Show simple item record

dc.contributor.authorBlatt, Joel H.
dc.contributor.authorCahall, Scott C.
dc.contributor.authorGilbert, Bernard R.
dc.contributor.authorHooker, Jeffery A.
dc.contributor.authorWallace, Gary L.
dc.date.accessioned2017-10-06T16:50:47Z
dc.date.available2017-10-06T16:50:47Z
dc.date.issued1993-05-28
dc.identifier.citationBlatt, J. H., Cahall, S. C., Gilbert, B., Hooker, J. A., & Wallace, G. L. (1993). Generation of surface shape from variable-resolution video moire contours. Paper presented at the Proceedings of SPIE - the International Society for Optical Engineering, , 1821 304-311.en_US
dc.identifier.urihttp://hdl.handle.net/11141/1790
dc.descriptionInterferometers, Optics, Surfaces, Video recordingen_US
dc.description.abstractSeveral methods for generation of three dimensional surface shapes from variable resolution video moire contours are described. In a classical moire system, a physical grating is projected on a target and also used to view the target. The moire contours are generated in the plane of the viewing grating. An unambiguous surface shape can then be computed by processing a set of moire images where the grating, target, or both are moved. By using an interferometer to generate and project variable pitch gratings and video technology to generate the moire contours, a 3-D surface can be scanned at different resolutions and used on a wide range of object sizes. The elimination of the physical grating also leads to surface generation techniques that do not use moving parts, increasing reliability. From these video moire contours, it is possible to uniquely reconstruct the 3-D surface, making the distinction between concave and convex surfaces. In one technique, a computer is used to mix digitized images of distorted gratings projected on the object with computer generated gratings, creating the moire patterns. By shifting one grating, it is possible to reconstruct the surface without having to move the object being scanned.en_US
dc.language.isoen_USen_US
dc.rightsThis published article is made available in accordance with publishers policy. It may be subject to U.S. copyright law.en_US
dc.rights.urihttp://spie.org/publications/journals/guidelines-for-authors#Terms_of_Useen_US
dc.titleGeneration of surface shape from variable-resolution video moire contoursen_US
dc.typeConference Proceedingen_US
dc.identifier.doi10.1117/12.145547


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record