The purpose of this work is to develop a technique for standard quantitative soil structural assessment using horizontal image analysis. The SOLICON (Moran et al., l 989a) soil structure evaluation system has been developed further to enable horizontal soil sections to be analysed and classified. Using this new system, SOLICON 2, images of soil collected from the field can be measured and classified in relation to a library of structures. This computer aided system involves the collection, processing, analysis and classification of images that represent the field condition of the soil pore structure in specific horizons.