David laser scanner
| DAVID LASER SCANNER
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| Basic data
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| Current version | 2.5.5 (June 2010) |
| operating system | Windows |
| category | Laser scanning , computer-aided design |
| License | Freeware |
| German speaking | Yes |
| http://www.david-laserscanner.com/ | |
The David laser scanner is a software package with which laser scanning can be operated without special hardware, i.e. three-dimensional models of objects can be recorded. In addition to the software and a Windows PC, only a line laser and a webcam are required.
function
Calibration is required before the actual scanning process . To do this, print out measuring points are applied to two plates at right angles to one another, which are then recorded by the webcam. Due to the known position of the measuring points in space, a bijective function between the pixel coordinates of the camera and 3D points on the surface of the calibration object is obtained. In addition, the program is adjusted to the lighting conditions.
During the actual scanning process, the object to be recorded is placed between the two calibration surfaces and scanned free-hand with the laser line. The line is captured by the camera, simultaneously on both calibration surfaces and on the scanned object. With the help of the previously obtained function, the position of the laser in space can now be determined for each individual image and thus also the position of the points illuminated by the laser on the surface of the scanned object.
The 3D data is displayed immediately on the monitor . The scan can continue until the density of the data obtained is satisfactory. The generated 3D model can be exported in various file formats and further processed with any CAD and 3D programs.
development
The development of the David laser scanner began in September 2006 by Simon Winkelbach and Sven Molkenstruck, research assistants at the Institute for Robotics and Process Informatics at the TU Braunschweig . The concept was published as a scientific publication and in September 2006 won the DAGM main prize from the German Association for Pattern Recognition .
literature
- ↑ Simon Winkelbach, Sven Molkenstruck, and Friedrich M. Wahl, Low-Cost Laser Range Scanner and Fast Surface Registration Approach (PDF; 523 kB) , Pattern Recognition (DAGM 2006), Lecture Notes in Computer Science 4174, ISBN 3-540- 44412-2 , Springer 2006, pp. 718-728. 2006.
- ↑ List of all award winners of the German Association for Pattern Recognition (DAGM) since 1984 dagm.de ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
Web links
- David laser scanner website , with forum and wiki
- Concept paper (English; PDF file; 510 kB)