3D-Laserscanner
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Back	As a friend built up his own self made milling machine I developed the idea of a own 3d-laserscanner for the redesign of different useful and useless things. Meanwhile the second hardware setup is finished working successfully. It is now built up in a modular design allowing modifications in a simple way. Most of the electric components are commercially availlable. The software package is completely intergrated as single java plugins into the ImageJ imaging software. I developed plugins for the complete scanning process chain like calibration, image grabbing and 3d calculation.
	Hardware-Features: PC-contolled rotation of laser and camera high precission mounting of laser and camera modular design based on a aluminium profile USB stepper control USB laser control USB-Webcam Software-Features: Java-based software-plugins image-capturing with preview for the setup calibration selective threshold plugin for the simple and accurate processing of calibration images plugin for the calculation of the camera chip size saving of images as TiFF-Stack including setup values as Meta-data analysis plugin with automatic reading of Meta-data plugin for scanline skeletonisation based on spacetime analysis XYZ-output in different formats Plugins Capture Funktion: Capturing of calibration images and saving as stack. With the following plugin the images can be prepared for the determination of the chip size or for the determination of the intrinsic camera parameters. ROI Threshold Funktion: Cutting ROIs, thresholding of ROI-region and copying of black Pixels of ROI into target image Chip Geometry Funktion: Calculation of camera chip size. Optic Calib Funktion: Determination of the intrinsic camera parameters with the calibration tool from Zhang. Undistort Image Funktion: Undistortion of images with the camera specific intrinsic parameters calculated with the Zhang calibration method. Scan_Calculator Funktion: Calculation of the 3D-data from the scan lines in the 2D-Images. Different Skeletonizations are available (Gauss, Fourier, Spacetime, ...). Also the Undistort function is included. Scan_Calculator_linear Funktion: Like Scan_Calculator but for a different scanner design. Laser and Camera are fixed to each other and will be moved linear to the object. Linear_Base_Calibration NEW 12/2012 Funktion: Optical measurement of the distance between the laser and the camera focal point with a special calibration specimen of known dimension. Scan_Capturing_public Funktion: Capturing Plugin controlling of the Laserscanner and capturing of scanning images. The defined parameters are saved in the image metadata and can be read in by the Scan_Calculator plugin. Because of my limited sparetime I can not give any detailed informations about the hardware setup and wiring of the electric components. If there are more than 50 interessted I will discusse with some friends about the production and the distribution of a limited edition of the aluminium and plastic parts, stepper, bearings and base profile. If so I will also edit a detailed description of the wiring (which must still be DIY). Installation Infos JMF Java Media Framework Funktion: JMF is Java add-on which extend Java with different media in/output functionalities e.g. webcam and video handling.