Comparison of time-lens configurations under different repetition rate

In proceedings: 18th OptoElectronics and Communications Conference held Jointly with 2013 International Conference on Photonics in Switching (OECC/PS)Poster Session: TuPS-7We review the theoretical models and the performance of two existing time-lens configurations, and compare them under different repetition rate in different aspects: the focal group delay dispersion (GDD), and the temporal numerical aperture (NA). © 2013 IEICE.published_or_final_versio

Microscopy refocusing and dark-field imaging by using a simple LED array

The condenser is one of the main components in most transmitted light compound microscopes. In this Letter, we show that such a condenser can be replaced by a programmable LED array to achieve greater imaging flexibility and functionality. Without mechanically scanning the sample or changing the microscope setup, the proposed approach can be used for dark-field imaging, bright-field imaging, microscopy sectioning, and digital refocusing. Images of a starfish embryo were acquired by using such an approach for demonstration

RGB-D datasets using microsoft kinect or similar sensors: a survey

RGB-D data has turned out to be a very useful representation of an indoor scene for solving fundamental computer vision problems. It takes the advantages of the color image that provides appearance information of an object and also the depth image that is immune to the variations in color, illumination, rotation angle and scale. With the invention of the low-cost Microsoft Kinect sensor, which was initially used for gaming and later became a popular device for computer vision, high quality RGB-D data can be acquired easily. In recent years, more and more RGB-D image/video datasets dedicated to various applications have become available, which are of great importance to benchmark the state-of-the-art. In this paper, we systematically survey popular RGB-D datasets for different applications including object recognition, scene classification, hand gesture recognition, 3D-simultaneous localization and mapping, and pose estimation. We provide the insights into the characteristics of each important dataset, and compare the popularity and the difficulty of those datasets. Overall, the main goal of this survey is to give a comprehensive description about the available RGB-D datasets and thus to guide researchers in the selection of suitable datasets for evaluating their algorithms

A presentation and critical analysis of national health programs and proposals with emphasis on national mental health programs and proposals in the United States

Thesis (M.S.)--Boston University, 1947. This item was digitized by the Internet Archive

Resultaten verkenning ondersteuning professionals gezondheidsbevordering : Bijlage bij Plan van aanpak Professionals Gezond Versterkt 2010-2012

VW

Generation of very flat optical frequency combs from continuous-wave lasers using cascaded intensity and phase modulators driven by tailored radio frequency waveforms

We demonstrate a scheme, based on a cascade of lithium niobate intensity and phase modulators driven by specially tailored radio frequency waveforms to generate an optical frequency comb with very high spectral flatness. In this work we demonstrate a 10 GHz comb with ~40 lines with spectral power variation below 1-dB and ~60 lines in total. The number of lines that can be generated is limited by the power handling capability of the phase modulator, and this can be scaled without compromising the spectral flatness. Furthermore, the spectral phase of the generated combs in our scheme is almost purely quadratic which, as we will demonstrate, allows for very high quality pulse compression using only single mode fiber.Comment: 12 pages, 3 figures, replaced the older version with the published versio