raspberry pi 3d coin scanner
why a 3d coin scanner? i’ve always been fascinated with coins. the images on coins are often very intricate and the metallic shine makes especially unused coins very beautiful. coin faces are sort of 3d objects compressed into an almost 2d representation with little loss of perceived depth (the coin design process might actually most […]
3d coin scanner
objective build a cheap 3d scanner to scan small objects, such as coins, at a very high resolution. scanning principle the scanner projects light onto the surface of an object such that it is partially illuminated. the transition from bright to dark is analyzed and a 3d section of the object is reconstructed via triangulation […]
3d scanner #4
this 3d laser scanner is the most complete system i have built so far. it features a calibration system that is used to calibrate the camera as well as the position of the laser relative to the camera. the main components of the system are: line laser with drive usb webcam calibration object control software […]
3d scanner #3
it seemed interesting to scan an object not just from one side but all around in one pass. a rotating table on which the object can be placed would do just fine. other than that this scanner is very similar to the 3d scanner #2. in order to improve capturing of dark surfaces i built […]
3d scanner #2
my first 3d laser scanner was a proof of concept device. therefore it’s a relatively simple setup with a usb camera, a stepper motor controller, a stepper motor on which a line laser is mounted and a simple program to run the system. camera distortions are partially corrected but the system is not calibrated as […]
3d scanner #1
my first 3d scanner is a touch probe scanner that scans very accurately at a very high resolution along each axis. the scanner works very slowly since the probe has to be moved into contact with the object at every point on the xy-coordinate grid. some of the results can be seen in the following […]