CA2538162A1 - High speed multiple line three-dimensional digitization - Google Patents
High speed multiple line three-dimensional digitization Download PDFInfo
- Publication number
- CA2538162A1 CA2538162A1 CA002538162A CA2538162A CA2538162A1 CA 2538162 A1 CA2538162 A1 CA 2538162A1 CA 002538162 A CA002538162 A CA 002538162A CA 2538162 A CA2538162 A CA 2538162A CA 2538162 A1 CA2538162 A1 CA 2538162A1
- Authority
- CA
- Canada
- Prior art keywords
- distinguishable
- lines
- curvilinear lines
- curvilinear
- dental
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/25—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. one or more lines, moiré fringes on the object
- G01B11/2518—Projection by scanning of the object
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
- A61C9/006—Optical means or methods, e.g. scanning the teeth by a laser or light beam projecting one or more stripes or patterns on the teeth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Dentistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Optics & Photonics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Image Input (AREA)
Abstract
A system provides high-speed multiple line digitization for three-dimensional imaging of a physical object. A full frame of three-dimensional data may be acquired in the same order as the frame rate of a digital camera.
Claims (22)
1. A method for digitizing a physical object, comprising:
(a) projecting a plurality of sequential light patterns onto a surface of an object, where each of the plurality of sequential patterns includes a plurality of distinguishable curvilinear lines, where a first pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes at least the same number of lines than the first number of distinguishable curvilinear lines;
(b) capturing light reflected from the surface; and (c) determining coordinates x, y, z of points on the surface according to the captured light.
(a) projecting a plurality of sequential light patterns onto a surface of an object, where each of the plurality of sequential patterns includes a plurality of distinguishable curvilinear lines, where a first pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes at least the same number of lines than the first number of distinguishable curvilinear lines;
(b) capturing light reflected from the surface; and (c) determining coordinates x, y, z of points on the surface according to the captured light.
2. The method of claim 1 where the plurality of sequential patterns comprises white light.
3. The method of claim 1 where each of the plurality of distinguishable curvilinear lines is characterized by an intensity profile being substantially constant over time.
4. The method of claim 1 where step (a) further comprises generating a light pattern according to tracing a laser point with a two axis mirror to generate the plurality of distinguishable curvilinear lines.
5. The method of claim 4 where each of plurality of distinguishable curvilinear lines is characterized by a modulated intensity pattern.
6. The method of claim 1 where step (a) further comprises generating a light pattern according to tracing a laser point with a plurality of orthogonally mounted single axis mirrors to generate the plurality of distinguishable curvilinear lines.
7. The method of claim 1 further comprising optically generating the plurality of distinguishable curvilinear lines.
8. The method of claim 7 where each of the plurality of distinguishable curvilinear lines is characterized by a modulated intensity pattern and a scan speed.
9. The method of claim 8 where the scan speed and modulation are variable.
10. The method of claim 1 further comprising optically projecting multiple laser points through a plurality of optical elements to generate a plurality of static patterns of illuminated lines.
11. The method of claim 10 further comprising a single laser source to generate the plurality of distinguishable curvilinear lines.
12. The method of claim 11 further comprising producing the plurality of distinguishable curvilinear lines using a mechanical switch.
13. The method of claim 12 where the mechanical switch comprises a mirror.
14. The method of claim 13 where the plurality of distinguishable curvilinear lines are produced using an electro-optical switch.
15. The method of claim 14 where the electro-optical switch comprises an LC switch.
16. The method of claim 1 further comprising processing the coordinates in a computer system.
17. The method of claim 1 where the subsequent pattern includes a greater number of lines than the first number of distinguishable curvilinear lines.
18. (d) The method of claim 1 further comprising displaying the coordinates as a visual representation of the surface.
19. A dental imaging system, comprising:
(a) means for projecting a plurality of sequential patterns toward a dental item, each of the plurality of sequential patterns including a plurality of distinguishable curvilinear lines, where a first pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes a greater number of lines than the first number of distinguishable curvilinear lines;
(b) means for capturing light reflected from a surface of the dental item;
(c) means for determining data points associated with characteristics of the surface according to the captured light reflected from the surface; and (d) means for displaying the a three-dimensional representation of the surface of the dental item according to the data points.
