I have a .png image i wish to overlay on a base image.

My overlay image contains just a red slant line. I need to get the red line overlayed on the base image at the same co-ordinate as it is in overlay image.

The problem is I do not have the co-ordinates location.

I need to find it programmatically with C#. The overlay image will always be transparent or of white background. What code to find the line co-ordinates from overlay image?

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