| PHOTOMETRIC STEREO ASSISTED DRAWING OF ARCHITECTURAL RELIEFS |
| Paper ID : 1047-SMPR |
| Authors: |
|
ali abzal *1, Mohammad Sadat seresht2, Masood Varshosaz3 1School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran; 2School of Surveying and Geospatial Engineering, College of Engineering, University of Tehran, Tehran, Iran; ali.abzal@ut.ac.ir 3Geomatics Engineering College, K. N. Toosi University of Technology, Tehran, Iran, |
| Abstract: |
| Geometric documentation is one of the most important parts of a documentary report. Despite the advances made in the field of line drawing of ancient relief surfaces, in most cases, human operator interaction is unavoidable. In this paper, an algorithm for the automatic line drawing of relief surfaces has been developed. In the proposed method, photometric stereo normals are used as a high-resolution and low-noise data for the automatic extraction of surface edges. The normals are computed in 2D image space and also the fringe projection scanner is used for geometric correction of 2D image based drawings. Therefore, the drawings are converted to a metric map for geometric documentation reports. The results show that the efficiency of the proposed method, which has managed to correctly draw 99.1% of the edge lines of an ancient relief. Also all of the drawn lines are completely coincided to the relief edges on its orthophoto image. |
| Keywords: |
| Line Drawing, Geometric Documentation, Photometric Stereo, Fringe Projection |
| Status : Conditional Accept (Oral Presentation) |
