Crop White Space From Around Multiple Images

[carl123]

15 minutes ago, NotMyFault said:

@carl123 nice job!

could you give a brief description how the macro works?
from the forum post i assume it use flood selection ad the crop,(to selection), but how do you determine the position where you sample the color?

The first V2 macro I used did use Flood Select at the top-left of the image but that was always going to be problematic.

So, for the second V2 macro I used a duplicated background layer with a Threshold Adjustment layer to better separate the image from its white border. I then used Select > Tonal Range > Select Highlights to select the white border. The surrogate duplicated background layer could then be deleted leaving the original background layer with the selection still in place which could then be deleted

 

[NotMyFault]

Any idea to correct sligthly rotated images? 

[carl123]

5 hours ago, NotMyFault said:

Any idea to correct sligthly rotated images? 

Not automatically, I only know how to do that manually

[thomaso]

6 hours ago, NotMyFault said:

Any idea to correct sligthly rotated images? 

If it concerns scans, the scan software may have a more or less hidden option.

[Andy Nickless]

1 hour ago, thomaso said:

If it concerns scans, the scan software may have a more or less hidden option.

Yes - thank you, but we are talking about existing scans which were done years ago.

[NotMyFault]

2 hours ago, thomaso said:

If it concerns scans, the scan software may have a more or less hidden option.

Sorry I asked imprecise. I asking for mass/batch correction of rotated scans in Photo, and for images where rotation might differ for every image.

i have some moonshot ideas how it could work, e.g. using some filter magic to enable/disable perspective distortion filters (for rotation) based on detecting white edge areas on one side only.

[thomaso]

1 hour ago, NotMyFault said:

I asking for mass/batch correction of rotated scans in Photo, and for images where rotation might differ for every image.

Not in APhoto but a simple batch correction may work via Acrobat -> OCR. Note, since the feature actually is meant to find horizontal lines of text, it does not work as desired if the image subject contains a clear horizontal axis that is not parallel to the image edges, like the table image in this examples:

[Andy Nickless]

On 8/17/2024 at 1:34 PM, carl123 said:

 

Scan Crop V2.afmacros 3.61 kB · 4 downloads

I just want to thank those who have tried to assist with this problem - and to say that I've settled on the above Macro.
It does a great job with the vast majority of images which require a white border removing.
 

Obviously special thanks go to Carl123 for his patient help.
(As you predicted, the more aggressive macro was just a bit too keen - and sometimes clipped useful material away.).

The experience has taught me that I must spend time learning a lot more about Affinity Photo (and the rest of the suite) as there's a huge amount I was totally unaware of.

[lacerto]

Obsolete.