The Paper's Abstract
of The 3rd
International Conference on Imaging Science and Hardcopy
Differentiation of Pores from Minerals in Soils Using Optical Microscopy (Invited)
May
26-29,1998
Chongqing China
Xiaohong
Bai, Hongnan Ng and Peter Smart
Department
of Civil Engineering
Tel: (+44)141-330-4074, Fax: (+44)141-330-4557
The paper reports the development of an algorithm to differentiate pores from minerals in thin sections of soil. Most soils are porous aggregates of mineral particles. Thin sections of resin-impregnated samples are used when analyzing the micro structure. Classification and measurement of the pores is an important part of this analysis. Many workers have resorted to staining the resin in order to differentiate the pores; but this staining is sometimes undesirable, and satisfactory differentiation of the pores in unstained sections has been achieved by comparing images taken respectively in plane- and circularly-polarized light. Five versions of the algorithm gave been compared; in particular, computation before thresholding seemed better than thresholding before computation. The known limitations of the method are indicated.
中国复印科学与工程学会
Reprographic Scientists and
Engineers Society of China
7 Chang-Tu Rd.Tianjin300131,China Tel:(22)26669189 Fax: (22)26669189
E-mail: rsesc@public.tpt.tj.cn
.