نتایج جستجو برای: minirhizotron images

تعداد نتایج: 262135  

2015
Javier Civera

. Paraphrasing Olivier Faugeras in the foreword of [1], making a robot see is still an unsolved and challenging task after several decades of research. The traditional research has been based on the geometric models of multiple views of a scene, estimating a sparse 3D map of the scene and the camera pose. Recent advances have led to fully dense and real-time 3D reconstructions. Also, there are ...

2006
Jonathan E. Nichols Robert K. Booth Stephen T. Jackson Elise G. Pendall Yongsong Huang

Proxies such as plant macrofossils, humification indices and testate amoebae have been developed to reconstruct past hydrological variability in ombrotrophic peatlands. Reconstructions based on these approaches have resulted in records of decadalto centennial-scale moisture variability in regions of North America and elsewhere. Although the various peatland moisture proxies generally show signi...

Journal: :CoRR 2017
Kyle Genova Manolis Savva Angel X. Chang Thomas A. Funkhouser

The use of rendered images, whether from completely synthetic datasets or from 3D reconstructions, is increasingly prevalent in vision tasks. However, little attention has been given to how the selection of viewpoints affects the performance of rendered training sets. In this paper, we propose a data-driven approach to view set selection. Given a set of example images, we extract statistics des...

2012
Osian Haines Andrew Calway

We propose an algorithm to detect planes in a single image of an outdoor urban scene, capable of identifying multiple distinct planes, and estimating their orientation. Planar surfaces are ubiquitous in man-made environments, and convey useful information about scene structure; detecting them from a single image can be very useful since it requires no parallax, and can be done when only one ima...

2017
Anh Tuan Tran Tal Hassner Iacopo Masi Eran Paz Yuval Nirkin Gerard Medioni

Existing single view, 3D face reconstruction methods can produce beautifully detailed 3D results, but typically only for near frontal, unobstructed viewpoints. We describe a system designed to provide detailed 3D reconstructions of faces viewed under extreme conditions, out of plane rotations, and occlusions. Motivated by the concept of bump mapping, we propose a layered approach which decouple...

2009
M. Zöllner J. Keil H. Wüst D. Pletinckx

Museums often lack the possibility to present archaeological or cultural heritage sites in a realistic and interesting way. Thus are proposing a new way to show augmented reality applications of cultural heritage sites at remote places like museums. In the exhibition space large wall-filling photographs of the real site are superimposed with interactive contextual annotations like 3D reconstruc...

Journal: :IJPRAI 2015
Roanna Lun Wenbing Zhao

Microsoft Kinect, a low-cost motion sensing device, enables users to interact with computers or game consoles naturally through gestures and spoken commands without any other peripheral equipment. As such, it has commanded intense interests in research and development on the Kinect technology. In this article, we present a comprehensive survey on Kinect applications, and the latest research and...

Journal: :iranian journal of medical physics 0
mojtaba salouti asistant professor, biology dept., faculty of sciences, islamic azad university, zanjan branch, zanjan, iran hossein rajabi associate professor, medical physics dept., faculty of medical sciences, tarbiat modarres university, tehran, iran mohammad hossein babaei associate professor, radioisotope of dept., nuclear research center, atomic energy organization of iran, tehran, iran

introduction: biodistribution study in animal models bearing tumors is one of the most important procedures in evaluation of fractional uptake of radiopharmaceuticals in the tumor and non-tumor organs. the aim of this study was to develop a new software-based method to determine activities that accumulate in the main organs as well as the tumor based on scintigraphy images, thereby obviating th...

Journal: :Tree physiology 2011
Jakub Olesinski Michael B Lavigne Marek J Krasowski

We tested the hypothesis that moisture stress affects fine root dynamics during and after the stress. To this end, we investigated the effects of soil moisture on annual and seasonal fine root production and mortality over 4 years in a mature balsam fir (Abies balsamea L. Mill.) stand using a minirhizotron and soil coring. Droughting and irrigating treatments were imposed for 17 weeks during th...

Journal: :The New phytologist 2005
L H Comas L J Anderson R M Dunst A N Lakso D M Eissenstat

Below-ground carbon allocation represents a substantial fraction of net photosynthesis in plants, yet timing of below-ground allocation and endogenous and exogenous factors controlling it are poorly understood. Minirhizotron techniques were used to examine root populations of Vitis labruscana Bailey cv. Concord under two levels of dormant-season canopy removal and irrigation. Root production, p...

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