Results 141 to 150 of about 1,684 (181)

Intersecting features extraction from 2D orthographic projections

Computer-Aided Design, 1998
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Ganesan, Rajan, Devarajan, Venkat
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Motion and structure from orthographic projections

[1988 Proceedings] 9th International Conference on Pattern Recognition, 1989
The authors review S. Ullman's (1979) results on deriving motion and structure from orthographic views. They present two further results: they show that two orthographic views allow an unresolvably infinite number of solutions for the motion/structure of a rigid body; and they give a linear algorithm for solving for motion/structure from four-point ...
T.S. Huang, C.H. Lee
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Motion estimation under orthographic projection

IEEE Transactions on Robotics and Automation, 1991
Some new results for the problem of motion estimation under orthographic projection are presented. Some basic results obtained by previous researchers are refined and more detailed and precise results are provided. It is shown that, in the two-view problem, when the rotation is around the optical axis, the motion (but not the structure) is uniquely ...
X. Hu, N. Ahuja
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Temporal phase unwrapping using orthographic projection

Optics and Lasers in Engineering, 2017
This paper proposes a novel temporal phase unwrapping method which is a generalization of the three commonly proposed approaches: hierarchical, heterodyne, and number theoretical phase unwrapping. The proposed unwrapping method is based on the orthographic projection of wrapped phases from the measurement space to the space of co-dimension 1.
Pribanić, Tomislav, Petković, Tomislav, Galić, Matea   +2 more
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Demonstrating Orthographic Projection

Technical Education and Industrial Training, 1960
Teachers of technical drawing often find difficulty in conveying the positioning, meaning and understanding of orthographic projection. This is not surprising since a solid object has to be portrayed in a certain accepted manner on a plane surface. The use of the terms ‘1st and 3rd angle’ or ‘British and American’ confuses matters, while auxiliary ...
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Geometry and the Orthographic Projection

Journal of Architectural Education, 2016
It has been nearly 15 years since the publication of Scott Cohen's groundbreaking text, Contested Symmetries and other Predicaments in Architecture.
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Reconstruction of 3D Objects from Orthographic Projections

Computer Graphics Forum, 1986
AbstractAn algorithm for automatic reconstruction of 3D objects from their orthographic projections is presented in this paper. It makes some improvements to, and complements the, Wesley‐Markowsky algorithm, which is a typical hierarchical reconstruction algorithm limited to polyhedral objects, and extracts the idea of pattern recognition expressed in ...
Kaining Gu, Zesheng Tang, Jiaguang Sun
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A BACKGROUND TO ORTHOGRAPHIC PROJECTION

Technical Education and Industrial Training, 1960
Engineering drawing students often ask questions on the origins of their subject which even today are impossible to answer. In this article Mr Howarth gives much of the background of orthographic projection, but poses several questions, the answers to which would help complete the story.
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Orthographic projection images-based photon-counted integral Fourier holography

Applied Optics, 2019
Unlike coherent imaging techniques, light field imaging uses incoherent (white light) illumination to generate a digital hologram of three-dimensional (3D) objects in real time. Multiple projections (or elemental images) of a 3D object are captured using a microlens array attached to a digital camera.
Min Wan, Inbarasan Muniraj, Ra’ed Malallah, Ni Chen, John J. Healy, James P. Ryle, John T. Sheridan   +6 more
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The Observer and the Orthographic Projection

1987
We now address the problem of representing views of three-dimensional scenes on the graphics viewport. There are three major stages. In chapter 7 we saw how to construct a model of a three-dimensional scene in ACTUAL position. In this chapter we consider observing the scene and the display of a corresponding view.
Ian O. Angell, Gareth Griffith
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