The Experts below are selected from a list of 5232 Experts worldwide ranked by ideXlab platform
Wei Shu - One of the best experts on this subject based on the ideXlab platform.
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two novel characteristics in palmprint verification Datum Point invariance and line feature matching
Pattern Recognition, 1999Co-Authors: David Zhang, Wei ShuAbstract:Abstract As the first attempt of automatic personal identification by palmprint, in this paper, two novel characteristics, Datum Point invariance and line feature matching, are presented in palmprint verification. The Datum Points of palmprint, which have the remarkable advantage of invariable location, are defined and their determination using the directional projection algorithm is developed. Then, line feature extraction and line matching are proposed to detect whether a couple of palmprints are from the same palm. Various palmprint images have been tested to illustrate the effectiveness of the palmprint verification with both characteristics.
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palmprint verification an implementation of biometric technology
International Conference on Pattern Recognition, 1998Co-Authors: Wei Shu, David ZhangAbstract:As the important implementation of biometric technology, palmprint verification is one of the most reliable personal identification methods. In this paper, a new approach to palmprint verification based on line feature matching and Datum Point invariance is presented. The Datum Points of palmprint which act as the important registrations, are defined owing to their remarkable advantage of invariable location. Then, the simple and efficient methods of line feature extraction and matching are proposed. Several palmprint images are adopted to test the approach and the experimental results show the effectiveness of palmprint verification.
David Zhang - One of the best experts on this subject based on the ideXlab platform.
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two novel characteristics in palmprint verification Datum Point invariance and line feature matching
Pattern Recognition, 1999Co-Authors: David Zhang, Wei ShuAbstract:Abstract As the first attempt of automatic personal identification by palmprint, in this paper, two novel characteristics, Datum Point invariance and line feature matching, are presented in palmprint verification. The Datum Points of palmprint, which have the remarkable advantage of invariable location, are defined and their determination using the directional projection algorithm is developed. Then, line feature extraction and line matching are proposed to detect whether a couple of palmprints are from the same palm. Various palmprint images have been tested to illustrate the effectiveness of the palmprint verification with both characteristics.
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palmprint verification an implementation of biometric technology
International Conference on Pattern Recognition, 1998Co-Authors: Wei Shu, David ZhangAbstract:As the important implementation of biometric technology, palmprint verification is one of the most reliable personal identification methods. In this paper, a new approach to palmprint verification based on line feature matching and Datum Point invariance is presented. The Datum Points of palmprint which act as the important registrations, are defined owing to their remarkable advantage of invariable location. Then, the simple and efficient methods of line feature extraction and matching are proposed. Several palmprint images are adopted to test the approach and the experimental results show the effectiveness of palmprint verification.
Jurrien Dean - One of the best experts on this subject based on the ideXlab platform.
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Ovarian gene expression in the absence of FIGLA, an oocyte-specific transcription factor-3
2011Co-Authors: Saurabh Joshi, Holly Davies, Lauren Porter Sims, Shawn E Levy, Jurrien DeanAbstract:Copyright information:Taken from "Ovarian gene expression in the absence of FIGLA, an oocyte-specific transcription factor"http://www.biomedcentral.com/1471-213X/7/67BMC Developmental Biology 2007;7():67-67.Published online 13 Jun 2007PMCID:PMC1906760. by FIGLA. A. qRT-PCR of total RNA isolated from somatic and reproductive tract tissues normalized to HPRT and plotted relative to 100% expression in ovary. B. qRT-PCR of total ovarian RNA isolated from normal and null mice at E12.5, E14.5, E17.5 and newborn and plotted relative to HPRT. Data is the average (± s.e.m.) of two independently isolated biological samples, analyzed in triplicate at each developmental time Point. (shaded) missed the statistical cutoff because of a single (out of eight) outlying Datum Point
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Ovarian gene expression in the absence of FIGLA, an oocyte-specific transcription factor-4
2011Co-Authors: Saurabh Joshi, Holly Davies, Lauren Porter Sims, Shawn E Levy, Jurrien DeanAbstract:Copyright information:Taken from "Ovarian gene expression in the absence of FIGLA, an oocyte-specific transcription factor"http://www.biomedcentral.com/1471-213X/7/67BMC Developmental Biology 2007;7():67-67.Published online 13 Jun 2007PMCID:PMC1906760.ntially up-regulated by FIGLA. A. qRT-PCR of total RNA isolated from somatic and reproductive tract tissues normalized to HPRT and plotted relative to 100% expression in ovary. B. qRT-PCR of total ovarian RNA isolated from normal and null mice at E12.5, E14.5, E17.5 and newborn and plotted relative to HPRT. Data is the average (± s.e.m.) of two independently isolated biological samples, analyzed in triplicate at each developmental time Point. [Genbank:] (shaded) missed the statistical cutoff because of a single (out of eight) outlying Datum Point
Trask, Mendeley M Data) - One of the best experts on this subject based on the ideXlab platform.
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Protection Current Density Datum Measurements
2020Co-Authors: Trask, Mendeley M Data)Abstract:This data describes the list of current density Datum Point measurements for AISI 1018 CS found at a flow velocity of 2.5 m/s and 0 wt.% sand concentration in saturated potash brine to ensure the comparability of data within different data sets at higher flowrates. Before experiments were performed at higher flow rates, measurements at a flow velocity of 2.5 m/s and 0 wt.% sand concentration are performed. If the current density to protect the steel elbow at this condition is the same prior to each experiment, the results of the experiments are comparable to each other. The data shown displays the Datum Points acquired prior to experiments performed at four different flowrates
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Protection Current Density Datum Measurements
2020Co-Authors: Trask, Mendeley M Data)Abstract:List of current density Datum Point measurements for AISI 1018 CS found at a flow loop velocity of 2.5 m/s and 0 wt.% sand concentration in saturated potash brine to ensure the comparability of data within different data sets at higher flowrates. Before experiments were performed at higher flow rates, measurements at a flow velocity of 2.5 m/s and 0 wt.% sand concentration are performed. If the current density to protect the steel elbow at this condition is the same prior to each experiment, the results of the experiments are comparable to each other. The data shown displays the Datum Points acquired prior to experiments performed at four different flowrates
Dae Wook Kim - One of the best experts on this subject based on the ideXlab platform.
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parametric geometry analysis for circular aperture off axis parabolic mirror segment
Journal of Astronomical Telescopes Instruments and Systems, 2019Co-Authors: Jeongyeol Han, Sukmock Lee, Dae Wook KimAbstract:We investigated the geometrical characteristics of circular-aperture off-axis parabolic (OAP) mirror segments to clarify the meaning of the loosely defined word “center” used in the literature and in documents to describe OAPs. We proposed the elliptical aperture center of an OAP as the definition of the center. The off-axis distance (OAD) is the vertical distance from the reference optical axis to the aperture center. In addition, the OAD can be varied depending on the desired center of a circular aperture to select the part of a parallel beam for focusing. The radius of the circular aperture becomes the minor-axis semidiameter of the elliptical aperture of the OAP. These geometrical parameters were systematically defined, derived, and/or analyzed in the context of optical engineering applications. Based on a set of those fundamental parameters, an intrinsic Datum Point utilizing the deepest Point on the OAP surface was presented. The Datum Point provides a well-defined reference co-ordinate frame for locating or aligning an OAP within various astronomical telescope designs, instrument manufacturing and assembly processes, and optical system alignment and testing applications.
