X6 - remove one colour text from engineering drawing

[r13jones]

I have a jpeg engineering schematic and want to remove all black text/drawings from the image, any suggestions on how to do that (only other colours on drawing are red and green)?

[Cassel]

Here is one possibility:

- convert the layer to a raster (in case it is a background)
- select all (Ctrl-a)
- Selection > Modify > Select color range
- choose a black color, set the Subtract and the tolerance can be varied depending on what you see in the preview: you want to see all the black disappear
- Invert Selection (ctrl-Shift-i)
- at this point you should be able to delete, with the DELETE key or replace it with a color that would make sense from the background.

[r13jones]

Thank you!