What method?

Discussion created by pierre.weisse on May 4, 2014
Latest reply on May 4, 2014 by nidhinkn
I am looking for an automatic vectorization method to obtain the contours in 1/3000 of my objects. I ArcGIS 10.0 with extension ArcInfo.
My raster file (TIFF) is a forest base map where I want Polygonize objects classified as follows: forest, without forest and trail. The objective is to get a file .shp polygon contours of each object classification.
I tried several methods: by Spatial Analyst Raster to vector 'that gave nothing, partly because the file is too heavy. Another, using ArcScan but the contours of polygons are imprecise. And finally supervised classification using spectral signatures, which gives a more accurate result but after processing raster to vector via ArcScan the result is not terrible ...

Thank you for your help.