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European Conference on Circuit Theory and Design (ECCTD)

作者： Senger, Vanessa Tetzlaff, Ronald Mueller, Jens Hoffmann, Nico Hollmach, Julia Schnabel, Christian Radev, Yordan Kirsch, Matthias Petersohn, Uwe Steiner, Gerald Koch, Edmund Tech Univ Dresden Fac Med Clin Sensoring & Monitoring D-01307 Dresden Germany Tech Univ Dresden Univ Hosp Dept Neurosurg D-01307 Dresden Germany Tech Univ Dresden Fac Comp Sci Appl Knowledge Representat & Reasoning D-01062 Dresden Germany Tech Univ Dresden Fac Elect & Comp Engn Chair Fundamentals Elect Engn D-01062 Dresden Germany

ISBN: (纸本)9781479998777

Neurosurgery relies strongly on medical imaging techniques. However, many state-of-the-art diagnostic tools such as computer tomography (CT) and magneto-resonance imaging (MRI) cannot be applied during ongoing surgery in general. Our aim is to realize a multi-purpose imaging platform capable of real-time assistance to the surgeon. Therefore, we apply thermography: a non-invasive, contactless, marker-free technique that has been used in various medical applications, albeit some challenges remain. In this paper, we propose a Cellular Nonlinear Network -based image pre-processing for feature enhancing and extraction followed by a cepstrum-based motion correction algorithm allowing a real-time removal of breathing artifacts from thermographic images.

关键词： Neurosurgery correction algorithm images X-Ray Computed Tomography

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Increasing the Accuracy of Data-Measuring Systems for the Nondestructive Testing of the Thermal Properties of Solids

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MEASUREMENT TECHNIQUES 2015年第9期58卷 1010-1015页

作者： Selivanova, Z. M. Khoan, T. A. Tambov State Tech Univ Tambov Russia

A solution of the problem of increasing the accuracy of a data-measuring system for the nondestructive testing of the thermal properties of materials is proposed. An algorithm for correcting the technical imperfection of the structural components of the system, based on the use of a mathematical model of the measurement procedure and information on influencing destabilizing factors, is developed.

关键词： data-measuring system thermal properties of materials mathematical model intelligent sensor correction algorithm

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Spatial Intensity Distribution Analysis Reveals Abnormal Oligomerization of Proteins in Single Cells

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BIOPHYSICAL JOURNAL 2015年第4期109卷 710-721页

作者： Godin, Antoine G. Rappaz, Benjamin Potvin-Trottier, Laurent Kennedy, Timothy E. De Koninck, Yves Wisemant, Paul W. McGill Univ Dept Phys Montreal PQ Canada Inst Univ Sante Mentale Quebec Quebec City PQ Canada McGill Univ Montreal Neurol Inst Dept Neurol & Neurosurg Montreal PQ H3A 2B4 Canada McGill Univ Program NeuroEngn Montreal PQ Canada Univ Laval Dept Psychiat & Neurosci Quebec City PQ Canada McGill Univ Dept Pharmacol & Therapeut Montreal PQ Canada McGill Univ Alan Edwards Ctr Res Pain Montreal PQ Canada McGill Univ Dept Chem Montreal PQ Canada

Knowledge of membrane receptor organization is essential for understanding the initial steps in cell signaling and trafficking mechanisms, but quantitative analysis of receptor interactions at the single-cell level and in different cellular compartments has remained highly challenging. To achieve this, we apply a quantitative image analysis technique-spatial intensity distribution analysis (SpIDA)-that can measure fluorescent particle concentrations and oligomerization states within different subcellular compartments in live cells. An important technical challenge faced by fluorescence microscopy-based measurement of oligonnerization is the fidelity of receptor labeling. In practice, imperfect labeling biases the distribution of oligomeric states measured within an aggregated system. We extend SpIDA to enable analysis of high-order oligomers from fluorescence microscopy images, by including a probability weighted correction algorithm for nonemitting labels. We demonstrated that this fraction of nonemitting probes could be estimated in single cells using SpIDA measurements on model systems with known oligonnerization state. Previously, this artifact was measured using single-step photobleaching. This approach was validated using computer-simulated data and the imperfect labeling was quantified in cells with ion channels of known oligomer subunit count. It was then applied to quantify the oligomerization states in different cell compartments of the proteolipid protein (PLP) expressed in COS-7 cells. Expression of a mutant PLP linked to impaired trafficking resulted in the detection of PLP tetramers that persist in the endoplasmic reticulum, while no difference was measured at the membrane between the distributions of wild-type and mutated PLPs. Our results demonstrate that SpIDA allows measurement of protein oligomerization in different compartments of intact cells, even when fractional mislabeling occurs as well as photobleaching during the imaging process, and revea

