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Aiming at further increasing the data-storage density beyond 1Tb/in2[1–3], bit-patterned media recording (BPMR), shingled writing (SW)/two-dimensional magnetic recording (TDMR) have emerged as new promising technologies.
We propose Nucleus, a novel function detection algorithm for binaries. In contrast to prior work, Nucleus is compiler-agnostic, and does not require any learning phase or signature information. Instead of scanning for signatures, Nucleus detects functions at the Control Flow Graph-level, making it inherently suitable for difficult cases such as non-contiguous or multi-entry functions. We evaluate...
The ultra-wide band (UWB) technology can be used for low cost and low power applications such as body area networks, IoT based applications, wireless sensor networks and high data rate short range wireless communications. In the UWB literature, non-coherent energy detector (ED) receiver is proposed to reduce receiver implementation complexity by avoiding the complex channel estimation process and...
A generalized sequential probability ratio test (GSPRT) is a classical algorithm for binary sequential hypothesis testing. Though it is well-studied in the literature, there has been no optimal design of this test due to the difficulty of choosing its thresholds. In this paper we formulate the binary sequential hypothesis testing as an optimization problem. The latter is non-convex, and finding a...
Tracking many vehicles in wide coverage aerial imagery is crucial for understanding events in a large field of view. Most approaches aim to associate detections from frame differencing into tracks. However, slow or stopped vehicles result in long-term missing detections and further cause tracking discontinuities. Relying merely on appearance clue to recover missing detections is difficult as targets...
This paper is about the collaborative use of a far-infrared spectrum human detector and a visible spectrum human detector; the idea is to make collaborate these two detectors of different nature to automatically adapt the human detection whatever the luminosity changes and whatever the infrared emission changes of the scene. Our collaborative approach of detection handles: 1) gradual luminosity changes...
A stopping time τ is controlled by a process {Xt} and we are interested in the detection of its onset using a sequential scheme. The sequential detector is an alternative stopping time T which is based on observations {ξt} that are obtained sequentially. The occurrence of τ initiates a change in the statistical behavior of the pair processes {(Xt, ξt} for times after τ with τ modeling the change-imposing...
Autonomous UAV must rely on the navigation system to fly in the indoor environment. However, the traditional navigation system such as GPS cannot be used in the indoor environment. A method of Simultaneous Location and Mapping (SLAM) based on RGB-D cameras is used to solve this matter. We adopt the RGB-D SLAM algorithm to locate the camera and build the 3D map of the environment in this paper. The...
Congestion on freeways restrains its ability to provide smooth traffic flow. Normally congestion occurs when traffic volumes are considerably greater than the link capacity especially in the peak hours or in case of incidents that disturb the traffic flow, which either are denoted as recurrent and nonrecurrent congestion respectively. As a consequence, the freeway network performance is adversely...
Source code analysis to detect code cloning, code plagiarism, and code reuse suffers from the problem of pervasive code modifications, i.e. transformations that may have a global effect. We compare 30 similarity detection techniques and tools against pervasive code modifications. We evaluate the tools using two experimental scenarios for Java source code. These are (1) pervasive modifications created...
Compact ring diameter PET systems suffer degradation in spatial resolution with increasing radial offset due to the parallax error caused by depth of interaction (DOI) effects. In this work, we study the problem of optimizing layer thicknesses for a detector that uses a dual-layer offset (DLO) scintillator array. In this design, a half-crystal offset exists between the crystals in the front and back...
Gamma-ray imaging allows for efficient detection, characterization, and localization of compact radioactive sources in cluttered environments. Fieldable detector systems employing active planar coded masks demonstrate broad energy sensitivity via both coded aperture and Compton imaging modalities. Because planar configurations suffer from a limited field-of-view, we introduce a novel design by rearranging...
FASPAX (Fermi-Argonne Semiconductor Pixel Array X-ray detector) has been planned as a fast integrating area detector with wide dynamic range for time resolved applications at the upgraded Advanced Photon Source (APS). The detector will achieve a burst image rate of 13 MHz, matching the bunch rate of the proposed storage ring timing mode. A unique three gain charge splitting integration circuit will...
In practical CBCT imaging such as that in interventional procedures, data collected are truncated due to the limited detector size that cannot cover the imaged subject and especially the involved interventional devices. We study optimization-based image reconstruction directly from truncated data, with an aim to reduce truncation artifacts observed in practical or clinical reconstructions. In the...
Neutron imaging is widely used in scientific experiments and industrial applications. The neutron sensitive microchannel plate (nMCP) detector plays the role of registering penetrating neutrons and realizing high spatial resolution. The delay-line readout anode can achieve a high spatial resolution with an acceptable throughput. To optimize working parameters of the nMCP detector with the delay-line...
Cross-correlation metrics introduce a challenging performance for multiple antennas spectrum sensing in cognitive radio networks, since it permits to alleviate the drawback of the energy based approaches under low SNR and noise level uncertainty, while maintaining the low complexity. In this paper, we propose a novel sensing approach based on a linear soft weighting of the Combined Second Order Moment...
In the current day and age, traffic in urban areas is becoming more and more complex leading to congested roads and intersections. Hence, the need for sophisticated traffic control system to reduce the congestion and provide better flow management. In this paper, we present briefly the basic notions and the most important parameters that affects the traffic control. Then, we provide a survey on the...
The aim of the paper is to provide an optimal placement of sensors for inhabitant location tracking in smart homes, by using only motion detectors. In particular, motion detectors are binary sensors largely used in ambient assisted living applications because they are low cost, non-intrusive and privacy sensors. An approach to optimize the placement of motion detectors in a real home environment by...
This paper describes an optimization-based planning tool to assist planners in developing strategies for searching an urban area with gamma-ray detectors for the presence of a radiation source. Current search strategies (path and speed) are based on simple rules (e.g., move at normal traffic speed) and constrained by road networks and resources such as detection equipment, personnel, vehicles or time...
Tone mapping operators (TMO) have recently raised interest for their capability to handle illumination changes. However, these TMOs are optimized with respect to perception rather than image analysis tasks like key point detection. Moreover, no work has been done to analyze the factors affecting the optimization of TMOs for such tasks. In this paper, we investigate the influence of two factors-Correlation...
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