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The markets of Industrial Quality Assurance and Manufacturing Automation are more and more demanding technologies and systems for true 3D measurement. The accurate calibration of such systems is key for their performance. Several calibrated 3D devices are available on the market, however, they are coming with various limitations. Either the required size and shape of the Field of View (FOV) is not available, or several devices need to be combined into a single coordinate system requiring laborious calibration.

Since 2005, AQSense is the leading provider of 3D imaging algorithms. The brand new version of its software library SAL3D presents new tools for metric calibration, like the static zigzag calibration, specially designed for FOVs where the width is quite large compared to the height. The Multiple Zigzag Calibration is able to cover large areas by placing the 3D reference pattern in different positions. Alternatively, users can print out the provided chessboard calibration pattern themselves.

In addition, the Geometric module contains tools to help on combining two (or more) factory calibrated 3D devices. The principle of this tool is to identify 3 (or more) common points between different devices. For that, also Sphere Fitting is a widely used concept in metrology, as the center of a sphere is a good reference for calibration. Another important new tool is the Mesh Import, that allows to create Clouds of Points (COPs) from meshes to use them as reference model in the Match3D tool.

Find out more about all new features at http://www.aqsense.com/docs/docu/release_notes.html

Furthermore, during system installation it is important to have enough feedback for a more accurate adjustment of camera, lens and laser parameters. The new version of 3DExpress, AQSense’s software application with intuitive GUI and API for fast system development, features the new „Keep Frames“.

It allows for checking all 2D images acquired by the camera after one 3D scan. Based on the analysis of these images, the user is able to adjust the acquisition set-up and also discover sources of noise and reflections. Other improvements are related to the calibration, not only by offering more calibration methods, but also with a graphical view of the metric calibration errors.

Please see the release notes on the new 3DExpress version at http://www.aqsense.com/docs/docu_3dexpress/release_notes.html

Find out what SAL3D and 3DExpress can do for your manufacturing automation, in order to get high precision feedback control and quality assurance to your plant. Correction in early production stages allow for higher productivity, fewer outages, saved time, and thus benefit plant efficiency as well as product quality.

Released a new version of both SAL3D and 3DExpress.

Download the latest version from the dowload area.

Main SAL3D updates

New functionalities:

  • Add calibration from a chessboard placed on the laser plane
  • Add chessprint tool to aid in chessboard pattern design
  • Add COP triangles filtering functionality
  • New zigzag metric calibration, also with multiple-zigzag pictures
  • New Mesh Import tool, similar to CAD Import, to create COPs from gold meshes in multiple formats
  • New Geometric functions to align point triplets

Improvements:

  • Multiple additions and improvements to .NET
  • Fix issue in robust tangent plane computation
  • Improve chessboard lens calibration
  • Improve the pattern detection for the linear calibration
  • Allow export/import lens distortion models as met files in the examples
  • Adding new 'restart' and 'end' parameters to file.fgd
  • Increase COP size limit for cad2cop
  • Add imagemanager fgd driver
  • pleora.fgd: support for eBUS 3.1 and 4, and removing dependency on Photonfocus libraries
  • Faster peakfinder-horizontal, specially in i7 with AVX2
  • Fixes in the multiple camera synchronisation
  • Improved accuracy in Lens Calibration through dots pattern

Full release notes here

Main 3DExpress updates

New functionalities:

  • New zigzag metric calibration
  • Add option to compare calibrated to ideal pattern
  • Easier usage of Pleora GigE and Point Grey with new configuration dialogs
  • COP filters. Example filter to crop bounding box, provided.

Improvements:

  • Improve chessboard lens calibration
  • Improve the pattern detection for the linear calibration
  • Improved menus for KeepFrames, added a viewer for the frames kept, and faster storage to disk.
  • Fixed a drop of acquired profiles if some options were changed during a live acquisition.
  • Fixes for the standalone dotnet interface
  • pleora.fgd: support for eBUS 3.1 and 4, and removing dependency on Photonfocus libraries
  • Fixed extra-frames in 16-bit
  • Faster peakfinder-horizontal, specially in i7 with AVX2
  • Fixes in waitgroup

Full release notes here

We have recently released a new version of 3DMVL in both 32 adn 64 bits.

This new version is based on recent SAL3D library, so, it was significant improvements on metric calibration and match3D alignment. It also has new VIs for COP filtering.

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3DMVL is available on the downloads area

From the hand of Cylod, one of the AQSENSE's Korean distributor, AQSENSE tools are going to be introduced at the Automation World 2014 show, that will take place in at COEX SEOUL, March 4 to 7 (booth #O120)

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The cover story of Vision System Design April 2016 shows one 3DExpress application done by one of our customers.

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Robomotive robot

Take a system integrator like Beltech and a distributor like Phaer toghether with Photonfocus cameras, Z-Laser lasers, BitFlow framegrabbers and AQSENSE's 3D technologies. The result: a bin picking robot, from the company Robomotive, able to handle a large diversity of products in small numbers.

A robot with one pair of eyes, two arms and two hands, that effortlessly assembles a wheel at the same speed and with the same accuracy as a human would. This is the product that Robomotive is currently scoring very well with, whilst making its imprint on the future. A success story that system integrator Beltech and vision component supplier Phaer were only happy to co-write.

The robot of the future that can see

Michael Vermeer has already been bringing traditional, industrial robots to the market for many years. The General Manager of Robomotive says: "Until now, robots always carried out the same repetitive work, which is why we feel it is time to move one step forward and let robots handle a large diversity of products in small numbers. For this task, robots need eyes so that they can see what they are doing. This sight is made possible with 3D vision, an application that is becoming increasingly important in our sector, contributing to a more positive image of robots. No longer are they dirty, dumb and dangerous. They are now flexible, adaptive and intelligent. We involved system integrator Beltech for the vision hardware and software."

Front view of the Robomotive robot

Product-specific grippers, jigs and feeders are expensive. To provide a good return on investment, the robot needed to use adaptive grippers and therefore be able to adapt to changes in the handled parts. With Robomotive solution, programs could be easily loaded depending on the product and task to be performed.

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Full article at Inspect magazine online Opens in new window

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