Results 31 to 40 of about 1,684 (181)

Precision phenotyping in wheat: LiDAR-based plant height estimation and lodging classification using uncrewed ground vehicles

Canadian Journal of Remote Sensing
Accurate phenotyping of wheat traits is essential for advancing breeding programs and crop science research. This study employs the University of Saskatchewan Field Phenotyping Systems (UFPS), an uncrewed ground vehicle (UGV), across six Canadian ...
Prabahar Ravichandran, Keshav D. Singh, Scott D. Noble, Raju Soolanayakanahally, Jatinder S. Sangha, Elizabeth K. Brauer, Oscar Molina, Kirby T. Nilsen, Harpinder S. Randhawa, Keith Halcro, Clare Workman, Shankar Pahari   +11 more
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Systematization of the order of the methods of graphic representation. The perspective as matrix of methods

Disegnare con, 2012
As regards the order of the methods of exhibition graphic representation is intended to propose a sequence reverse to that of traditional exposures but at the same time in harmony with both the chronological order, historical, in which the methods ...
Marco Fasolo
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Modeling Practical Multi-Center-of-Projection Using Ellipsoid

IEEE Access
Traditional 3D projection models, such as perspective and orthographic projection, are limited to two types of projective ray fields: rays passing through a single point and parallel rays.
Soohyun Lee, Junyoung Yoon, Joo Ho Lee
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LiDAR Odometry by Deep Learning-Based Feature Points with Two-Step Pose Estimation

Remote Sensing, 2022
An accurate ego-motion estimation solution is vital for autonomous vehicles. LiDAR is widely adopted in self-driving systems to obtain depth information directly and eliminate the influence of changing illumination in the environment.
Tianyi Liu, Yan Wang, Xiaoji Niu, Le Chang, Tisheng Zhang, Jingnan Liu   +5 more
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Development of a Low-Cost 6 DOF Brick Tracking System for Use in Advanced Gas-Cooled Reactor Model Tests

Sensors, 2022
This paper presents the design of a low-cost, compact instrumentation system to enable six degree of freedom motion tracking of acetal bricks within an experimental model of a cracked Advanced Gas-Cooled Reactor (AGR) core.
Paolo Olson, Adam J. Crewe, Tansu Gokce, Tony Horseman, Rory E. White   +4 more
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COMPUTATIONAL VISION IN UV-MAPPING OF TEXTURED MESHES COMING FROM PHOTOGRAMMETRIC RECOVERY: UNWRAPPING FRESCOED VAULTS [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016
Sometimes it is difficult to represent “on paper" the existing reality of architectonic elements, depending on the complexity of his geometry, but not only in cases with complex geometries: non-relief surfaces, can need a “special planar format” for its
P. G. Robleda, G. Caroti, I. Martínez-Espejo Zaragoza, A. Piemonte   +3 more
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Power Pylon Reconstruction from Airborne LiDAR Data Based on Component Segmentation and Model Matching

Remote Sensing, 2022
In recent years, with the rapid growth of State Grid digitization, it has become necessary to perform three-dimensional (3D) reconstruction of power elements with high efficiency and precision to achieve full coverage when simulating important ...
Yiya Qiao, Xiaohuan Xi, Sheng Nie, Pu Wang, Hao Guo, Cheng Wang   +5 more
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A Unified Shape-From-Shading Approach for 3D Surface Reconstruction Using Fast Eikonal Solvers

International Journal of Optics, 2020
Object shape reconstruction from images has been an active topic in computer vision. Shape-from-shading (SFS) is an important approach for inferring 3D surface from a single shading image.
Guohui Wang, Xuan Zhang, Jin Cheng
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Shape from depth discontinuities under orthographic projection [PDF]

2009 IEEE 12th International Conference on Computer Vision Workshops, ICCV Workshops, 2009
We present a new method for reconstructing the 3-D surface of an opaque object from the motion of its depth discontinuities, when viewed under orthographic projection as the object undergoes rigid rotation on a turntable. A novel shape completion scheme is introduced to fill in gaps in the recovered surface, which would otherwise be impossible to ...
Douglas Lanman, Daniel Cabrini Hauagge, Gabriel Taubin   +2 more
openaire   +1 more source

3D Graphics with Spreadsheets

Spreadsheets in Education, 2009
In the article, the formulas for orthographic parallel projection of 3D bodies on computer screen are derived using secondary school vector algebra. The spreadsheet implementation is demonstrated in six applications that project bodies with increasing ...
Jan Benacka
doaj