赤外線映像装置で測定したコンクリート表面温度分布に含まれるノイズのウェーブレット変換による除去(機械力学,計測,自動制御)

概要

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Infrared thermography has recently been utilized to detect faults in the concrete structures. It is, however, not easy to judge the internal conditions of concrete because the distribution of temperatures on the surface of the concrete structure contains some kinds of noises which derive from complexity of concrete, uneven surface and dirt. So, the method to remove the noises from the temperature distribution is discussed in this report. The method consists of three steps. The first step is to calculate the two dimensional wavelet transform of the temperature distribution. The second step is to remove the small components of the above wavelet transform. The third step is to calculate the two dimensional inverse wavelet transform of the remaining components of it. The corrected temperature distribution which is obtained thus shows the faults more clearly.
2005-05-25