| 摘要 |
<p>PURPOSE:To accurately and automatically detect the particle size and the particle size distribution of Zoogloea flocs, by judging an observed picture element as a picture element corresponding to a non-fibriform microorganism when the brightness level of the observed picture element is the one other than a set width. CONSTITUTION:When a definite amount of a liquid to be examined containing activated sludge is collected on a preparation and microscopically examined in the bright field of an optical microscope 2, an original image having contrast can be fabricated. In the original image, a dark part is present in a liquid phase part B being a bright background and is floc part Z and a fibriform microorganism part F. Image information obtained by a vidicon camera 3 is processed by an image information processing apparatus 9 and only the image of a Zooglea microorganism (floc) is displayed by CRT8. A brightness information processing circuit 4 performs the A/D conversion of the brightness information from the vidicon camera 3 into a digital signal.</p> |
