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Complex Dual-Tree Pyramid Scattering Transformer
IEEE Transactions on Neural Networks and Learning SystemsAttention-based transformer networks have recently played an increasingly important role in computer vision tasks. However, since pixel-by-pixel attention multiplication does not involve constraint assumptions such as spatial invariance, the computational complexity grows quadratically with the increase of input pixels. Therefore, this article proposes
Xiaotong Li +2 more
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Complex documents images segmentation based on steerable pyramid features
International Journal on Document Analysis and Recognition, 2010Page segmentation and classification is very important in document layout analysis system before it is presented to an OCR system or for any other subsequent processing steps. In this paper, we propose an accurate and suitably designed system for complex documents segmentation. This system is based on steerable pyramid transform. The features extracted
Slim Kanoun +2 more
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Recognition of complex human activities by using sequential pyramid matching
2012 20th Signal Processing and Communications Applications Conference (SIU), 2012Human action recognition is a topic of increasing interest in recent years. Most of the work is focused on actions that have simple, periodic structure such as walking, running and hugging, but our everyday life contains very different types of actions with challenging problems. Space-time interest points and the bag of words approach have been shown a
Aytac Cavent, Nazli Ikizler-Cinbis
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Science, 2002
How are the myriad components inside the cell connected together, enabling the cell to carry out its specific functions? In their Perspective, [Oltvai and BarabAisi][1] discuss two new studies ([Lee][2] et al ., [Milo][3] et al .) that investigate both biological networks of intracellular components and nonbiological networks such as the World Wide Web.
Zoltán N. Oltvai +1 more
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How are the myriad components inside the cell connected together, enabling the cell to carry out its specific functions? In their Perspective, [Oltvai and BarabAisi][1] discuss two new studies ([Lee][2] et al ., [Milo][3] et al .) that investigate both biological networks of intracellular components and nonbiological networks such as the World Wide Web.
Zoltán N. Oltvai +1 more
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A low complexity overcomplete directional image pyramid
Proceedings 2003 International Conference on Image Processing (Cat. No.03CH37429), 2004An undecimated directional filter bank (UDFB) derived from the DFB originally proposed by Bamberger and Smith is proposed. The new UDFB has excellent orientation selectivity, and maintains the low computational complexity from its predecessor. While over complete, the UDFB presents other properties like shift invariance, desirable for some image ...
José-Gerardo Rosiles, Mark J. T. Smith
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Pyramids in the complex projective plane
Geometriae Dedicata, 1991For a metric space \(M\) and a natural number \(n\) the function \(\delta: M^ n\to\mathbb{R}\), \(\delta(x_ 1,\dots,x_ n)=\max_{ij}\hbox{dist}_ M(x_ i,x_ j)\) is called the diameter functional. In a previous paper the author constructed a suitable right inscribed pyramid on a \((2k+1)\)- gon whose set of vertices \(P_ k\) is a local minimum of \(\delta\
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Panoramic image mosaics via complex wavelet pyramid
SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.98CH36218), 2002Image mosaics is one of the scene encoding approaches and is a very active research area in computer vision community and computer graphics community. This paper presents a robust panoramic image mosaicing scheme which employs complex wavelet pyramid and the human visual perceptive thresholding techniques.
Paul Bao, Dan Xu 0001
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Analysis of complex bursting in cortical pyramidal neuron models
Neurocomputing, 2000Abstract Burst firing is a prominent feature of cortical pyramidal cells and is thought to have significant functional roles in reliable signaling and synaptic plasticity. Modeling studies have successfully elucidated possible biophysical mechanisms underlying complex bursting in pyramidal cells. Based on these results (Pinsky, Rinzel, J.
Ádám Kepecs, Xiaojing Wang
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Self-Assembly of Pyramidal Tetrapalladium Complexes with a Halide at the Apex
Angewandte Chemie International Edition, 2001Halide ions act as the template for the self-assembly of tetrapalladium macrocyclic pyramidal structures. These undergo easy inversion in which the halide ion apparently jumps across the macrocycle.
Camino, Bartolomé +4 more
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Network Complexity Pyramid with five levels
International Journal of Systems, Control and Communications, 2009A network complexity pyramid with five levels is suggest and summarised. From the top level-5 to the bottom level-1 complexity and diversity are increasing but universality and simplicity are decreasing. They can be described in an unification form by four hybrid ratios.
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