Automatic assessing of morphological ordering of nanostructured surfaces was performed by employing several techniques of imageprocessing. We used a set of top-view images of pristine TiO2 nanotube, arrays prepared b...
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Photoacoustic tomography is a quickly growing imaging method that can provide images of high spatial resolution and high contrast at a limited depths. Medical photoacoustic processing characteristics two main componen...
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ISBN:
(纸本)9781538662175
Photoacoustic tomography is a quickly growing imaging method that can provide images of high spatial resolution and high contrast at a limited depths. Medical photoacoustic processing characteristics two main components: A transducer is required to transmit laser pulses and acquire the reflected ultrasound signals and a back-end processing system that will generate the final reconstructed image. In this paper, we introduce an implementation of the receive part of proposed embedded system and briefly discuss reconstruction algorithms which are used in medical imaging systems. Furthermore, an intellectual property core (IP-core), which can be controlled and configured by a user application on Zynq-7000 System-On-Chip (SoC) via AXI-Lite Interface, that can receive multichannel digitized raw signals from Analog-Front-End (AFE) device via Low Voltage Differential Signal (LVDS), is proposed for photoacoustic imaging systems. Besides, block diagram of the system, the hardware design flow and the proposed IP-core are fully described in this paper. In order to effortlessly test and evaluate a wide variety of ultrasonic signal processing applications, 16 channel system is implemented and demonstrated by using TI AFE5816 Evaluation module (EVM) based on AFE5816 device and Xilinx ZC702 Evaluation Kit based on Zynq-7000 SoC. Apart from working on hardware, we review and commented on the proposed 3-Dimensional photoacoustic image reconstruction algorithm.
Sea-land segmentation is one of the key technologies of sea target detection in remote sensing images. At present, the existing algorithms have the problems of low accuracy, low universality and poor automatic perform...
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ISBN:
(数字)9781510617261
ISBN:
(纸本)9781510617261;9781510617254
Sea-land segmentation is one of the key technologies of sea target detection in remote sensing images. At present, the existing algorithms have the problems of low accuracy, low universality and poor automatic performance. this paper puts forward a sea-land segmentation algorithm based on multi-feature fusion for a large-field remote sensing image removing island. Firstly, the coastline data is extracted and all of land area is labeled by using the geographic information in large-field remote sensing image. Secondly, three features (local entropy, local texture and local gradient mean) is extracted in the sea-land border area, and the three features combine a 3D feature vector. And then the Multi Gaussian model is adopted to describe 3D feature vectors of sea background in the edge of the coastline. Based on this multi-gaussian sea background model, the sea pixels and land pixels near coastline are classified more precise. Finally, the coarse segmentation result and the fine segmentation result are fused to obtain the accurate sea-land segmentation. Comparing and analyzing the experimental results by subjective vision, it shows that the proposed method has high segmentation accuracy, wide applicability and strong anti-disturbance ability.
Linear operators used in iterative methods like conjugate gradient have typically been implemented either as "matrix-driven" subroutines backed by explicit sparse or dense matrices, or as "matrix-free&q...
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ISBN:
(纸本)9781538643686
Linear operators used in iterative methods like conjugate gradient have typically been implemented either as "matrix-driven" subroutines backed by explicit sparse or dense matrices, or as "matrix-free" subroutines that implement specific linear operations directly (e.g. FFTs). the matrix-driven approach is generally more portable because it can target widely-available BLAS libraries, but it can be inefficient in terms of time and space complexity. In contrast, the matrix-free approach is more performant because it leverages structure in operations, but it requires each operator be re-implemented on each new platform. To increase performance and portability, we propose a hybrid approach that represents linear operators as expression trees. Leaf nodes in the tree are either matrix-free or matrix-driven operators, and interior nodes represent mathematical compositions (sums, products, transposes) or structural compositions (stacks, block diagonals, etc.) of the leaf operators. this representation enables expert-guided reordering and fusion transformations that can improve performance or reduce memory pressure. We implement our approach in a domain-specific language called Indigo. We assess Indigo on image reconstruction problems arising in four application areas: magnetic resonance imaging, ptychography, magnetic particle imaging, and fluorescent microscopy. We give performance results from vendor BLAS libraries, and we introduce specializations to Sparse BLAS routines that achieve near-Roofline performance on multi-core, many-core, and GPU systems.
We present a novel method for detecting text lines in historical handwritten and printed document images. Our hybrid technique begins by leveraging deep neural networks to perform multi-class pixel-wise prediction. th...
