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—Android occupies the absolute dominant position in mobile operating system and has the largest market share. Meanwhile, Android faces the risk of malicious insiders leaking sensitive information. In this paper, we present DefDroid, a repackaging tool for enforcing security policies by modifying Android applications without root privilege. The main(More)
Fish tracking is an important step for video based analysis of fish behavior. Due to severe body deformation and mutual occlusion of multiple swimming fish, accurate and robust fish tracking from video image sequence is a highly challenging problem. The current tracking methods based on motion information are not accurate and robust enough to track the(More)
This paper proposes a reliable 3D fish tracking method using a novel master-slave camera setup. Instead of conventional dynamic models that rely on prior knowledge about target kinematics, the proposed method learns the kinematic model with a Long Short-Term Memory (LSTM) network. On this basis, the 3D state of fish at each moment is predicted by LSTM(More)
Multi-camera three-dimensional (3D) tracking technology is the most effective gateway to acquire quantitative motion data for studying behaviors of flying swarms. While the state-of-the-art tracking methods usually estimate positions of flying targets, here we present the 3D tracking method which estimates both a target's position and its orientation for(More)
This paper proposes a computer-aided cirrhosis diagnosis system to diagnose cirrhosis based on ultrasound images. We first propose a method to extract a liver capsule on an ultrasound image, then, based on the extracted liver capsule, we fine-tune a deep convolutional neural network (CNN) model to extract features from the image patches cropped around the(More)