• Title/Summary/Keyword: on-line measurement

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A Study on the Visual Image by Pattern Drafting of Tailored Collar (Tailored Collar 패턴 제도법에 따른 시각적 이미지 연구)

  • Lee, Bo-Na;Suh, Mi-A
    • The Research Journal of the Costume Culture
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    • v.14 no.4
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    • pp.609-624
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    • 2006
  • The purpose of this study is to give the guideline to the pattern designing by supplying various images of the transformed shape of tailored collar with the location and angle of gorge line and laying measurement of the tailored collar while designing the tailored collar. The results of this study are as follows : Images of the sample at the case of 1cm of laying measurement looks 'urban', 'light', 'sharp', 'young', 'fashionable' and 'narrow' than that at the case of 7cm. When the laying measurement increases, the image of the sample looks more 'classical' and 'boorish'. The image of the sample 'light', 'sensuous' and 'young' at the case of sample of which laying measurements of the collar was 3cm. Second, at the case of sample whose laying measurements of the collar was 5cm, it was shown that the low location of gorge line made the image of the sample 'soft' and 'short'. On the other hand the image of the sample looked 'hard', 'keen' and 'long' by the high location of gorge line. Third, at the case of sample of which laying measurements of the collar was 7cm, low location of gorge line made the image of the sample look short. However, normal location of gorge line made the image of the sample looked 'fashionable'. The images of the samples of which laying measurements of the collar were 3cm, 5cm and 7cm, respectively, had changed with the angle of gorge line. First, the high angle of gorge line made the image of the sample 'rigid' and 'keen' at the case of sample of which laying measurements of the collar was 3cm. The high angle of gorge line made the image of the sample looked 'boorish' and 'singular'.

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Fitness Measurement system using deep learning-based pose recognition (딥러닝 기반 포즈인식을 이용한 체력측정 시스템)

  • Kim, Hyeong-gyun;Hong, Ho-Pyo;Kim, Yong-ho
    • Journal of Digital Convergence
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    • v.18 no.12
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    • pp.97-103
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    • 2020
  • The proposed system is composed of two parts, an AI physical fitness measurement part and an AI physical fitness management part. In the AI fitness measurement part, a guide to physical fitness measurement and accurate calculation of the measured value are performed through deep learning-based pose recognition. Based on these measurements, the AI fitness management part designs personalized exercise programs and provides them to dedicated smart applications. To guide the measurement posture, the posture of the subject to be measured is photographed through a webcam and the skeleton line is extracted. Next, the skeletal line of the learned preparation posture is compared with the extracted skeletal line to determine whether or not it is normal, and voice guidance is provided to maintain the normal posture.

Real-time measurement of the width of piston ring groove on the grinding process (연삭가공 중인 피스톤 링 그루브의 실시간 연삭폭 측정법 개발)

  • Kim, Byoung-Chang
    • Journal of the Korean Society of Manufacturing Process Engineers
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    • v.13 no.2
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    • pp.28-34
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    • 2014
  • A non-contact type measurement system is specially devised to measure the width of a piston ring groove in the grinding process. This system comprises a line camera with an imaging lens, collimated white light source, and a one axis translation stage. When the measurement system movesalong the diagonal direction of the cylinder, the line camera captures an image. By analyzing such images, the width of the piston ring groove can be determined. The experimental results prove that the proposed system is useful, especially as a monitoring system in grinding piston ring grooves on cylinders with accuracy of several micrometers in an area of dozens of millimeters.

Power-line phase measurement algorithm based on the sliding-DFT (Sliding-DFT에 기반한 전력선 위상 측정 기법)

  • 안병선;김병일;장태규
    • Proceedings of the IEEK Conference
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    • 2003.07e
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    • pp.2192-2195
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    • 2003
  • This parer proposes a power-line phase measurement algorithm which is based on the recursive implementation of sliding-DFT. Usage of the single DFT coefficient in the conventional sliding-DFT based power-line phase measurement brings a significant error propagation when implemented in hardware with finite word-length arithmetic operations. The proposed algorithm utilizes all the N-point DFT coefficients in the recursion. Performance degradation caused by the finite word- length implementation of the algorithm is analyzed and verified with computer simulations. The robustness of the proposed phase measurement algorithm against the erroneous implementation is also confirmed by the performance analysis and simulation.

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Salinity Determination for Sea Water Using Immersion-Type On-Line Refractometer (침적식 온라인 굴절계를 이용한 해수의 염도 측정)

  • Kim, Byoung-Chul;Kim, Young-Han;Chan, Sang-Mok
    • Journal of Navigation and Port Research
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    • v.26 no.5
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    • pp.571-575
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    • 2002
  • An immersion-type on-line refractometer useful for the in-situ measurement of salinity and temperature of sea water is developed, and its performance is examined by applying the refractometer to known salt solution having salt concentration between 2 and 4 % similar to practical sea water salinity. Since refractive index and temperature are measured simultaneously, it is possible to compensate the effect of temperature for fast and direct measurement. The outcome of salinity measurement for the different concentrations of salt solution indicates that the device is suitable for the salinity measurement by yielding stable and reproducible reading.

