x In Testing Phase, video with .AVI format is given as input to system.
x Video consists of large collection of frames. User does not require all frames so the frame which
consists of useful information and which are non-redundant in video are considered as key frames.
Such key frames are extracted using entropy method.
x SIFT features are extracted from each key frame.
x After extracting SIFT features, next step is feature extraction by using HoG method.