METHOD ON SPACIAL EVALUATION OF TOWNSCAPE IN A TRADITIONAL STREET BY USE OF A NEW CONCEPT OF VECTOR VISION/SCALAR VISION

Abstract

The unity and continuity of the townscape have been lost up to date on the streets in local cities. The objective of this paper is to propose indices on evaluating those type of townscape and to confirm those application to a real townscape. Indices, scalar and vector vision indices, based on the concept of the scalar and vector illuminances to indicate diffuse and directional effects were derived. Each vision index is defined as the solid angle projection factor of content elements in the street. Chikara-machi-street which consisted of mixed landscape of modern and traditional buildings was selected to examine the indices and to evaluate the characteristics of the street. The ratio of vector to scalar vision was also defined as a combined index. It was confirmed that the scalar vision index corresponded to unconscious vision and the vector vision index did to conscious grazing, respectively.