The measurement and evaluation of catenary system by using electric rolling stock on Honam-Line electrified (전철화된 호남선에서의 전기차량에 의한 전차선로 측정 및 평가)

  • Ahn Young-Hoon;Hyun Chung-il
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.1286-1291
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    • 2004
  • This paper was showed evaluation method and technical items for measurement test of new catenary system of Honam(Daejeon - Mokpo) conventional railway electrified. This line have tested by three type new electric rolling stocks in order to test construction quality and operation safety of a new catenary system with speed-up than conventional speed. We have some important experiences through measurement test of catenary system by new device installed on train roof.

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On-line Measurement of Buffer Capacity of a Fermentation medium and Estimation of Organic Aicd Production (발효배지의 완충용량의 온라인 측정 및 유기산 생산 추정)

  • Hur, Won;Jung, Yoon-Keun
    • KSBB Journal
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    • v.13 no.4
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    • pp.461-467
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    • 1998
  • A fermentation system was supplemented with a device for the measurement of the durations of alkali pump feeding for automatic pH control and an A/D convertor for precise monitoring of pH value by computer. A software program was developed to measure buffer capacities from the pH signal and the pH control signal during fermentation. By measuring the buffer capacity on-line, levels of acetic acid were estimated by a software sensor using pH signal in a fermentation process of E.coli growing in a minimal medium. The measured values of acetic acid showed correlation to those of estimated by the software sensor. Lacitic acid production was also successfully estimated by the values of buffer capacities measured on-line.

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Non-invasive Methods for Determination of Cellular Growth in Podophyllum hexandrum Suspension Cultures

  • Chattopadhyay, Saurabh;Bisaria, V.S.;Scheper, T.;Srivastava, A.K.
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.7 no.6
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    • pp.331-334
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    • 2002
  • Culture conductivity and on-line NADH fluorescence were used to measure cellular growth in plant cell suspension cultures of Podophyllum hexandrum. An inverse correlation between dry cell weight and medium conductivity was observed during shake flask cultivation. A linear relationship between dry cell weight and culture NADH fluorescence was obtained during the exponential phase of batch cultivation In a bioreactor under the pH stat (pH 6) conditions. It was observed that conductivity measurement were suitable for biomass characterisation under highly dynamic uncontrolled shake flask cultivation conditions. However, if the acid/alkali feeding is done for pH control the conductivity measurement could not be applied. On the other hand the NADH fluorescence measurement allowed online-in situ biomass monitoring of rather heterogenous plant cell suspension cultures in bioreactor even under the most desirable pH stat conditions.

Development of On-line Wrinkle Measurement System Using Machine Vision (머신 비젼을 이용한 실시간 링클 측정 시스템 개발)

  • Shin, Dong-Keun;To, Hoang-Minh;Ko, Sung-Lim
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.32 no.3
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    • pp.274-279
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    • 2008
  • Roll to roll (R2R) manufacturing process, also known as 'web processing', has been tried for producing electronic devices on a flexible plastic or metal foil. To increase the performance and productivity the R2R process, effective control and on-line supervision for web quality becomes very important. Wrinkle is one of the defects, which is incurred due to compressive stresses. A system for on-line measurement of wrinkle is developed using area scan camera and machine vision laser. The 2D image, obtained by area scan camera, is produced by Gaussian regression method to characterize the wrinkle on a transparent web. The experiment proves that 0.3mm wrinkle height can be measured successfully with 74fps.

Velocity Measurement of Fast Moving Object for Traffic Information Acquisition (트래픽 정보 취득을 위한 고속이동물체 속도 측정)

  • Lee Jooshin
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.29 no.11C
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    • pp.1527-1540
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    • 2004
  • In this paper, velocity measurement of fast moving object for traffic information acquisition using line sampling of image is proposed. Velocity measurement for traffic information acquisition of moving object is that the first sample line and second sample line on the road is set, then car is detected by using difference image method between time-variance hue data of image when car is passing two sample lines and hue data of the reference image, and velocity of the car is measured by using frame number of video which is occupied by two sample lines. Identification of the car is performed by hue of the detected car between the first sample line and second sample line, respectively To examine the propriety of the proposed algorithm, identification and velocity measurement for driving car is evaluated. The evaluated results is that it is identified by hue data of car passing two sample lines, and the velocity measurement for driving car is less than 3% comparing with X-band speed gun.