There is also gdal_polygonize and the reverse gdal_rasterize.  I've
had best success with these for large contiguous areas of the same
value, like land cover/class.

http://gdal.org/gdal_polygonize.html
http://gdal.org/gdal_rasterize.html

Regards, Eli


On Fri, Aug 10, 2012 at 3:58 AM, Zhengfan Lin <[email protected]> wrote:
> +1 for this. I'm also working on a huge digitalizing project. Need some
> handy tools.
>
> I've been searching for vectorizing/digitalizing tools for some time. Was
> about to post a similar mail to this list, but Silva got ahead of me. :-)
>
> Thanks in advance.
>
> Zhengfan Lin
>
> On Aug 10, 2012 4:26 PM, "mrmmsilva" <[email protected]> wrote:
>>
>> Hello,
>>
>> I need suggestions for software open source that allows me to convert a
>> scanned map to vector format.
>>
>> thank you very much.
>>
>>
>>
>> --
>> View this message in context:
>> http://osgeo-org.1560.n6.nabble.com/Convert-a-scanned-map-to-vector-format-tp4994361.html
>> Sent from the OSGeo Discuss mailing list archive at Nabble.com.
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>
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