A Method for Architextural Drawings Using Linear Density Features

Abstract

The contour line that traces the shape and scale of the excavated remains that the investigator (archaeologist) actually measured in the field is called architectural drawings, and a method of automatically drawing this is being sought. However,when the conventional edge extraction method is applied to the ortho image (RGB image) obtained from the remains, there is a problem that it is difficult to extract the upper and the lower edge lines of the remains with different heights. To solve this problem, in this study, we pay attention to the linear density features obtained by applying the Canny method to the depth image of the remains, and propose a method to extract the upper and lower edges of the remains by quantitatively expressing the density. The effectiveness of the proposed method is verified by showing an example of applying the proposed method to actual remains data.