Abstract
In this paper, a method for reconstructing three dimensional positions of macropores, using stereofilms by the image processor, has been improved.
Firstly, the errors occurring at soft X-ray radiographies and measurements of shade positions in a pair of stereo images were estimated, which illustrate that the effect of the movement of soil samples and the correctnsess of the conjugate pair of the macropores'shade on the height of macropores from the film surface are most dominant.Also, it was shown that the movement of soil samples on the moving unit has a deflection range of 0.02mm, which is lower than the resolution of the image processing device, which is 0.15 mm.
Secondly, a system was developed so that shade patterns on the left and right film can be recognized by the image processing device, conjugate pairs of the shade elements can be properly made, and the three dimensional coordinates can be calculated.Hence, it was ascertained that the system applied to the stereo films of pseudo-soil samples making wires macropores, can calculate the three dimensional data of the left and right shades.
Lastly, applications to real samples were explained, and the directions to develop the research were presented.
