METHOD, DEVICE AND COMPUTER PROGRAM PRODUCT FOR DEMULTIPLEXING OF VIDEO IMAGES

摘要

A method for demultiplexing digital video data which originates from multipl e sources in which the multiplexed images are not indexed nor is there identification information provided to differentiate sources. The sources ar e generally cameras which may be stationary cameras or moving cameras that rotate as are commonly used in the surveillance industry. A first set of digital video data representative of a first image is retrieved from a memor y source or from a video tape. The first set of digital video data is stored t o a memory location associated with a first source. The first set of video dat a is also identified as representative video data of the first source. A secon d set of digital video data representative of a current image is then retrieve d. A difference ratio is calculated using the representative digital video data and the current set of digital video data. If the difference ratio is above a threshold, a display query requiring response for classifying the current digital video data as belonging to an identified source or originating from a new source is presented to a user of the system. If a response is received indicating that the current set of digital video data is associated with a n ew source, the current set of digital video data is stored to a second memory location associated with the second source. This current set of digital vide o data is then identified as the representative video data for the second sour ce.