Vision System for Subpixel Laser Stripe Profile Extraction with Real Time Operation
Computer vision systems are playing an important role in 3D measurement for industrial applications. Real time image processing algorithms are useful in order to achieve reliability in feature extraction from the global environment starting from planar images. For example, in a structured light vision system is essential to extract the pattern that a laser source is shaping with the objects under inspection. In this sense, this work describes a single strip image extraction algorithm that could be used as an analysis tool in those structured light systems. The experimental setup is implemented using the following equipment: A PC equipped with a frame grabber, a high-resolution CCD camera, a laser stripe projector and specific software developed using Visual C++6. The system accomplishes with real time operation and high subpixel accuracy.
KeywordsReal Time Operation Camera Calibration Coordinate Measuring Machine Frame Grabber Circular Pattern
- 3.Data Translation: SDK DT-Active Open Layers User’s Manual. Data Translation, USA (1999) Google Scholar
- 4.Harris, K., Efstratiadis, S.N., Maglaveras, N., Gourassas, J., Pappas, C., Louridas, G.: Coronary Arterial Tree Extraction based on Artery Tracking and Mathematical Morphology. Computers in Cardiology 25, 769–772 (1998)Google Scholar
- 6.Steger, C.: Subpixel-Precise Extraction of Lines and Edges. International Archives of Photogrammetry and Remote Sensing XXXIII, 141–156 (2000)Google Scholar