Is there any program under linux where I can do the following:
Suppose I have for example a scan of a drawing on a squared paper and suppose that the squares of the original paper have any distance but not 0,5 cm.
Now I want that the squares of the output picture have a distance of exactly 0.5 cm.
I tried to include the picture to
inkscape and use the ruler to rezize the picture appropriately but this was a pain.
I think something like this would be great: Have a "distance tool" where you can select two points of a picture (for example two vertices of my squared paper squares) then you define that the distance between those points should be say 0.5 cm then the whole picture should scale appropriately while preserving aspect ratios.
Note that I am mainly interested in a solution where I don't have to measure the distance on the original paper using a physical ruler or something like that.
Finally I want a DIN A4