• 제목/요약/키워드: Pattern inspection

검색결과 413건 처리시간 0.021초

IC핀 조사를 위한 시각 조사 방법 (Visual Inspection Method by Pyramid Data Structure)

  • 최성진;조동래;김영해;나극환;김춘길
    • 한국통신학회논문지
    • /
    • 제15권5호
    • /
    • pp.374-383
    • /
    • 1990
  • 시각조사의 일은 대부분 숙련된 조사자에 의해 이루어지므로 시간이 경과 할수록 조사의 질은 감소한다. 그러므로 조사과정의 자동화가 요구되고 있으며, 실용적인 시각조사시스템을 위해서는 실시간에서의 데이터 처리능력, 다양한 입력물체에 대한 유연성 및 저렴한 시설비가 요구된다. 본 논문에서는 이러한 요구에 적합한 조사방법을 제안한다. 기존의 하드웨어 방식과는 달리 소프트웨어에 의해 조사데이터를 처리함으로써 조사시스템을 유연성 있게 하기 위하여 피라미드 데이터구조를 이용한 divide-and-conquer 기술과 간소화된 패턴 매칭방법을 결합한 시각조사 알고리즘을 제시한다. 이 방법에 의해 비교되는 패턴의 데이터 수를 감소시킬 수 있었고, 그 결과 조사속도를 줄일 수 있었다.

  • PDF

Application of image processing to automated sewing system

  • Takagi, Yoichi;Kato, Masayasu;Yoshioka, Tatsuo
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 22-24 Oct. 1991
    • /
    • pp.1742-1747
    • /
    • 1991
  • Since inspection, ID-code recognition, and pattern match processes requiring vision depend upon the high-grade human recognition capability, these processes have conventionally caused a bottle-neck in automatizing sewing system. However, the authors have recently developed the technology of inspecting the surface defects of textiles and recognizing ID-code by fully utilizing the image processing technology. In the ID-code recognition technology, the most difficult data given on patterns can be read as a result of developing the image processing technology and eliminating noises by using a special (fluorescent) ink. The inspection and pattern match technology was verified to be able to put into practical use through evaluation experiments in an experimental plant.

  • PDF

배관용접부 결함검사 자동화 시스템 개발 (The Development of Automatic Inspection System for Flaw Detection in Welding Pipe)

  • 윤성운;송경석;차용훈;김재열
    • 한국공작기계학회논문집
    • /
    • 제15권2호
    • /
    • pp.87-92
    • /
    • 2006
  • This paper supplements shortcoming of radioactivity check by detecting defect of SWP weld zone using ultrasonic wave. Manufacture 2 stage robot detection systems that can follow weld bead of SWP by method to detect weld defects of SWP that shape of weld bead is complex for this as quantitative. Also, through signal processing ultrasonic wave defect signal system of GUI environment that can grasp easily existence availability of defect because do videotex compose. Ultrasonic wave signal of weld defects develops artificial intelligence style sightseeing system to enhance pattern recognition of weld defects and the classification rate using neural net. Classification of weld defects that do fan Planar defect and that do volume defect of by classify.

볼트로 접합된 인장 이음부의 거동 (The Behavior of Tension Splices Fastened with Bolted Connections)

  • 최병정
    • 한국구조물진단유지관리공학회 논문집
    • /
    • 제9권1호
    • /
    • pp.225-232
    • /
    • 2005
  • 본 연구는 인장력을 받는 인장이음의 응력분포 및 인장파괴거동의 결과를 제시하였다. 본 연구에서 이음부의 볼트 배열방식은 정열배치와 엇모배치를 사용하였다. 실험값의 검증을 위해서 유한요소 해석을 실시하여 응력분포패턴을 파악하였다. 인장실험을 통해서 이음재의 항복 및 최대인장응력, 응력의 분포비, 유효단면적의 검토를 비교하여 차이점을 분석하여 보았다.

3차원 모델링과 반복비교를 통한 TFT-LCD 패널의 결점 검출 (Defect Inspection of TFT-LCD Panel using 3D Modeling and Periodic Comparison)

  • 이경민;장문수;박부견
    • 대한전기학회:학술대회논문집
    • /
    • 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
    • /
    • pp.149-150
    • /
    • 2007
  • In this paper, we propose a novel defects inspection algorithm for TFT-LCD panels. We first compensate the distorted image caused by the camera distortion and the uneven illumination environment using the least squares method and the bezier surface. We find a starting point of each pattern. The reference frame, made by subtract method using several clean patterns, is compared to each pattern to find defects. The simulation example shows that our algorithm not only inspects the defects well, but also is robust to the 1-pixel error.

  • PDF

강섬유보강 철근콘크리트 보의 휨성능 평가 (Evaluation of Flexural Performance of Steel Fiber Reinforced Concrete Beams)

  • 하기주;신종학;주정준
    • 한국구조물진단유지관리공학회 논문집
    • /
    • 제4권1호
    • /
    • pp.139-145
    • /
    • 2000
  • In this experimental program specimens. designed by the test variables, such as percentage of steel fiber incorporated, were constructed and tested to evaluate the flexural performance of reinforced steel fiber concrete beams. Based on the test results reported in this study, the following conclusions are made. Comparing with the load-displacement relationship of standard specimen, specimen over 0.5% of steel fiber incorporated, could be improved significantly flexural performance, such as capacity, ductility, and crack pattern. As increasing in quantity of steel fiber incorporated(0.5%~2.0%), the flexural strength of each specimen was shown the enhancement of 13%~40% in comparision with the standard specimen BSS.

