laser webcam turntable low cost 3d scanner costs: laser………….100euro webcam………100euro...
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![Page 1: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/1.jpg)
![Page 2: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/2.jpg)
Laser
WebcamTurntable
Low cost 3D scanner
Costs:
• Laser………….100euro
• Webcam………100euro
• Turntable……...150euro
Side viewTop view
Object
• In order to perform triangulation (line-plane intersection) all the devices must be calirated.
![Page 3: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/3.jpg)
• 3D handmade grid cube with known 3D position
The detected points are the measurements
• Camera Calibration
Detected laser line with known world position.
• Laser plane calibration
• Laser with cylindrical lens.
• Subpixel peak detector
• Laser plane orientation is finally computed.
I Wx PxIx
Wx
![Page 4: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/4.jpg)
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• Turntable calibration (time)
• Turntable calibration (space)
• Point detector
• Ellipse detection
• Ellipse fitting
• Imaged center
Assumption:
• Uniform Sampling
• Low jitter
• Constant velocity
Frame Number
SSD
SSD (summed squared difference) all frames wrt the first .
![Page 5: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/5.jpg)
• Recontruction by Triangulation.
• We use the DirectShow API to acquire the video sequence. 320x240pixel 30fps
• And OpenCV for basic image processing.
• Point cloud
• Triangulated mesh
![Page 6: Laser Webcam Turntable Low cost 3D scanner Costs: Laser………….100euro Webcam………100euro Turntable……...150euro Side view Top view Object In order to perform](https://reader030.vdocuments.mx/reader030/viewer/2022032723/56649d0c5503460f949e0d26/html5/thumbnails/6.jpg)
• Point cloud • Triangulated mesh
• Application: Orthopaedic Shoemaking Ortopedia Fiorentina (Firenze).