Hello Mr. Anurag. It is a forensic exercise, I'm given an image of a paper something written on it that i could read. The person told me there is hidden writing I can reveal using image j. I don't know how to do that in imagej.
Are you refering to something like scale bars or annotations? This could be an overlay (i think u can find it in: Image>Overlay>Show overlay). Not sure that is what you are looking for.
It is a forensic exercise, I'm given an image of a paper with writing that is visible. But the person told me there is hidden text, try to show it in imagej software.