We propose a method for extracting fiducial points from human faces that uses 3D information only and is based on two key steps: multi-scale curvature analysis, and the reliable tracking of features in a scale-space based on curvature. Our scale-space analysis, coupled to careful use of prior information based on variability boundaries of anthropometric facial proportions, does not require a tr...

In the United States, lung cancer is the leading cause of cancer-related death. Candidates for tumor ablation using CyberKnife® require fiducial placement in or near the target tumor to achieve precision. Placing these reference points may lead to complications including pneumothorax and/or hemorrhage. We report a new complication: the appearance of metastatic foci along the track of the fiduci...

We show how to convert between partially coherent superpositions of a single photon with the vacuum by using linear optics and postselection based on homodyne measurements. We introduce a generalized quantum efficiency for such states and show that any conversion that decreases this quantity is possible. We also prove that our scheme is optimal by showing that no linear optical scheme with gene...

treated tumor (center). The peak pyruvate signal has been scale to 1 and the origin of time (t=0) has been chosen to coincide with the peak of the pyruvate signal. The panel at right shows an axial proton image of the tumor (indicated by the green ellipse) and the location of the surface coil (indicated by the red line). The diagonal line at upper left is a water-filled fiducial marker. Monitor...

We propose a two-stage classifier for the elastic bunch graph matching based recognition of facial expressions. The major purpose is to calculate distinctive similarity between image patterns by applying optimal weights to responses from different Gabor kernels and those from different fiducial points. In the first stage, we perform SVM on each fiducial point individually to extract a weighted ...

abstract background and aim: the intolerance of uncertainty model was initially developed as an explanation for worry within the context of generalized anxiety disorder. however, recent research has identified intolerance of uncertainty (iu) as a transdiagnostic maintaining factor across the anxiety disorders. the aim of the present study was to compare the intolerance of uncertainty in patient...