Multi-resolution video analysis and key feature preserving video reduction strategy for (real-time) vehicle tracking and speed enforcement systems

摘要

Systems and methods are disclosed that include a video-based analysis system that detects, tracks and archives vehicles in video stream data at multiple resolutions. The system includes an image capturing device that captures video stream data having video at a first high resolution. A vehicle detection module detects at least one vehicle within the video. A vehicle analysis module is configured to analyze the video and to extract one or more key vehicle features from the video to enable identification of a vehicle of interest (VOI) according to a set of predetermined criteria. A subsampling module creates a reduced resolution video stream in a second subsampled resolution that is lower than the first high resolution while maintaining the one or more extracted key features within the reduced resolution video stream in the first high resolution, and archives the reduced resolution video stream into a video database.

主权项

1. A video-based analysis system comprising:
an image capturing device that captures video stream data having video data frames at a first high resolution; a vehicle detection module that detects at least one vehicle within the video data frames; a vehicle analysis module that analyzes the video data frames containing the detected vehicle and to extract or tag one or more key vehicle features from the video data frames to enable identification of a vehicle of interest (VOI) according to a set of predetermined criteria, wherein the vehicle analysis module includes a vehicle of interest determination module that filters vehicles detected to determine which vehicles are VOIs according to the set of predetermined criteria that are selected for filtering vehicles detected depending upon a mode of operation, wherein the set of predetermined criteria includes a measured speed exceeding a speed threshold, a red light infraction, a stop sign infraction, wrong way driving, expired registration, and a tailgating violation; and a subsampling module that creates a reduced resolution video stream in a second subsampled resolution that is lower than the first high resolution while maintaining the one or more extracted key features within the reduced resolution video stream in the first high resolution, and archives the reduced resolution video stream into a video database.