Fiducial point localization in multisensor 3D surface scanning

Gulab H. Bhatia; Arjun Godhwani; Michael W. Vannier M.D.

doi:10.1117/12.59567

26 June 1992 Fiducial point localization in multisensor 3-D surface scanning

Gulab H. Bhatia, Arjun Godhwani, Michael W. Vannier M.D.

Proceedings Volume 1660, Biomedical Image Processing and Three-Dimensional Microscopy; (1992) https://doi.org/10.1117/12.59567
Event: SPIE/IS&T 1992 Symposium on Electronic Imaging: Science and Technology, 1992, San Jose, CA, United States

Abstract

The estimation of fiducial point locations on surfaces is important in many close range photogrammetric applications, including biostereometrics, non-contact stress analysis, industrial metrology, and others. We have developed various methods for estimation of surface fiducial points based on optically sensed range maps obtained with a multisensor 3-D scanner originally designed for portrait sculpture. We previously described an algorithm based on a Kalman filter, a recursive spatially variant optimal estimator. The results demonstrated that accurate localization of surface landmarks can be readily achieved. Two new methods for estimation of fiducial point locations on surfaces were devised for the 3-D scanner. This high- speed non-contact 3-D scanner uses 6 CID cameras and 6 pattern projectors. Each projector incorporates coded bar patterns which are projected onto the object to be scanned. These patterns are captured in the camera image, mensurated, and tagged to identify corresponding projector profiles for each profile observed in the camera. The set of points belonging to a profile on the image plane are entered into a 2-D to 3-D solution, an analytical procedure where each image point (2-D point) is mapped to a point in space (3-D point). Three- dimensional surface points from all views are resampled onto a global cylindrical grid. Both range and texture maps are computed and stored. The range and texture information from all views is averaged and displayed on a 3-D graphics workstation (Silicon Graphics 4-D/340). Fiducial point localization achieved via the two new methods employing variations of Kalman filtering.

Citation Download Citation

Gulab H. Bhatia, Arjun Godhwani, and Michael W. Vannier M.D. "Fiducial point localization in multisensor 3-D surface scanning", Proc. SPIE 1660, Biomedical Image Processing and Three-Dimensional Microscopy, (26 June 1992); https://doi.org/10.1117/12.59567

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
12 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

3D image processing

Cameras

Image segmentation

3D scanning

Biological research

3D metrology

Biomedical optics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years