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The absence of a commonly adopted performance evaluation framework is hampering advances in the design of effective video trackers. In this paper, we present a single-score evaluation measure and a protocol to objectively compare trackers. The proposed measure evaluates tracking accuracy and failure, and combines them for both summative and formative(More)
To evaluate multitarget video tracking results, one needs to quantify the accuracy of the estimated target-size and the cardinality error as well as measure the frequency of occurrence of ID changes. In this paper, we survey existing multitarget tracking performance scores and, after discussing their limitations, we propose three parameter-independent(More)
We present an end-to-end approach for trajectory clustering from aerial videos that enables the extraction of motion patterns in urban scenes. Camera motion is first compensated by mapping object tra-jectories on a reference plane. Then clustering is performed based on statistics from the Discrete Wavelet Transform coefficients extracted from the(More)
Many approaches have been considered for automatic grading of brain tumors by means of pattern recognition with magnetic resonance spectroscopy (MRS). Providing an improved technique which can assist clinicians in accurately identifying brain tumor grades is our main objective. The proposed technique, which is based on the discrete wavelet transform (DWT)(More)
Haustral folds are a major source of false positives (FPs) in the Computer Aided Detection (CAD) of colorectal lesions. In this paper, a novel bottom-up data-driven approach is presented to globally analyze haustral folds. Unlike the earlier haustral fold detection methods that rely solely on local differential geometric computations, which can be(More)
In an Internet of Things (IoT) camera-based monitoring application the transmission of images away from the video sensors for processing poses security and privacy risks. Hence, there is a need for an advanced trusted user-centric monitoring system that pushes the application of security and privacy protection closer to the sensor itself and which enables(More)
This paper describes a new approach to detect and track maritime objects in real time. The approach particularly addresses the highly dynamic maritime environment, panning cameras, target scale changes, and operates on both visible and thermal imagery. Object detection is based on agglomerative clustering of temporally stable features. Object extents are(More)