نتایج جستجو برای: space photography

تعداد نتایج: 510356  

2013
Andreas Velten Di Wu Adrian Jarabo Belen Masia Christopher Barsi Chinmaya Joshi Everett Lawson Moungi Bawendi Diego Gutierrez Ramesh Raskar

We present femto-photography, a novel imaging technique to capture and visualize the propagation of light. With an effective exposure time of 1.85 picoseconds (ps) per frame, we reconstruct movies of ultrafast events at an equivalent resolution of about one half trillion frames per second. Because cameras with this shutter speed do not exist, we re-purpose modern imaging hardware to record an e...

2006
Albert K. Chong

The paper describes an application of close-range photogrammetry in the study of the human hand for propulsion in competitive swimming. The study involved the capture of 3-D surface data and modelling of a real and a replica hand. Both real and replica models were used in computer simulation to determine the propulsion parameters for high performance swimming. Custom-made control frame was used...

1998
Helmut Mayer Ivan Laptev Albert Baumgartner

This paper proposes an approach for automatic road extraction in aerial imagery which exploits the scale-space behavior of roads in combination with geometric constrained snake-based edge extraction. The approach not only has few parameters to be adjusted, but for the first time allows for a bridging of shadows and partially occluded areas using the heavily disturbed evidence in the image. The ...

2000
Jack M. Holm Ingeborg Tastl Steven D. Hordley

A fundamental problem in digital photography is the estimation of scene colorimetry from raw DSC image data. Currently, a standard is under development in this area (ISO 17321-2). In the development of this standard, few subjective experiments have been carried out until now relating to the estimation of scene colorimetry from noncolorimetric raw data, where no assumptions are made concerning t...

2006
Stephen Johnson

stephen johnson on digital photography stephen johnson on digital photography digital photography workshops with stephen johnson introduction to digital imaging image capture/input digital photography field guide pad eye design guide pdf ebook | browserfame introduction to digital imaging digital cameras the digital photography book: the step-by-step secrets for contents part 3: input, light to...

2008
Ramesh Raskar

Computational photography combines plentiful computing, digital sensors, modern optics, actuators, and smart lights to escape the limitations of traditional cameras, enables novel imaging applications and simplifies many computer vision tasks. However, a majority of current Computational photography methods involves taking multiple sequential photos by changing scene parameters and fusing the p...

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