Tooth measurement without calbration bodies

Details Tooth measurement without calbration bodies Tooth measurement without calbration bodies

1993-08-18

1997-02-18

Boudreau, Leo H.

Image analysis

Applications

Personnel identification

348 66, 356376, 364560, 433215, 382154, 382284, G06K 900

Patent

active

056048173

ABSTRACT:
A method for the optical three dimensional measurement of a tooth without calibration bodies. An optical projection system projects a pattern onto a tooth, and an optical imaging system images the pattern projected thereon, from a first position in space and subsequently from a second position in space, with the images from the two positions in space having a common imaged area of the tooth. The image patterns are evaluated to calculate three dimensional coordinate data of the tooth surface relative to the respective imaging position for each image and also for the two images combined, to produce a single three dimensional tooth surface data record. In this method, points and/or surfaces are selected from the common imaged area with the aid of properties of the tooth surface contour which are invariant under displacement and rotation, so that they can be clearly correlated with each other. The change in position between the first and second positions in space is determined with the aid of the selected points and/or surfaces and their relative coordinate data.

REFERENCES:
patent: 4575805 (1986-03-01), Moermann et al.
patent: 5339154 (1994-08-01), Gassler et al.
patent: 5369490 (1994-11-01), Kawai et al.
patent: 5372502 (1994-12-01), Massen et al.

Affiliated with

Also associated with

Rating

Tooth measurement without calbration bodies does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tooth measurement without calbration bodies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tooth measurement without calbration bodies will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1607973