• Title/Summary/Keyword: Automatic pattern

Search Result 636, Processing Time 0.025 seconds

A Study on dart manipulation of women`s front bodice by CAD System(I)-the comparison automatic manopulating functions of dart in CAD system and the classification the dart of women`s front bodice- (CAD시스템을 이용한 앞길의 다트변형에 관한 연구(I)-CAD의 다트 자종변환기능의 비교분석 및 앞길 다트 분류를 중심으로-)

  • 조영아
    • Journal of the Korean Home Economics Association
    • /
    • v.34 no.5
    • /
    • pp.249-264
    • /
    • 1996
  • The purpose of this study was to investigate automatic manipulating functions of dart of CAD system, and to classify the dart of women's front bodice. The results from this study: 1.3 CAD systems, were compared in automatic manipulating functions of dart. Gerber system & Investronica system were based on the pivot-method of dart manipulating, Yuka system was based on the slash-method. 2. It is classified and made a dart-design chart with using darts, which were as examples related to dart manipulating in text & reference of the pattern design. 3. In case of education of dart manipulation, the classified dart-design chart provides variations of a basic pattern through dart manipulation.

  • PDF

Automatic In-Text Keyword Tagging based on Information Retrieval

  • Kim, Jin-Suk;Jin, Du-Seok;Kim, Kwang-Young;Choe, Ho-Seop
    • Journal of Information Processing Systems
    • /
    • v.5 no.3
    • /
    • pp.159-166
    • /
    • 2009
  • As shown in Wikipedia, tagging or cross-linking through major keywords in a document collection improves not only the readability of documents but also responsive and adaptive navigation among related documents. In recent years, the Semantic Web has increased the importance of social tagging as a key feature of the Web 2.0 and, as its crucial phenotype, Tag Cloud has emerged to the public. In this paper we provide an efficient method of automated in-text keyword tagging based on large-scale controlled term collection or keyword dictionary, where the computational complexity of O(mN) - if a pattern matching algorithm is used - can be reduced to O(mlogN) - if an Information Retrieval technique is adopted - while m is the length of target document and N is the total number of candidate terms to be tagged. The result shows that automatic in-text tagging with keywords filtered by Information Retrieval speeds up to about 6 $\sim$ 40 times compared with the fastest pattern matching algorithm.

Development of Automatic Precision Inspection System for Defect Detection of Photovoltaic Wafer (태양광 웨이퍼의 결함검출을 위한 자동 정밀검사 시스템 개발)

  • Baik, Seung-Yeb
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.20 no.5
    • /
    • pp.666-672
    • /
    • 2011
  • In this paper, we describes the development of automatic inspection system for detecting the defects on photovoltaic wafer by using machine vision. Until now, The defect inspection process was manually performed by operators. So these processes caused the produce of poorly-made articles and inaccuracy results. To improve the inspection accuracy, the inspection system is not only configured, but the image processing algorithm is also developed. The inspection system includes dimensional verification and pattern matching which compares a 2-D image of an object to a pattern image the method proves to be computationally efficient and accurate for real time application and we confirmed the applicability of the proposed method though the experience in a complex environment.

Intelligent Pattern Matching Based on Geometric Features for Machine Vision Inspection (머신비전검사를 위한 기하학적 특징 기반 지능 패턴 정합)

  • Moon Soon-Hwan;Kim Gyung-Bum;Kim Tae-Hoon
    • The Journal of the Korea Contents Association
    • /
    • v.6 no.6
    • /
    • pp.1-8
    • /
    • 2006
  • This paper presents an intelligent pattern matching method that can be used to acquire the reliable calibration data for automatic PCB pattern inspection. The inaccurate calibration data is often acquired by geometric pattern variations and selecting an inappropriate model manual. It makes low the confidence of inspection and also the inspection processing time has been delayed. In this paper, the geometric features of PCB patterns are utilized to calculate the accurate calibration data. An appropriate model is selected automatically based on the geometric features, and then the calibration data to be invariant to the geometric variations(translation, rotation, scaling) is calculated. The method can save the inspection time unnecessary by eliminating the need for manual model selection. As the result, it makes a fast, accurate and reliable inspection of PCB patterns.

  • PDF

A study on the determination of gear ratios and shifting pattern of automatic transmission for increasing vehicle performance (동력성능 향상을 위한 차량용 자동 변속기의 최적 변속비 및 변속 패턴 결정에 관한 연구)

  • 조선휘;류길하;김태용
    • Transactions of the Korean Society of Mechanical Engineers
    • /
    • v.14 no.6
    • /
    • pp.1436-1445
    • /
    • 1990
  • Performance of vehicles depends mainly on engine performance, transmission gear ration and shifting pattern. In this paper, determination method of gear ratios and shifting pattern for automatic transmission equipped vehicles has been proposed. Computer programs for gear ratio determination and shifting pattern decision using optimal design technique have been developed for the purpose of increasing vehicle acceleration performance. For preceding study, computer simulation of vehicle performance is carried out using numerical technique.