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ISBN:
(纸本)9781538658758
We present a novel method for detecting text lines in historical handwritten and printed document images. Our hybrid technique begins by leveraging deep neural networks to perform multi-class pixel-wise prediction. the predictor not only discovers text and graphics pixels in the document, but it is also designed to automatically adhere contiguous regions from the same text line while also predicting buffers that prevent disassociated text lines from merging. the system breaks neural "ties" through dynamic programming. To the best of our knowledge, our system is the first neural system to predict the entire perimeters of full text lines. Also, to aid in scaling and full-scope awareness, the network during training is initially given small regions of the image to study and then expands its scope to full images as training continues. Our goal for line segmentation is to enable automatic transcription on huge heterogenous collections of historical images, so we use transcription accuracy as our metric. We document and leverage our state-of-the-art transcription system as an evaluation harness for scoring our segmenter along with various other competitor segmenters. We then show the effectiveness of our system as it relates to other systems by comparing it to both known data sets (IAM) and to three 50K-word "in the wild" test sets consisting of (a) US handwritten wills and deeds, (b) US historical newsprint images, and (c) Spanish Church and Government records.
the article describes the algorithm component of universal an Earth remote-sensing data (RDS) system. A comparative analysis of algorithmsthat are used to solve problems related to all stages of analysis-preliminary ...
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the proceedings contain 57 papers. the topics discussed include: integrating weather in modelling earthmoving mining operation using distributed simulation with HLA standards;beyond SOI - the NOI nanotransistor -simul...
ISBN:
(纸本)9788885741065
the proceedings contain 57 papers. the topics discussed include: integrating weather in modelling earthmoving mining operation using distributed simulation with HLA standards;beyond SOI - the NOI nanotransistor -simulations results and new challenges;parallel simulation of the n-body problem using Quad-Tree HLPC;e-health bubble: an e-health system for caregiving services dedicated to elderly;model-based imageprocessing approaches for automated person identification and authentication in online banking;surrogate-assisted high-dimensional optimization on microscopic traffic simulators;logic-dynamic model and algorithms of operation complex planning of active mobile objects automated control system;distributed simulation execution on a high-performance cluster using HeuristicLab Hive;comparing machine learning methods on concept drift detection for predictive maintenance;different traffic submodels within scalable unitary hybrid simulator related to railway systems;including co-simulation in modeling and simulation tool for supporting risk management in industrial context;simulation of production line improvements in panelised floor manufacturing;complex nested simulations within simulators reflecting railway traffic;and exploitation of HPC infrastructure services for real-time critical small requests.
Increasing the effectiveness of training and training sessions is possible through the implementation of so-called biological feedback. Such feedback allows the teacher, or the instructor, to continuously monitor the ...
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Increasing the effectiveness of training and training sessions is possible through the implementation of so-called biological feedback. Such feedback allows the teacher, or the instructor, to continuously monitor the current psycho-emotional and functional state of the students. As a result, it becomes possible to adapt the style, pace, training mode and the volume of the material outlined, depending on the current receptivity and fatigue level of the listeners. the main element of systemsthat implement biological feedback in practice are remote non-contact technologies. Such technologies allow in a fully automatic mode to register the main most informative human bio-parameters. Among them, in the first place are the parameters characterizing the current state of the cardiovascular system of man, his breathing system, as well as his peripheral nervous system. the bulk of information is obtained by processing in real time the thermal infrared image of a person's face. Unfortunately, existing algorithms for distinguishing a person's face have a sufficiently high computational complexity and insufficient reliability. A typical example in this regard can be a family of algorithms based on the Viola-Jones approach. the approach proposed in the work is based on taking into account additional information about the most likely location of a person's face on a thermal image. this approach is most appropriate to use in cases of quasi-stationary location of people in the room. A typical example is the location of students at the tables in the classroom. For such cases it is possible to determine the areas of the most probable location of the trainees' faces, as well as the possible boundaries of their movement. Laboratory tests of the developed program on the basis of the proposed algorithm have confirmed its high productivity, as well as efficiency in identifying students faces in the classroom. (C) 2018the Authors. Published by Elsevier Ltd. this is an open access article
the rise of cheaper and more accurate genotyping techniques has lead to significant advances in understanding the genotype-phenotype map. However, this is currently bottlenecked by manually intensive or slow phenotype...
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Modern research devices allow obtaining a large amount of information in remote laser sensing of atmospheric aerosols. However, the increase in the data volume processed by the Fredholm integral equation of the first ...
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ISBN:
(数字)9781510622920
ISBN:
(纸本)9781510622920
Modern research devices allow obtaining a large amount of information in remote laser sensing of atmospheric aerosols. However, the increase in the data volume processed by the Fredholm integral equation of the first kind increases the processing time non-linearly. the paper describes a method using known algorithms for integral equation processing withthe data of aerosols laser sensing. the use of several samples from the transmission spectrum at more than 1000 wavelengths makes it possible to determine the dispersed particles sizes in a short time with an acceptable error. the developed algorithm is approved for determining the granulometric composition of laboratory heterogeneous systems. the results of laser diagnostics and the particle sizes determined from the electron microscope images were compared.
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