I have a picture (fictional) of a mountain. What I want and am not able to do without help, is to make the coordinates and height to the right scale.
I have a line that represents 10 km on the original picture and some height contours. I've made the colour picture into greyscale but now, when I try to make it a 3D model using Qgis2threejs, I doesn't work, I think because the file doesn't have a DEM layer. The Profile Tool Plugin does give the right shape, but not the correct heights.
At the end of this I want to be able to calculate volumes of (pieces of) the mountain above certain contours. And I need to make a 3d model of these parts of the mountain (maybe using qgis2threejs plugin)
Edit: sorry for not giving enough info, the greyscale was made by checking which style the first picture had and turning each colour separatly into a 32-greyscale using GIMP like this. The first picture is only an image, so .png, therefore the grayscale is also only a .png image.
The image is not geo-referenced because it is a fictional mountain, the only reference is the 10 km line in the colour image. The height contours are 50 m each with the 2,4 to 2,5 km contours defined as such. This is the only data I have, two pictures.