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Ancient Sri Lankan documents inscribed on stone surface are usually contaminated with various kinds of noises such as scratches, cracks, voids, etc. In authors' previous paper, ideal shape of Brahmi letters has been studied by a digital method and some alphabet fonts of early Brahmi scripts have been created from the analysis of a lot of photographic data of ancient Sri Lankan inscriptions of the same period in the history. The present paper deals with a precise method of identification of ancient letters with the aid of the alphabet fonts, which leads to automatic reading of ancient inscriptions by computers.

Monitoring of inclination of land is important to prevent damage from landslide. Low cost and stable system is necessary for this purpose. This paper presents a new inclination measurement system and its application to sensor network of disaster prevention. Our system has a bull's eye level, a digital camera and wireless module. The angle and direction of inclination is measured from the photo of bull's eye level. The achieved resolution was 0.0053degree/pixel using a bull's eye level with a curvature radius of 800 mm. Measurement data was compared with the data from commercial inclinometer.