Machine Vision: End User Solutions
Parts Positioning and Robotic Guidance
For inspection on high-speed production lines, offline verification audits or robot-guided pick and place, positioning tools are critical to successful machine vision. Positioning tools, locators or pattern finders recognize and determine exact position and orientation of parts. Results can be transferred directly to material handling devices or used to position other tools required for the inspection. We refer to this correcting for part movement as landmarking.
Precision Alignment Capabilities
DALSA's products provide a variety of positioning tools that range from simple edge finders to sophisticated pattern finding algorithms. Selecting the appropriate positioning tool (or tools) for a specific application is typically based on the following criteria:
- Part Features: high contrast unique features or complex similar patterns
- Part Movement: XY only or with rotation
- Part Appearance: pattern variation due to process or environment changes
- Part Orientation: small rotation or 360° rotation
Edge Positioning Tools
Edge positioning tools provide very fast location of objects that have well-defined straight lines. They calculate the intersection point between the horizontal and vertical edges along with the rotation.
Pattern positioning is better for complex images with irregular shapes, low contrast, or process variations. These tools support patterns defined by pixel intensity or geometric shape.
