Device and method for detecting specific object in image sequence as well as video camera equipment

Abstract

The invention provides a device and method for detecting a specific object in an image sequence. The device comprises a suspected object region detection unit, a misinformation high-occurrence region modeling unit and a post-processing unit, wherein, the suspected object region detection unit constructs a foreground template for an image of each frame in the image sequence within a preset time interval, and carries out interframe differential processing on the foreground template; if at least one suspected object region is detected by interframe differential processing, the misinformation high-occurrence region modeling unit determines a region meeting preset conditions in at least one suspected object region to be a misinformation high-occurrence region and constructs a misinformation high-occurrence region model so as to generate a misinformation high-occurrence region model library; the post-processing unit is used for matching each suspected object region which is not determined as the misinformation high-occurrence region with a corresponding model in the misinformation high-occurrence region model library so as to detect the specific object based on the unmatched suspected object region sequence; and if no suspected object region is detected by interframe differential processing, no specific object is determined to exist. The device and the method provided by the invention have the advantages of enhancing robustness for specific object detection and improving detection accuracy.

Description

technical field [0001] The invention belongs to the field of pattern recognition, and relates to technologies such as image processing and computer vision, and more specifically, relates to a device, a method and corresponding video camera equipment for detecting a specific object in an image sequence. Background technique [0002] Detection of specific objects in video image sequences is often of great value. For example, if a specific object is an abandoned object, the detection of this abandoned object is important for maintaining safety in public places. The abandoned object detection mentioned here refers to the detection of backpacks, briefcases, etc. that are intentionally discarded, placed in public places or some vital parts, and may contain explosives. Usually terrorists detonate the bomb contained in the bag by timing or remote control after placing such a package. This method of committing crimes has low cost, great harm, and high difficulty in prevention and d...

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