. In application of generation of differential time lapse video, the different edge detection technique is compared. In this paper, MATLAB based algorithm is used to generate differential time lapse video where frame selection criterions are different edge detection technique.