抄録
Full color image processing technique was applied to the measurement of degree of degradation of a roof material. Utilizing a three dimensional geometric algorithm in a RGB color space, a corroded portion could be analyzed ignoring the effect of shadows of the structure. The results of the present method correspond to the results using rating number by manual procedure. It is possible to make an automatic process for evaluation of roof materials. It id also possible to make a remote sensing process in the sky, combining a technique to take aerial photographs.
