A moving image Vd consists of a plurality of frames F.sub.1 F.sub.12. A
scene change SC of the moving image Vd is detected according to change in
each frame regarding to brightness information of image, and the
plurality of frames are divided into frame groups FG1 (F.sub.1 F.sub.8)
and FG2 (F.sub.9 F.sub.12) each having substantially the same scene at
the scene change as a boundary. Then, with respect to the frame group
FG1, every three frames, F.sub.1, F.sub.4, F.sub.7 are sampled to execute
scene determination, and a most frequent scene is determined as a common
scene of the frame group. Consequently, scene determination results for
sufficiently scene-changed frames F.sub.4, F.sub.7 interposed between
frames F.sub.1, F.sub.12 of both ends of the frame group FG1 can be
utilized, so that it is possible to determine the common scene with high
accuracy.