نتایج جستجو برای: slant toep hank operator
تعداد نتایج: 96812 فیلتر نتایج به سال:
The Necker cube is a striking example for perceptual dominance of 3D over 2D. Object symmetry and obliqueness of angles are co-varying cues that may underlie the perceived slant of Necker cubes. To investigate the power of the oblique-angle cue, slants were judged of extremely simple symmetrical shapes. Slant computations based on an assumption of orthogonality were made for two abutting lines ...
In images of textured three-dimensional surfaces, pattern changes can be characterized as changes in orientation and spatial frequency, features for which neurons in primary visual cortex are classically selective. Previously, we have demonstrated that correct 3-D shape perception is contingent on the visibility of orientation flows that run parallel to the surface curvature. We sought to deter...
Subjects were examined for practice effects in a stereoscopic slant-estimation task involving surfaces that comprised a large portion of the visual field. In most subjects slant estimation was significantly affected by practice, but only when an isolated surface (an absolute disparity gradient) was present in the visual field. When a second, unslanted, surface was visible (providing a second di...
1 Mines ParisTech, Centre des matériaux, CNRS UMR 7633, BP87 91003 Evry Cedex, France [email protected] Flat to slant crack transition can typically be observed in ductile thin sheet materials. The crack initiates perpendicularly to the loading direction from the notch and then turns to 45° with respect to the loading direction during crack propagation. This phenomenon is, how...
When a surface covered with a regular texture is viewed in perspective, the projected texture provides a number of cues to 3D surface orientation. For oriented textures, one cue is perspective convergence: symmetry lines that are parallel along the surface project to lines that vary systematically in orientation. We investigated the contribution of perspective convergence to perception of 3D sl...
It is known that the perceived slants of large distal surfaces, such as hills, are exaggerated and that the exaggeration increases with distance. In a series of two experiments, we parametrically investigated the effect of viewing distance and slant on perceived slant using a high-fidelity virtual environment. An explicit numerical estimation method and an implicit aspect-ratio approach were se...
I was an indifferent high school student at the alternative Miquon School in Philadelphia, Pennsylvania—a bit lazy, suspicious of authority, with the wrong type of friends; but with an analytical and curious mind. Although I didn't know it at the time, these were good attributes Image 1. Hank Seifert.
Martin Jung, Markus Reichstein, Hank A. Margolis, Alessandro Cescatti, Andrew D. Richardson, M. Altaf Arain, Almut Arneth, Christian Bernhofer, Damien Bonal, Jiquan Chen, Damiano Gianelle, Nadine Gobron, Gerald Kiely, Werner Kutsch, Gitta Lasslop, Beverly E. Law, Anders Lindroth, Lutz Merbold, Leonardo Montagnani, Eddy J. Moors, Dario Papale, Matteo Sottocornola, Francesco Vaccari, and Christop...
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