Scene cut detection from MPEG video stream coded without B pictures

In this paper we propose an algorithm that automatically detects clear scene cut locations from an MPEG-1 video bit streams coded with a GOP structure of M=1, without B pictures. The algorithm detects scene cuts at P type pictures by monitoring the percentage of Intramacroblocks per P picture. while scene cuts at I pictures are detected by matching the macroblocks type of the two P pictures at the GOP boundaries. A \Type Matching Parameter" (TMP) is developed to estimate the matching degree between the macroblock types of two P pictures. It is shown that the method is able to identify the location of scene cuts in P and I pictures with a high success rate.