Thanks, Jorge, For your valuable reply. Can you suggest some algorithm that I can start implementing as I have some basic knowledge of OpenCV.
Awaiting for your positive response. Thanks & Regards, Harsh <https://mailtrack.io/> Sent with Mailtrack <https://mailtrack.io/install?source=signature&lang=en&[email protected]&idSignature=22> On Thu, Apr 13, 2017 at 1:18 PM, Jorge Gustavo Rocha <[email protected]> wrote: > Hi Sai Harsh, > > I would start by learning OpenCV [1]. OpenCV is a sophisticated image > processing library with Python bindings you can use with QGIS. You can > write your own algorithm to isolate the roads. Search the web for object > detection and classification examples. > Machine learning is probably the best approach. You have already images > with roads, so you have many examples for machine learning (positive > cases). So, after playing with OpenCV, look for machine learning (with > OpenCV). > > Regards, > > Jorge Gustavo > > [1] http://opencv.org/ > > Às 06:58 de 13-04-2017, Sai Harsh Tondomker escreveu: > > Dear All, > > I am Sai Harsh, an UG student in IIIT-Chittoor, India. > > > > I want to convert raster image to vector shape layer. I knew that in > > qgis this feature already exists but it's limited. > > > > Let us suppose If one google roadmap image is given as an input, after > > converting it into vector shape layer(using the existing conversion), I > > would like to highlight one road line(manually using attribute table) > > but it's not working. correct me if I am wrong. > > > > Can anyone suggest me how I need to proceed? > > > > I know there should be some image processing algorithm need to be > > applied, then followed by converting it into vector layer format. > > > > Which image processing algorithm I need to apply to get good accuracy? > > > > Awaiting for a positive response. > > > > Best Regards, > > Harsh > > IIIT-Chittoor > > > > > > > > > > <https://mailtrack.io/> Sent with Mailtrack > > <https://mailtrack.io/install?source=signature&lang=en&; > [email protected]&idSignature=22> > > > > <#> > > > > > > _______________________________________________ > > Qgis-developer mailing list > > [email protected] > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > > > J. Gustavo > -- > Jorge Gustavo Rocha > Departamento de Informática > Universidade do Minho > 4710-057 Braga > Tel: +351 253604480 > Fax: +351 253604471 > Móvel: +351 910333888 > skype: nabocudnosor > _______________________________________________ > Qgis-developer mailing list > [email protected] > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer
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