  • PDF

소 브루셀라병 동시 다두 발생 농장의 발생 요인 조사 (Investigation of occurrence factors on brucellosis-outbreak farm in Korea)

  • 김지연;강신석;허문;이기찬;성소라;구정희;강성일;이향근;김유진;김동길;정석찬
    • 한국동물위생학회지
    • /
    • 제35권4호
    • /
    • pp.263-268
    • /
    • 2012
  • From the end of July 2012, several cases of abortion have been happened at the Korean indigenous cattle farm with 124 heads in Chungbuk province, Korea. Serological tests such as Rose-bengal test (RBT) and standard tube agglutination test (STAT) have been performed according to the standard official protocols of bovine brucellosis and 41 cattle turned out to be brucellosis-positive simultaneously. To find out the main factors of brucellosis outbreaks and spreads, additional serological, etiological and molecular investigation were applied. Totally, 11 B. abortus were isolated from 10 cattle's specimens including lymph-nodes and/or testis, and drinking water in cowhouse. In genotyping by multi-locus VNTR assay (MLVA) using 17 loci markers, the present B. abortus isolates were shown all the same pattern, D1 genotype, which has been reported in Gyeonggi and Gangwon province, Korea. These results suggest that the input of brucellosis might come from neighboring farms directly or indirectly, even if by unknown factor and expansion within farm would accelerate by materials related with aborting cows.

A Hardware-Based String Matching Using State Transition Compression for Deep Packet Inspection

  • Kim, HyunJin;Lee, Seung-Woo
    • ETRI Journal
    • /
    • 제35권1호
    • /
    • pp.154-157
    • /
    • 2013
  • This letter proposes a memory-based parallel string matching engine using the compressed state transitions. In the finite-state machines of each string matcher, the pointers for representing the existence of state transitions are compressed. In addition, the bit fields for storing state transitions can be shared. Therefore, the total memory requirement can be minimized by reducing the memory size for storing state transitions.

한복생산 분야의 국가직무능력표준 개발에 관한 연구 (The Study on NCS Development for the Production of Hanbok)

  • 서승희;김정숙
    • 복식
    • /
    • 제65권2호
    • /
    • pp.62-74
    • /
    • 2015
  • The purpose of this research is to analyse the process of development and verification of 'National Competency Standards' of Hanbok production, which was carried out in 2013 for the fashion industry. As the result of this research, the definition of the duty in Hanbok production is 'to conduct a series of step-by-step processes of planning and developing fabric and design, then making pattern, cutting fabric and sewing.' The competency unit for Hanbok production is analyzed in 10 categories: analysis of market trends, design plan, production and manipulation of fabric, production process plan, sample making, pattern making, cutting out, sewing, finishing sewing, inspection of the product quality. Competency unit elements of each competency unit are as follows. 1) analysis of market trends: to research market trend resources, to analyse consumers' buying trend, to analyse industry changes, 2) design plan: to develop design, to plan fabrication, to draw flats, 3) production and manipulation of fabric: to develop fabric planning, to prepare fabric manipulation, to conduct fabric manipulation, 4) production process plan: to grasp design, to plan sewing method, to prepare a specification sheet, 5) sample making: to make a sample pattern, to cut sample fabrics, to sew sample, to finish sample making, 6) pattern making: to measure body, to make production pattern, to adjust production pattern, 7) cutting out: to care fabrics, to lay out patterns, to cut out fabrics, 8) sewing: to sew a garment, to sew a lining, to attach a lining, 9) finishing sewing: to neaten edges, to attach trims, to press to finish, 10) inspection of the product quality: to confirm correspondence with the specification sheet, to inspect appearance.

가상 착의 시 고어드스커트의 패턴 제도 요인이 실루엣에 미치는 영향 (The Pattern Draft Factors Affecting the Silhouette of Gored Skirts in Virtual Clothing Simulation)

  • 최순희;김여숙
    • 한국지역사회생활과학회지
    • /
    • 제24권3호
    • /
    • pp.399-409
    • /
    • 2013
  • The purpose of this study is to compare how the number of panels, the amount of flare and the flare starting point affect the silhouette of the gored skirt. This study consisted of (1) creation of 3D body representations (2) comparison of silhouette between 3D virtual gored skirt and actual gored skirt by pilot experiment (3) pattern drafting of twenty-seven different gored skirts for 3D body representations (4) a computer simulation of twenty-seven different gored skirts for visualization and assessment (5) visual inspection of twenty-seven different 3D virtual gored skirts (6) comparison of ham shapes and measurements for the node and size analysis. A visual inspection of twenty-seven different 3D virtual gored skirts showed clear differences by the amount of flare and the flare starting point ; however, there was notably less difference in the width of ham among six-piece, eight-piece and ten-piece panels. This demonstrated that there was less influence on the number of panels than the amount of flare width of ham and extent of ham for the 3D virtual gored skirt.