Abstract
This study argues a development and a proposal of "graphical presentation" of the distribution of solid angle ratio and its semantic components of faces that compose the hierarchical structure of the scene of architecture. As Gibson asserts, this kind of the structure of the informations are considered to play an important role in human functioning of perception. The target of the study are 2 images of the exteriors of single buildings taken by 35mm perspective control lens and 2 images of the exteriors of multiple dwelling houses taken by the 180° lens for projection in solid angles. Each faces of the region segmented images were divided into 5 to 7 layers depending on the depth of the hierarchy of the nested structures. Solid angle ratio [%] is defined as the ratio of each segmented region compared with a free setting region on the whole globe. The codes of identity, structure and meaning are defined as solid angle ratios of faces, inter-relational components between faces and English titles of faces. The author calculated with a computer to draw trees that indicate the nested structures among those faces. The series of tree drawings shows that detailed solid angle ratios and nested structures belong to the factors which determine the scene of architecture that cannot be explained only by the solid angles of sky, building and ground. The visual images that we are felt in the environment are not only by the identity or the structure as morphological informations, but also by the semantic informations that have depth in the hierarchy.
