Results 211 to 220 of about 7,201 (251)
Nongenetic Photostimulation of hiPSC Neurons Using Plasmonic Nanopyramids. [PDF]
ACS PhotonicsMelikov R +8 more
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Geometry-constrained spatial pyramid adaptation for image classification
2014 IEEE International Conference on Image Processing (ICIP), 2014This paper proposes a geometry-constrained spatial pyramid adaptation approach for the image classification task. Scene geometry is used as an input parameter for generating the spatial pyramid definitions. The resulting region adaptation is performed in accordance with the predefined geometric guidelines and underlying image characteristics.
Ronan Sicre +2 more
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Generalized Deformable Spatial Pyramid: Geometry-preserving dense correspondence estimation
2015 IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2015We present a Generalized Deformable Spatial Pyramid (GDSP) matching algorithm for calculating the dense correspondence between a pair of images with large appearance variations. The main challenges of the problem generally originate in appearance dissimilarities and geometric variations between images.
Sang Chul Ahn
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The Geometry of Zoser's Step Pyramid at Saqqara
Journal of the Society of Architectural Historians, 1986The Step Pyramid of Zoser at Saqqara is examined from the point of view of constructive geometry and mensuration. The evidence is that it is based on geometric proportion, though this may simply be the outcome of peg-and-chord technology employed in setting out the monument. The procedure that the architect may have followed in setting out the monument
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Pyramidal Sections in Taxicab Geometry
Mathematics Magazine, 1982The formula for the Eucidean distance between two points in the plane leads, early in the study of analytic geometry, to the definitions of the classical conic sections-the circle, ellipse, and hyperbola-in terms of distances to fixed points. Additionally, the parabola can be defined in terms of distances to a fixed point and a fixed line. After modest
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Optimized geometry pyramidal absorber for normal incidence case
2013 6th International Conference on Recent Advances in Space Technologies (RAST), 2013To improve accuracy of the EMC measurements in anechoic chambers, a new absorber shape is presented in this study that results in a lower reflection coefficient than the commonly used pyramidal shape for the normal incidence case of the plane electromagnetic wave.
Sedef Kent, Ibrahim Catalkaya
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The Journal of Chemical Physics, 2020
The pyramidalization angle and spherical curvature are well-known quantities used to characterize the local geometry of a molecule and to provide a measure of regio-chemical activity of molecules. In this paper, we give a self-contained presentation of these two concepts and discuss their limitations.
Julia Sabalot-Cuzzubbo +3 more
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The pyramidalization angle and spherical curvature are well-known quantities used to characterize the local geometry of a molecule and to provide a measure of regio-chemical activity of molecules. In this paper, we give a self-contained presentation of these two concepts and discuss their limitations.
Julia Sabalot-Cuzzubbo +3 more
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Construct Effective Geometry Aware Feature Pyramid Network for Multi-Scale Object Detection
Proceedings of the AAAI Conference on Artificial Intelligence, 2022Feature Pyramid Network (FPN) has been widely adopted to exploit multi-scale features for scale variation in object detection. However, intrinsic defects in most of the current methods with FPN make it difficult to adapt to the feature of different geometric objects.
Jinpeng Dong +4 more
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Pixel-pyramid model for divergent projection geometry
Optical Engineering, 2005Divergent projection refers to fan-beam or cone-beam projection originating from a point source, which is commonly seen in x-ray imaging. Conventionally, the divergent projection calculation is carried out using a ray model, in which each detector pixel (cell) receives radiations emanating from a point source, in a form of straight-line ray. The finite
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