Title :
A method for expecting the features of objects and enabling real-time vision processing
Author :
Burdet, E. ; Koeppe, R.
Author_Institution :
Inst. of Robotics, Eidgenossische Tech. Hochschule, Zurich, Switzerland
Abstract :
This paper presents a mathematical analysis of image processing, algorithms designed according to the results of this analysis, and their implementation. We prove that the search of objects features can be accelerated without loss of precision by using an inhomogeneous density of the sensitive cells the parameters space is composed of. In other words, the visual analysis should be concentrated in the region of the features space around the expected object position. The improvement relative to an uniform cell density is quantified using a cost function corresponding to time and precision optimisation. We show that a Kohonen neural network can be used for efficient image processing, and simulate this strategy. We introduce a simpler algorithm for the case that the object positions are Gauss-distributed around the expected position. This algorithm has been implemented it on a robot guided by a vision system. The robot learned to process images efficiently during the manoeuvres and after that was able to track objects moving in a fast and unpredictable manner
Keywords :
feature extraction; image processing; optimisation; real-time systems; search problems; self-organising feature maps; Gauss distribution; Kohonen neural network; cost function; image processing; inhomogeneously dense sensitive cells; objects features search; precision optimisation; real-time vision processing; time optimisation; Acceleration; Algorithm design and analysis; Cost function; Gaussian processes; Image analysis; Image processing; Mathematical analysis; Neural networks; Process design; Robot vision systems;
Conference_Titel :
Intelligent Robots and Systems '96, IROS 96, Proceedings of the 1996 IEEE/RSJ International Conference on
Conference_Location :
Osaka
Print_ISBN :
0-7803-3213-X
DOI :
10.1109/IROS.1996.571054