Aqsense 3D Express: 3D imaging made exceedingly simple
27 Jun 2012
Today, 2.5D technology is used for most 3D applications in machine vision. The real 3D tools offered by Aqsense for the Common Vision Blox Image Processing Library are still an exception and as a rule these tools are provided as a library that require programming, such as CVB.
Until now there has been no sensible way of linking 3D tools using a graphical user interface, and all too often the existing display tools are over burdened with 16 bit range maps, which means either additional pre-processing is required or limitations in the functionality are found. This results in the user only obtaining a usable 3D image after performing many intermediate steps or having to rely on their own pre-processing.
Aqsense performs all the necessary steps such as image recording, pre- processing, calibration, manipulation of the 3D data point clouds and generation of an 8 bit range map (height image) which can then be processed using the Teledyne DALSA 2D Sherlock user interface - without requiring a single line of programming code. The image sources and image outputs are easy to adjust via a user interface and a separate setup window is provided for each step, plus a corresponding control window with image display.
3D Express is based on the proven CVB Image Manager for image recording and can therefore be output directly from the Automation Technology triangulation cameras which are also distributed via STEMMER IMAGING. As an alternative, other fast GigE camera models such as the DALSA Genie can be used for triangulation in a 2D mode. Then 3D Express and its integrated PEAK tool generates the height image from the laser line.
Using a suitable calibration object the recorded images can then be metrically calibrated immediately. The user can rotate the recorded and calibrated data point cloud freely in space via the integrated ZMap and project it in an appropriate range map in the desired position. These rotations are important, for example, to inspect the roundness of circular bores which cannot be aligned horizontally for recording.In addition, the user can define which cutout of the 16 bit height data is to be calculated for the 8 bit result range map for the graphic user surface.
The Aqsense software is completely transparent in DALSA Sherlock, behaving like a normal camera. The 8 bit range map of 3D Express can therefore be recorded quite normally via the camera interface. Even the live image appears as though it comes from the camera. Any further processing can then be performed in a 2D environment.
The Spanish company Aqsense develops software for 3D image acquisition and processing technologies for high speed, in line, 100% production control in image processing.
Bad Oldesloe, Germany
Automation Technology or AT for short, was founded in 1998 and is located in Bad Oldesloe, Germany. The company manufactures 3D cameras and sensors for fast three dimensional measurements based on the sheet-of-light triangulation principle.
Teledyne DALSA is one of the largest companies serving the machine vision industry and is unique in that it is vertically integrated; from sensor design and manufacture, through image capture and processing, to software for imaging optimisations and analysis.
- Advanced, yet simple application development software for rapid solutions
- High inspection speeds with excellent flexibility
- For inspection, measurement and 100% monitoring
- Laser scanning sensors with very fast measurement speeds and high resolutions
- 3D imaging using the laser scanning triangulation method
- Smart camera architecture