Remove uneven grey background in black and white sketch

Question

Hi community,

I would say that I'm an intermediate Photoshop user, and with my use of Photoshop on a regular basis (architecture), I constantly face this puzzle :

How to remove a uneven grey background, like this hand sketche photo, to keep only lines and maintain the fluidity and smoothness/expression of the lines ?
Secondly, I have tons of sketches, does an action could automate this task ? (I didn't have good results with AI yet..) I must admit I would love to have a kind of 1 click magic trick here.

123.JPG

I saw this post : https://graphicdesign.stackexchange.com/questions/62676/how-to-remove-neutral-background-in-photoshop

Yet still lots of steps and tweaking...

Thanks alot

CC

ExUSA · Answer

Try a levels or curves adjustment to start, you can move the black slider to the right to increase black range or white slider to the left to increase white range. You should be able to adjust this so the dark grey drops out but the black lines remain.

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.

Scanning file for viruses.

This file cannot be downloaded