Remove black background from images

[SteelMassimo]

Hello everyone!

I'm new to the software, so please bear with me

I have a bunch of images containing white paper on a black background(which is full of little white dots). I need to get rid of this this background, while at the same time resizing the image so that only the white paper is shown.

Is there a particular action flow that you guys reccomend? Crop maybe?

Here's a sample of how it is and how it should become.

Thanks for the help!

[XnTriq]

Welcome to the forum, SteelMassimo.

Tools → Batch convert… → Settings:

• Preview background color [ █ ]

Tools → Batch convert… → Actions:

• Map → Negative
• Image → Automatic deskew
• Map → Negative
• Image → Crop → From position (pixels)
  X [ 420 ]
  Y [ 125 ]
  Width [ 1220 ]
  Height [ 1830 ]

p154541.tif

Result

(10.95 KiB) Downloaded 48 times

[SteelMassimo]

Hello XnTriq!

Thanks for the answer, is solves my problem partialy...see, it's a lot of images, and there is a lot variation in resolution and the position of the white page (normaly it contains text). The firt 2 instructions are fine, but the crop is completely dynamic, as the white part can appear anywhere on the black background.

Sorry if I did'nt explain in full detail. Here is another example of what can happen.

In this file, height is bigger than width, the paper is still in the middle, but the position can vary o lot for the whole package (need to batch convert around 7000 images). The white dots on the background can also be a bit of an issue.

Is there any other action that allows me to remove the background more dynamicaly?

[XnTriq]

The white dots on the background can also be a bit of an issue.

Yes, Image → Automatic crop… won't do the trick.

Is there any other action that allows me to remove the background more dynamicaly?

Have you looked into document scanning apps?

• PCMag UK: The Best Mobile Scanning Apps of 2019
• TechRadar: Best document scanning apps of 2018
• fossBytes: 8 Free & Best Android Scanner Apps Of 2018 To Save Documents In High Quality

Related topic: "Cropping" and saving

[XnTriq]

Scan Tailor Advanced

p154589_1.png (7.03 KiB) Viewed 1164 times

p154589_2.png (1.68 KiB) Viewed 1164 times