Andrew Wilson, editor of Vision Systems Design, collects in a single article the most relevant novelties of VISION 2012 show and the first chosen products are 3D Machine Vision Library and 3DExpress, from AQSENSE.

"On the booth at ImagingLab, the company demonstrated a system developed for SINTEF that is designed to automate the process of fish fileting (see Fig. 1). It is first necessary to recreate a 3-D image of the fish as it is transported along a conveyor, so a structured laser light from Z-Laser is used to illuminate the profile of the fish. This structured laser light is then captured along with visible light using a 3-D Ranger camera from SICK.

Screen with the picture of the original fish and its 3D reconstruction

To automate the process of fish fileting, structured laser light is used to illuminate the profile of the fish. Inset: Images captured by the camera are then used to render a color image and a 3-D model of the fish. Source: Vision Systems Design

In the demonstration at the show, both the structured light and camera were mounted on a robot from DENSO Robotics. In this configuration, the light source and camera were moved across a stationary model of a fish.

By incorporating ImagingLab's robotics library for DENSO robots with the 3D-Machine Vision Library (MVL) from AQSENSE, captured images from the robot can be rendered as both a 3-D profile and a color image. This enables the size and quality of the fish to be determined as well as how to position a cutting mechanism to filet the fish. At present the system uses structured and color image data; future implementations may incorporate ultraviolet (UV) and infrared (IR) imagers to provide additional information about the quality of the fish.

To ease the task of configuring 3-D systems, AQSENSE demonstrated its 3DExpress preprocessing software at VISION 2012. Designed to be used with a number of structured-light systems and 3-D cameras, the software allows data from these sources to automatically generate a 3-D representation, manipulate the point cloud, and finally export the result so it can be further processed by standard third-party imaging tools such as Sherlock from Teledyne DALSA or with programming languages such as C++ or .NET. A video tutorial about 3DExpress can be found at http://bit.ly/SLxmQw."

"3D Machine Vision Guides Robots into Action" complete article Opens in new window