Reversed Solid Modeling by Shading

• Main Authors: Jin-Sheng Jaw, 趙金生
• Other Authors: Da-Pan Chen
• Format: Others
• Language: zh-TW
• Published: 2003
• Online Access: http://ndltd.ncl.edu.tw/handle/93229694825161631027

碩士 === 國立交通大學 === 機械工程系 === 91 === In this thesis, we reconstructed solid models from gray-level shading images. Two algorithms are implemented and compared. In the first algorithm, an iterative method is applied with brightness constraint and smoothness constraint using intensity information of a single image, and occluding boundary is supplied as boundary condition. In the second algorithm, the surface orientation of an object is determined by photometric stereo method which uses 3 point-light-source as illumination sources, and then the solid model is rebuild. We used a fourth light source to solve the problem of the overlapped shadow area. After experiments, these two methods all show their capabilities in producing sound results. This research proved that it is feasible to rebuild solid models from their corresponding two-dimensional shading images.