| 摘要 |
<P>PROBLEM TO BE SOLVED: To observe a surface state with high precision using a simple and low-cost structure. <P>SOLUTION: An apparatus for observing a surface state comprises: spectral image generating sections 32; gray scale processing sections 33; and wavelength difference calculating sections 41. Each spectral image generating section 32 generates a spectral image by performing correlation operation for an input captured image using each of at least three or more band-pass filters 5 including a solid image having a color code corresponding to spectral characteristics of a different predetermined wavelength. Each gray scale processing section 33 converts the spectral image generated by the spectral image generating section 32 into a gray-scale image. Each wavelength difference calculating section 41 takes a difference of luminance of the gray-scale image converted by the gray scale processing section 33 between adjacent wavelengths to generate a difference image. <P>COPYRIGHT: (C)2012,JPO&INPIT |
