Combined Detection and Tracking of Moving Objects in Aerial Surveillance Images

摘要

This software implements a new probabilistic framework for integrated multi-target detection and tracking of small moving objects in image sequences, with specific application to tracking people in aerial images, in which image stabilization is inherently noisy. This approach introduces a new method for integrating the detection and tracking steps. First, instead of using only image information for detection, the output of the multiple hypothesis tracker is used to increase the likelihood of targets existing at certain image locations. These likelihoods are then utilized, along with a model of the image background, to calculate the probabilities of each pixel belonging to an exist- ing target, other foreground, or the background, in a Bayesian manner. These pixel-level probabilities both determine the detected measurements in the frame and influence the probabilities of hypothesized target tracks. This detection approach reduces missed detections to more robustly track objects and decreases sensitivity to user-selected thresholds on foreground.