1

I have a scanned raster image containing contours and rivers. I am trying to use qgis to extract these contour and river polylines for analysis. As a start I was thinking of the following process based on the properties of the file: - making image bitonal - sharpening of narrowing scanned lines - connecting broken lines - removing unwanted scanned text - converting remaining lines to contour lines

can someone assist me on how the above can be accomplished in Qgis?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Browse other questions tagged or ask your own question.