• Title/Summary/Keyword: Accuracy improvement

Search Result 2,382, Processing Time 0.035 seconds

Improvement of control law for response charaoteristics of a variable structure control system (가변구조제어계의 응답특성향상을 위한 제어법칙의 개선)

  • 김중완;이만형
    • 제어로봇시스템학회:학술대회논문집
    • /
    • 1989.10a
    • /
    • pp.508-512
    • /
    • 1989

  • A new control law of a VSCS is illustrated and put into an analytical form. Using the presented control law, a VSCS shows smooth response, low control input and high accuracy in comparison with those by typical control law.

  • PDF

A study for Improvement the Accuracy of Tree Species Classification within Various Sizes of Training Sample Areas by Using the High-resolution Images (고해상도 영상을 이용한 샘플영역의 크기별 수종분류 정확도 향상을 위한 연구)

  • Hou, Jin Sung;Yang, Keum Chul
    • Journal of Wetlands Research
    • /
    • v.16 no.3
    • /
    • pp.393-401
    • /
    • 2014

  • The purpose of this study was to investigate the objective impact in accuracy and reliability with tendency depend on training samples by using the high-resolution images. Supervised classification was performed based on multi-spectral images which made by each satellite and aerial images for considering all of bands' characteristics. The highest accuracy was 84.7% with satellite image(3*3) and 83% with aerial image(5*5) at the accuracy verification phase. Also, the overall accuracy with the consideration of Kappa coefficient were 0.84 for satellite images and 0.82 for aerial images. In all of the images, the smaller training sample was, the higher accuracy showed. Therefore, tree species classification accuracy was tended to rely on training sample size.

  • https://doi.org/10.17663/JWR.2014.16.3.393 인용 PDF KSCI