关键词： single-step COMPARTMENT SINGLE CELL imaging processes intensity distribution correction algorithm Oligomerisation Photobleaching cell level Fluorescence microscopy

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Erratum:Erratum to: A sparse matrix model-based optical proximity correction algorithm with model-based mapping between segments and control sites

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浙江大学学报（英文版）（C辑：计算机与电子） 2011年第7期12卷 614-614页

作者： Bin LIN Xiao-lang YAN Zheng SHI Yi-wei YANG Institute of VLSI Design Zhejiang University Hangzhou 310027 China

In the online version of the original article,Fig.11 was *** correct version is given below.

关键词： control mapping correction algorithm version

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Rayleigh-backscattering Doppler broadening correction for differential absorption lidar

Rayleigh-backscattering Doppler broadening Correction for di...

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国防光电子论坛第二届激光雷达成像探测技术及应用研讨会

作者：范兰兰 Yinchao ZHANG Si-ying CHEN Pan GUO He CHEN Key Laboratory of Photo-electronic Imaging Technology and System Beijing Institute of Technology

The spectral broadening by Rayleigh backscattering can cause large changes in water vapor echo signals, causing errors when the water vapor concentration is inversed by differential absorption lidar（DIAL）. A correction algorithm is proposed to revise the errors due to the effect of laser spectral broadening. The relative errors of water vapor are calculated in cases of different aerosol distribution and temperature changes before and after correction. The results show that measurement errors due to the Doppler broadening are more than 5% before correction and a 2% measurement error after corrected for the case of a smooth, background aerosol distribution. However, due to the high aerosol gradients and strong temperature inversion, errors can be up to 40% and 10% with no corrections for this effect, respectively. The relative errors can reduce to less than 2% after correction. Hence, the correction algorithm for Rayleigh Doppler broadening can improve detection accuracy in HO DIAL measurements especially when it is applied to high aerosol concentration or strong temperature inversion.

关键词： Atmospheric optics Doppler broadening Rayleigh backscattering correction algorithm Range-resolved DIAL Water vapor remote sensing

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correction of rotational distortion for catheter-based en face OCT and OCT angiography

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OPTICS LETTERS 2014年第20期39卷 5973-5976页

作者： Ahsen, Osman O. Lee, Hsiang-Chieh Giacomelli, Michael G. Wang, Zhao Liang, Kaicheng Tsai, Tsung-Han Potsaid, Benjamin Mashimo, Hiroshi Fujimoto, James G. MIT Dept Elect Engn & Comp Sci Cambridge MA 02139 USA MIT Elect Res Lab Cambridge MA 02139 USA Thorlabs Inc Adv Imaging Grp Newton NJ 07860 USA Vet Affairs Boston Healthcare Syst Boston MA 02130 USA Harvard Univ Sch Med Boston MA 02115 USA

We demonstrate a computationally efficient method for correcting the nonuniform rotational distortion (NURD) in catheter-based imaging systems to improve endoscopic en face optical coherence tomography (OCT) and OCT angiography. The method performs nonrigid registration using fiducial markers on the catheter to correct rotational speed variations. algorithm performance is investigated with an ultrahigh-speed endoscopic OCT system and micromotor catheter. Scan nonuniformity is quantitatively characterized, and artifacts from rotational speed variations are significantly reduced. Furthermore, we present endoscopic en face OCT and OCT angiography images of human gastrointestinal tract in vivo to demonstrate the image quality improvement using the correction algorithm. (C) 2014 Optical Society of America

关键词： Quality Improvement Fiducial Markers correction algorithm Angiography Catheters Gastrointestinal Tract optical coherence tomography

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correction of nonlinear lateral distortions of scanning probe microscopy images

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ULTRAMICROSCOPY 2014年 136卷 86-90页

作者： Schnedler, M. Weidlich, P. H. Portz, V. Weber, D. Dunin-Borkowski, R. E. Ebert, Ph Forschungszentrum Julich Peter Grunberg Inst D-52425 Julich Germany

A methodology for the correction of scanning probe microscopy image distortions is demonstrated, It is based on the determination of displacement vectors from the measurement of a calibration sample. By moving the pixels of the distorted scanning probe microscopy image along the displacement vectors an almost complete correction of the nonlinear, time independent distortions is achieved. (C) 2013 Elsevier B.V. All rights reserved.

