Biomedical imaging has become ubiquitous in both, basic research and the clinical sciences. Technology advances, and the resulting multitude of imaging modalities, have led to a sharp rise in the quantity and quality of such images. Whether for epidemiological studies, educational uses, monitoring the clinical progress of a patient or translational science purposes, being able to integrate and ...

The linear intrinsic anomalous Hall effect (IAHE) and second-order IAHE have been intensively investigated in time-reversal broken systems. However, as one of the important members nonlinear family, investigation third-order remains absent due to lack an appropriate theoretical approach, although extrinsic AHE has studied within framework first- semiclassical theory. Herein, we generalize theor...

In this paper we present a new geometric formulation (Clifford algebra formalism) of the field equations, which is independent of the reference frame and of the chosen system of coordinates in it. This formulation deals with the complex 1-vector Ψ = E − icB (i is the unit imaginary), which is four-dimensional (4D) geometric generalization of Majorana’s complex 3D quantity Ψ = E − icB. When the ...

The registration problem is one of the major issues in Augmented Reality (AR). Fiducial tracking is gaining interest as a solution to this problem in video see-through AR because of the availability of digitized real scenes. There are several AR systems using fiducial tracking, but most of them operate in small desktop workspaces. It is difficult to apply them directly to large scale applicatio...

In this paper, we propose a real-time calibration technique for a projector-camera system, which enables the system to locate the projector even while it is moving. Usually fiducial points are stuck on the screen and the camera tracks both the fiducial points and the quadrilateral illuminated by the projector. Then the projector is located by the tracking. Instead of the fiducial points, our re...

In biometric recognition based on Electrocardiographic (ECG) signals, there are two main approaches for feature extraction: fiducial and non-fiducial. Fiducial methods use points of interest within single heartbeat waveforms, obtained by segmenting the ECG signal using QRS complexes as a reference. In this paper we study several QRS detection algorithms, with the purpose of determining what is ...

PURPOSE Real-time tracking of implanted fiducials in cine megavoltage (MV) imaging during volumetric modulated arc therapy (VMAT) delivery is complicated due to the inherent low contrast of MV images and potential blockage of dynamic leaves configurations. The purpose of this work is to develop a clinically practical autodetection algorithm for motion management during VMAT. METHODS The expec...

The objective of this study is to investigate the dose perturbations introduced by the implanted gold fiducial markers in the prostate cancer intensity modulated proton therapy (IMPT) and the impacts of different plan designs on the perturbations. Five proton plans: a single lateral field 3D-modulation (3D-mod) plan, 2 fields laterally opposing 3D-mod plan, 6-, 9-, and 18-field distal edge trac...

Characterizing and analyzing a system often requires learning an unknown function, such as the response of or profile field. The standard approach is to opportunely sample function at fiducial points then interpolate. When quantity interest embodied in physical objects accessible with quantum-enhanced measurements, it becomes relevant investigate how transfer this advantage from individual samp...

addresses the question: what is the best fiducial? A set of criteria that are desirable in an optically tracked fiducial are presented and a new fiducial image set is designed that meets these criteria. The images in this set utilize a square black-border pattern with a 15% border width and an interior image that supports orientation determination and unique identification. The interior image i...