Shot transition detection (or simply shot detection) also called cut detection is a field of video processing research. Its theme is the automated detection of transitions between shots in digital video for the purpose of temporal segmentation of videos.
Trigger transition detection is used to divide a movie into basic temporal units called triggers; A shot is a series of consecutive interrelated images taken contiguously by a single camera and representing a continuous action in time and space.
This operation is very useful in the software for post-production of videos. It is also a key step in automated indexing and content-based video retrieval or summary applications that provide efficient access to huge video files, An application can choose a representative image of each scene to create a visual view of the entire movie and by processing such indexes a search engine can process search elements such as "show me all the movies where there is a scene with a lion in her".
In general, cutting detection can not do anything that a human editor could not do manually, but it saves a lot of time. In addition, due to the increased use of digital video and hence the importance of the indexing applications mentioned above, automatic cut detection is very important today.