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Master Thesis

Vectorisation semi-automatique de planches scannées du cadastre ancien

Abstract : The first cadastral maps date back to the 1810s, they have been and are still being updated, making the cadastre a source of information to study the evolution of a territory. Historical cadastral maps can be scanned and made available in raster format, but this format is not sufficient to carry out a complete analysis of the spatial changes of a territory over time. A vector format would be much more suitable. The operation that allows to pass from raster to vector data is the vectorization. Numerous publications deal with automatic and semi-automatic vectorization and the methods differ according to the input data. Particular attention is therefore paid to the pre-processing step prior to the vectorization. In this work, we propose a methodological toolchain for semi-automatic vectorization of old scanned cadastral maps using free and open source software. A first method is based on the extraction of the segments whereas the second is based on the vectorization by tracking. The obtained results must undergo a manual cleaning, more or less substantial according to the age of the cadastral map.
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Master Thesis
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  • HAL Id : dumas-01835690, version 1



Charlotte Odie. Vectorisation semi-automatique de planches scannées du cadastre ancien. Sciences de l'ingénieur [physics]. 2017. ⟨dumas-01835690⟩



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