This paper proposes a novel face detection algorithm which extracts a local image structure (LIS) feature and adopts a boosting approach to construct a cascaded face detector. Due to the locality of LIS, the extracted feature is not only robust to lighting variation but also is invariant to small degrees of rotation. With this robust property a multiple-template cascaded detection algorithm has...

We propose a two stage detector consisting of a Subspace Detector (SD) followed by the Whitened Adaptive Beamformer Orthogonal Rejection Test (W-ABORT). The performance analysis shows that it possesses the Constant False Alarm Rate property with respect to the unknown covariance matrix of the noise and that it guarantees a wider range of directivity values with respect to previously proposed tw...

Unique continuation results are proved for metrics with prescribed Ricci curvature in the setting of bounded metrics on compact manifolds with boundary, and in the setting of complete conformally compact metrics on such manifolds. Related to this issue, an isometry extension property is proved: continuous groups of isometries at conformal infinity extend into the bulk of any complete conformall...

The need for radiation hard semiconductor detectors for the tracker regions in high energy physics experiments at a future high luminosity hadron collider, like the proposed LHC upgrade, has led to the formation of the CERN RD50 collaboration. The R&D directions of RD50 follow two paths: the optimization of radiation hard bulk materials (Material Engineering) and the development of new detector...

Polymers bearing dynamic covalent bonds may exhibit dynamic properties, such as self-healing, shape memory and environmental adaptation. However, most dynamic covalent chemistries developed so far require either catalyst or change of environmental conditions to facilitate bond reversion and dynamic property change in bulk materials. Here we report the rational design of hindered urea bonds (ure...

Properties of the domain wall (kink) solution in the 5 dimensional RandallSundrum model are examined both analytically and numerically. The configuration is derived by the bulk Higgs mechanism. We focus on 1) the convergence property of the solution, 2) the stableness of the solution, 3) the non-singular property of the Riemann curvature, 4) the behaviours of the warp factor and the Higgs field...

Failure detection is a fundamental issue for supporting reliability in wired and wireless fault-tolerant distributed networks, and is also an important performance bottleneck in providing generic service (similar to IP address lookup) in the event of node failure. It is very necessary to design an acceptable and optimized failure detector (FD) before the FD is actually implemented. Ensuring acc...

This paper describes the detection of single photons, which have been transmitted through standard fiber at the telecom wavelength of 1310 nm. Following transmission, the 1310-nm photon is up-converted to 710 nm in a periodical-poled LiNbO3 (PPLN) waveguide and then detected by a silicon-based avalanche photodiode (Si-APD). The overall detection efficiency of the detector is 20%. We have also c...

Due to the wide variety of attacks and the difficulties of developing an accurate statistical model of host features, the structure of the watermark detector is derived by considering a simplified channel model. In this paper, we present a fragile watermarking based on blockmapping mechanism which can perfectly recover the host image from its tampered version by generating a reference data. By ...