Automatic control of experimental apparatus for sound's directivity measurement direction acoustic wave (소리의 방향성 측정을 위한 실험기기의 자동제어)

  • Jarang, Sun-Suck;Ko, Jae-Ha;Lee, Je-Hyeong
    • Proceedings of the KSME Conference
    • /
    • 2004.11a
    • /
    • pp.591-594
    • /
    • 2004
  • The directivity of the sound pressure increases the sensitivity of the incoming sound from specific directions. The directivity measurement of the sound pressure is usually done in an anechoic room using a steping motor. In this paper a replaceable anechoic chamber was designed for the acoustic directivity pattern measurement. Electrical equipments were interfaced with a PC for experiment automatic control. Some comparative results are shown in the result.

  • PDF

Algorithm for Automatic Interpretation of Cartographic Information (지리 정보 추출의 자동화 알고리듬)

  • Oh, Suk
    • Journal of the Korea Society of Computer and Information
    • /
    • v.5 no.4
    • /
    • pp.21-27
    • /
    • 2000
  • This paper is keeping with the general pattern of automatic acquisition and interpretation of geographical digital data. Maps of the Institut Geographique National of France are built up with four so-called "mother" maps represented by four colors. The green one deals with the vegetation. In a green layer, woods, bushes, vines. fields and boundaries of domanial forests or nature reserves are represented by different synthetic textures We present here an original method of texture analysis applied to the automatic interpretation of vegetation belts.

  • PDF

The Decision Algorithm for Driving inclnaction at incline load Using Moduled Neural Network (모듈 형태의 신경망을 이용한 경사 도로 주행시 운전성향 판단 알고리즘)

  • 김성주;강준영;김용택;서재용;전홍태
    • Proceedings of the Korean Institute of Intelligent Systems Conference
    • /
    • 2002.05a
    • /
    • pp.256-259
    • /
    • 2002
  • Recently, most vehicles has the Automatic transmission system as their transmission system. The automatic transmission system operates with fixed shift patterns. In the opposite of manual operation, it is easy and convenient for driving. Though these merit, the system can not evaluate the driver's intension because of usage of firmed shift pattern. Especially, when the load has declination the AT system must operate for engine break effect. Namely, if the vehicle drives on the load of decrease, the acceleration of the vehicle goes to high then. At that time, the shift goes to down position the vehicle has some negative acceleration with the resistance of engine. To consider driver's intension in this case, we must consider both the driving intensity of driver and the status of load. In this paper, we developed flexible automatic transmission system by using the proposed moduled neural networks which can learn the status of the load and driver's intensity As a result, we compare the transmission system using firmed shift pattern and the proposed transmission system and show the good performance in the change of shift position.

  • PDF

Intelligent Automatic Transmission System Using Soft Computing (소프트 컴퓨팅에 의한 지능형 자동변속 시스템)

  • Kim Seong-Joo;Choi Woo-Kyung;Jeon Hong-Tae
    • Journal of the Korean Institute of Intelligent Systems
    • /
    • v.15 no.1
    • /
    • pp.30-35
    • /
    • 2005
  • An automatic transmission pattern with the fixed standard shift map can provide comfortable shift to driver. However it may be a complain to provide shift by the same shift pattern for driver because the inclination of a driver may be various. Therefore, in this paper, we design the decision module, which can decide the driving style using input to decide the inclination of the driver and driving manner. The goal of this paper is to calibrate the shift map according to the inclination of the driver using the decided driving manner from the proposed module. As a result, the proposed intelligent automatic transmission system can provide a suitable shift point and time to the driver. To verify the performance of the proposed system, the real data that is obtained from the road test will be used.

Characteristics Analysis of Automatic Transmission for the Wheel-Loader with Shift Control Algorithm (변속제어 알고리즘을 적용한 휠로더 자동변속기 특성 해석)

  • Oh, Joo-Young;Yun, Ung-Kwon;Park, Young-Jun;Lee, Geun-Ho;Song, Chang-Seop
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.20 no.5
    • /
    • pp.639-645
    • /
    • 2011
  • Wheel-loader is a construction vehicle for uploading soil or sand into truck and transportation of materials, which requires large driving power and high rotational speed. To improve the working efficiency, the operator has to shift gears and control levers for bucket & boom simultaneously. Therefore, the automatic transmission has been introduced to enhance operator's convenience and enable effective operation. To develop the automatic transmission for the wheel-loader, technologies such as gears and a clutch-pack design and shift algorithm are required for improvement of shift quality. In this paper, the shift algorithm for the wheel-loader was developed and its shift pattern was analyzed. As the shift control is affected by the pressure profile for the clutch control, the shift quality depending on the pressure profile has been evaluated using experiment and simulation model analysis.