I created the same two images as posted by @nablator.
Differences (beside the algorithm used) are:
- all parchment is shown in a standard parchment colour, not from the original image
- it did not just detect/remove green, but all colours
- the image was smoothed before. (This becomes clearly visible when zooming in).
The images were created as BMP and converted to JPG using Irfanview on Windows.
It clearly mistakes some of the darker parts as 'brown paint', probably because I forgot to tell it not to look at brown. It took me a while to figure out how to do this at all.
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Edit: the ink was drawn with the original colour of the (smoothed) image, so it still has the appearance of colour in some places.
In the following link the ink has been drawn in a 'standard' ink colour.
Link to image without paint: You are not allowed to view links. Register or Login to view.
Differences (beside the algorithm used) are:
- all parchment is shown in a standard parchment colour, not from the original image
- it did not just detect/remove green, but all colours
- the image was smoothed before. (This becomes clearly visible when zooming in).
The images were created as BMP and converted to JPG using Irfanview on Windows.
It clearly mistakes some of the darker parts as 'brown paint', probably because I forgot to tell it not to look at brown. It took me a while to figure out how to do this at all.
Link to image of paint only: You are not allowed to view links. Register or Login to view.
Link to image without paint: You are not allowed to view links. Register or Login to view.
Edit: the ink was drawn with the original colour of the (smoothed) image, so it still has the appearance of colour in some places.
In the following link the ink has been drawn in a 'standard' ink colour.
Link to image without paint: You are not allowed to view links. Register or Login to view.