Fast and robust recognition and localization of 2D objects

Rainer Otterbach; Rolf Gerdes; R. Kammueller

doi:10.1117/12.193934

9 November 1994 Fast and robust recognition and localization of 2D objects

Rainer Otterbach, Rolf Gerdes, R. Kammueller

Proceedings Volume 2247, Sensors and Control for Automation; (1994) https://doi.org/10.1117/12.193934
Event: Optics for Productivity in Manufacturing, 1994, Frankfurt, Germany

Abstract

The paper presents a vision system which provides a robust model-based identification and localization of 2-D objects in industrial scenes. A symbolic image description based on the polygonal approximation of the object silhouettes is extracted in video real time by the use of dedicated hardware. Candidate objects are selected from the model database using a time and memory efficient hashing algorithm. Any candidate object is submitted to the next computation stage which generates pose hypotheses by assigning model to image contours. Corresponding continuous measures of similarity are derived from the turning functions of the curves. Finally, the previous generated hypotheses are verified using a voting scheme in transformation space. Experimental results reveal the fault tolerance of the vision system with regard to noisy and split image contours as well as partial occlusion of objects. THe short cycle time and the easy adaptability of the vision system make it well suited for a wide variety of applications in industrial automation.

Citation Download Citation

Rainer Otterbach, Rolf Gerdes, and R. Kammueller "Fast and robust recognition and localization of 2D objects", Proc. SPIE 2247, Sensors and Control for Automation, (9 November 1994); https://doi.org/10.1117/12.193934

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