A real-time scene change detector for the review of video images
A small, simple image processing system is presented which enables the detection of scene changes in real-time sequences of video images. Such sequences may be produced by a video camera during on-site surveillance or be played back from a video cassette recorder for reviewing. The system detects scene changes by reading pixel profiles along some user defined polylines and cross-correlating them with the corresponding profiles of a reference image. If the correlation factors of a specified set of profiles drop below their thresholds, an alarm is triggered and the reference image is updated. The cross-correlation technique makes the detector rather insensitive to changes in scene illumination. A prototype system, running on an IBM-PC/AT with plug-in image processing board, has been successfully tested on video images recorded in a plant.
- Research Organization:
- Commission of the European Communities, JRC Ispra (IT)
- OSTI ID:
- 6186476
- Report Number(s):
- CONF-880631-
- Journal Information:
- Nucl. Mater. Manage. Annu. Meet. Proc.; (United States), Journal Name: Nucl. Mater. Manage. Annu. Meet. Proc.; (United States) Vol. 17; ISSN NUMMB
- Country of Publication:
- United States
- Language:
- English
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Inspection
& Accountability-- Technical Aspects
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ALARM SYSTEMS
AUTOMATION
COMPUTERS
IBM COMPUTERS
IMAGE PROCESSING
IMAGES
MAGNETIC STORAGE DEVICES
MAGNETIC TAPES
MEMORY DEVICES
NUCLEAR FACILITIES
PHYSICAL PROPERTIES
PROCESSING
REAL TIME SYSTEMS
SURVEILLANCE
VIDEO TAPES