한국가시화정보학회:학술대회논문집

한국가시화정보학회 (The Korean Society of Visualization)
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Sub-pixel image interpolations for PIV

  • Kim Byoung Jae (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Sung Hyung Jin (Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 발행 : 2004.12.01
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초록

Several interpolations for image deformation in PIV were evaluated. The tested interpolation methods are linear, quadratic, truncated sinc, windowed sinc, cubic, Lagrange, Gaussian $2^{nd}\;and\;6^{th}$ interpolators. Bias errors and random errors were evaluated in the range of $0\~3.0$ pixel uniform displacement using synthetic images. We also measured the time cost of each interpolator with respect to kernel size. The cubic interpolator with $6\times6$ kernel showed the best results in terms of the performance and time cost.

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