Results 11 to 20 of about 60,763 (262)

Centered pyramids [PDF]

open access: yesIEEE Transactions on Image Processing, 1999
Quadtree-like pyramids have the advantage of re-suiting in a multiresolution representation where each pyramid node has four unambiguous parents. Such a centered topology guarantees a clearly defined up-projection of labels. This concept has been successfully and extensively used in applications of contour detection, object recognition and segmentation.
Brigger, P.   +3 more
openaire   +2 more sources

Analyzing periodical textured silicon solar cells by the TCAD modeling [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2021
The most effective way to improve the optical properties of silicon-based solar cells is to form the textures on their surface. In this paper, the authors studied the influence of geometric sizes of periodical pyramidal textures, which are formed on the ...
Jasurbek Gulomov, Rayimjon Aliev
doaj   +1 more source

Pyramid Spatial-Temporal Graph Transformer for Skeleton-Based Action Recognition

open access: yesApplied Sciences, 2022
Although graph convolutional networks (GCNs) have shown their demonstrated ability in skeleton-based action recognition, both the spatial and the temporal connections rely too much on the predefined skeleton graph, which imposes a fixed prior knowledge ...
Shuo Chen   +3 more
doaj   +1 more source

DTCC: Multi-level dilated convolution with transformer for weakly-supervised crowd counting

open access: yesComputational Visual Media, 2023
Crowd counting provides an important foundation for public security and urban management. Due to the existence of small targets and large density variations in crowd images, crowd counting is a challenging task.
Zhuangzhuang Miao   +4 more
doaj   +1 more source

Poder religioso, crisis y prosperidad en Pachacamac: del Horizonte Medio al Intermedio Tardío

open access: yesBulletin de l'Institut Français d'Études Andines, 2004
Pachacamac has been defined as a great ceremonial center with much fame in Old Peru. Their origins go back Early to the Intermediate Period. In this article we present some results the presence of happened climatic changes mainly in the Average Horizon ...
Régulo Franco Jordán
doaj   +1 more source

Effect of apex and attack angles to horseshoe vortex formed around a pyramid obstacle

open access: yesNihon Kikai Gakkai ronbunshu, 2019
The effect of apex and attack angles to the flow around a pyramid obstacle was investigated with flow visualization and laser Doppler velocimetry. The flow visualization was performed by dye injection and electrolytic etching methods. The Reynolds number
Takatsugu KAMEDA, Shinsuke MOCHIZUKI
doaj   +1 more source

Drivers of adoption of reuse-on-the-go systems among low-income consumers in Kenya: insights from key expert entrepreneurs using the Theoretical Domains Framework and COM-B model

open access: yesFrontiers in Sustainability
IntroductionReusable systems can reduce plastic pollution from single-use packaging in fast-moving consumer goods in the Global South. While both “at-home” and “on-the-go” models exist, the latter requires greater consumer effort, as users must regularly
Luis Artavia-Mora   +6 more
doaj   +1 more source

Interactions Between Lr67 or Lr34 and Other Leaf Rust Resistance Genes in Wheat (Triticum aestivum)

open access: yesFrontiers in Plant Science, 2022
The wheat multi-pest resistance genes Lr67 and Lr34 are similar in that they both condition resistance to many diseases, in a non-race-specific manner, and code for cellular transporters.
Brent D. McCallum, Colin W. Hiebert
doaj   +1 more source

Framing pyramids [PDF]

open access: yesIEEE Transactions on Signal Processing, 2003
Burt and Adelson (1983) introduced the Laplacian pyramid (LP) as a multiresolution representation for images. We study the LP using the frame theory, and this reveals that the usual reconstruction is suboptimal. We show that the LP with orthogonal filters is a tight frame, and thus, the optimal linear reconstruction using the dual frame operator has a ...
Minh N. Do, Martin Vetterli
openaire   +2 more sources

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