Affiliations: Department of Mechanical Engineering, Aoyama Gakuin
University (Presently ISAS), 5-10-1 Kobuchi, Sagamihara, Kanagawa, 229-8558,
Japan. E-mail: fujimatu@me.aoyama.ac.jp | Department of Computational Science and Engineering,
Toyo University, 2100 Kujirai, Kawagoe-shi, Saitama 350-8585, Japan. E-mail:
tamtam@eng.toyo.ac.jp | Institute of Space and Astronautical Science, Japan
Aerospace Exploration Agency, 3-1-1 Yoshinodai, Sagamihara-shi, Kanagawa
229-8510, Japan. E-mail: fujii@flab.eng.isas.jaxa.jp
Abstract: Image processing procedures for noise reduction and image
registration in the Pressure Sensitive Paint (PSP) experiments are
investigated. A several types of filter are examined for the removal of shot
noise. An algorithm to detect a marker cell located on the model surface is
proposed and an appropriate marker size is discussed. The digital processing
based on the wavelet transform is effective to reduce the shot noise and to
enhance the edge of the model. The algorithm to sharpen the edge of the model
using wavelet transforms is developed. The results indicate that the methods
developed in this study effectively remove the shot noise and correct the
displacement of the model on the images taken during the wind-on.
