Abstract
This paper presents a local measurement based on the level lines within an image. Its most important feature is that it separates local geometry (the shape of the level lines) from local contrast (the grey-levels). Using only the first of these we have derived two types of motion detection one of which relates to the disappearance of local level lines and the other to a change in their local geometry. The nature of the measurement allows us to use both a short term and long term time reference and therefore detect objects that are moving or that were not present a few minutes (for example) before. We have used this technique in a number of applications. Appraisals by transportation operators have provided encouraging results.
A part of the work presented is undertaken in the CROMATICA project. It is granted by the EC in the 4th PCRD framework.
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© 2002 Kluwer Academic/Plenum Publishers
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Guichard, F., Bouchafa, S., Aubert, D. (2002). A Change Detector Based on Level Sets. In: Goutsias, J., Vincent, L., Bloomberg, D.S. (eds) Mathematical Morphology and its Applications to Image and Signal Processing. Computational Imaging and Vision, vol 18. Springer, Boston, MA. https://doi.org/10.1007/0-306-47025-X_35
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DOI: https://doi.org/10.1007/0-306-47025-X_35
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