I have a district boundary shapefile. I want to divide that district according to the boundaries given in image. How we can achieve it?
Can we add vector file first then add image as an overlay on it and extract the boundaries from image?
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Assuming your image is black-and-white only, you georeference it and then use
extraction - contour lines to extract all the black lines as a shapefile. Since you get rather pixelated polygons, you'll then need to do some manual clean-up and maybe convert the polygons to lines, if you want to process them further.