Page 1 of 1

Background noise removal unsuccessful

Posted: 2020-02-19T10:36:01-07:00
by longjohn85
Hi,

I am trying to remove the background noise from the image below

https://drive.google.com/drive/folders/ ... sp=sharing

I had tried several methods but the background noise cannot be removed. The recent script I had tried which I see resembles the closest to my scenario is as below:

Code: Select all

noisecleaner -m 2 -n 10 out.png out.png
textcleaner -f 25 -o 10 out.png out_2.png
I would really need some advice on how I can remove the background noise to achieve satisfactory OCR results. I am using ImageMagick-7.0.9-Q16

Thanks in advance.

Re: Background noise removal unsuccessful

Posted: 2020-02-19T11:18:14-07:00
by fmw42
One suggestion is to use -lat (local area thresholding) followed by -connected-components processing to remove the smaller noise dots.

None of my scripts will likely help the kind of noise that you have.