(a) means for projecting a plurality of sequential patterns toward a dental item, each of the plurality of sequential patterns including a plurality of distinguishable curvilinear lines, where a first pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes a greater number of lines than the first number of distinguishable curvilinear lines;
(b) means for capturing light reflected from a surface of the dental item;
(c) means for determining data points associated with characteristics of the surface according to the captured light reflected from the surface; and (d) means for displaying the a three-dimensional representation of the surface of the dental item according to the data points.
20. A dental digitizing system, comprising:
(a) a projector configured to illuminate a dental object during each of sequence of exposure periods with a light patterns including a plurality of distinguishable curvilinear lines, where a first light pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes a greater number of distinguishable curvilinear lines than the first number of distinguishable curvilinear lines;
(b) a camera configured to capture an image according to light reflected during each exposure period;
(c) a controller configured to determine a set of points associated with characteristics of a surface of the object according to each image, and to compile each of the captured images to form an image of the object; and (d) a display for displaying the image of the object.
(a) a projector configured to illuminate a dental object during each of sequence of exposure periods with a light patterns including a plurality of distinguishable curvilinear lines, where a first light pattern includes a first number of distinguishable curvilinear lines, and a subsequent pattern includes a greater number of distinguishable curvilinear lines than the first number of distinguishable curvilinear lines;
(b) a camera configured to capture an image according to light reflected during each exposure period;
(c) a controller configured to determine a set of points associated with characteristics of a surface of the object according to each image, and to compile each of the captured images to form an image of the object; and (d) a display for displaying the image of the object.
21. The dental digitizing of claim 20 where the projector comprises a laser source configured to optically generate the plurality of distinguishable lines curvilinear lines from a single point laser source.
22. The dental digitizing of claim 20 where the projector comprises a plurality of laser sources configured to generate the plurality of distinguishable lines curvilinear lines.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50366603P | 2003-09-17 | 2003-09-17 | |
US60/503,666 | 2003-09-17 | ||
PCT/US2004/030453 WO2005027770A2 (en) | 2003-09-17 | 2004-09-17 | High speed multiple line three-dimensional digitization |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2538162A1 true CA2538162A1 (en) | 2005-03-31 |
CA2538162C CA2538162C (en) | 2010-02-02 |
Family
ID=34375379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002538162A Active CA2538162C (en) | 2003-09-17 | 2004-09-17 | High speed multiple line three-dimensional digitization |
Country Status (6)
Country | Link |
---|---|
US (1) | US7342668B2 (en) |
EP (1) | EP1663046A4 (en) |
JP (1) | JP4913597B2 (en) |
AU (1) | AU2004273957B2 (en) |
CA (1) | CA2538162C (en) |
WO (1) | WO2005027770A2 (en) |
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2004
- 2004-09-17 JP JP2006527048A patent/JP4913597B2/en active Active
- 2004-09-17 CA CA002538162A patent/CA2538162C/en active Active
- 2004-09-17 WO PCT/US2004/030453 patent/WO2005027770A2/en active Application Filing
- 2004-09-17 EP EP04784343A patent/EP1663046A4/en not_active Withdrawn
- 2004-09-17 US US10/943,273 patent/US7342668B2/en active Active
- 2004-09-17 AU AU2004273957A patent/AU2004273957B2/en active Active
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AU2004273957B2 (en) | 2009-05-28 |
US20050099638A1 (en) | 2005-05-12 |
CA2538162C (en) | 2010-02-02 |
JP2007521491A (en) | 2007-08-02 |
EP1663046A4 (en) | 2011-10-05 |
US7342668B2 (en) | 2008-03-11 |
AU2004273957A1 (en) | 2005-03-31 |
WO2005027770A2 (en) | 2005-03-31 |
WO2005027770A3 (en) | 2008-04-03 |
JP4913597B2 (en) | 2012-04-11 |
EP1663046A2 (en) | 2006-06-07 |
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