关键词： Scanning probe microscopy Image distortions correction algorithm Calibration

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Experimental and Theoretical Considerations on the Offset correction of Transient Cooling Curves of Light Emitting Diodes Based on JESD51-14 20

Experimental and Theoretical Considerations on the Offset Co...

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20th International Workshop on Thermal Investigations of ICs and Systems (THERMINIC)

作者： Daiminger, Franz Xaver Gruber, Martin Dendorfer, Christian Zahner, Thomas Deggendorf Inst Technol Deggendorf Germany Osram Opto Semicond Regensburg Germany

ISBN: (纸本)9781479954155

Determination of the thermal resistance of high power light emitting diodes by transient thermal measurements is of rapidly growing interest. Due to electrical disturbances at small delay times, correction algorithms like the offset correction described in JESD51-14 are necessary. A simple model based on a mean temperature is presented which gives insight into the physics of this correction algorithm. It both allows for a rough estimate of time intervals where the correction algorithm is applicable in ideal cases, and it can be used to detect the presence of an interface resistance between the substrate and the package. Measurements and numerical simulations reveal that a significant interface resistance between the epi-layer and the substrate leads to a modification of the thermal transient. Offset correction then leads to an error in the determined thermal resistance in the range of several percent depending on the magnitude of the interface resistance.

关键词： cooling light emitting diodes numerical analysis thermal resistance JESD51-14 electrical disturbances epi-layer interface resistance mean temperature numerical simulations offset correction thermal transient time intervals transient cooling curves transient thermal measurements Heating Light emitting diodes Mathematical model Temperature measurement Thermal resistance Transient analysis bias calibration Light emitting diodes Thermal resistance interface resistance thermal transient correction algorithm Transient analysis temperature measurement Time intervals ELECTRICAL INTERFERENCE Numerical Analysis

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Calculating the Leaf-Area Based on Non-Loss correction algorithm

Calculating the Leaf-Area Based on Non-Loss Correction Algor...

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2010 International Conference of Informationa Science and Management Engineering(2010年信息科学与管理工程国际学术会议 ISME 2010)

作者： Tan Feng Wang Chun College of Information and Technology Heilongjiang Bayi Agricultural University DaQing China College of Engineering Heilongjiang Bayi Agricultural University DaQing China

In order to realize non-lost measurement of Characters on plant leaves , a method based bilinear mapping has been advanced. Firstly, Bilinear space transformation is used to mapping the pixels position between distortion image and original image, secondly, calculating the value of leaf-area and related values. The validity of measurement has not been influenced by size and figure differentia, the experiment shows that distort image of plant leaves can be corrected, and effective area can be extracted commendably, the accuracy can reach to more than 99％ when using this method to correct the images of plant leaves, the results shows that the method of technology of computer vision is accurate, simple and convenient in measuring leaf area , which is very important to the collecting and use of plant information of digital agriculture.

关键词： Image Processing Soybean Plant leaves Theory of Bilinear mapping correction algorithm

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Prefeasibility Study of a Solar Power Plant Project and Optimization of a Meteorological Station Performance

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JOURNAL OF APPLIED RESEARCH AND TECHNOLOGY 2014年第1期12卷 72-79页

作者： Derouich, W. Besbes, M. Olivencia, J. D. Univ Carthage High Sch Technol & Comp Sci Tunis 2035 Tunisia ABENGOA SOLAR Int Business Dev Dept Seville Spain

A prefeasibility study of a solar power plant project was carried out in order to study and search the best location to install a concentrated solar power plant according to a tender with the Algerian electricity company "SPE" following a specific criteria and methodology in order to obtain a site with a maximum possible irradiation along with other economic constraints. Normally, eleven years of solar irradiation data from an on-ground weather station is needed for site assessment, such data are not available, hence the typical meteorological year irradiation based on satellite imagery results is needed in order to have the accurate value, therefore we can give the right evaluation for the site candidate. Additionally, an analysis of a weather measurement station was carried out to ensure the proper functioning of the weather data reception and analysis processes, and thus to optimize the algorithm of a data logger in order to get the right measurement with a minimum error. The correction algorithm was developed by weather scientists and was added to the data logger main program.

关键词： site assessment satellite imagery direct normal irradiation data logger correction algorithm meteorological station pyranometer

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