Ladies and Gents, I give you.... PMGS StampFix version 2.

First, a little about the "Why?".
Since I created PMGS StampFix v1.0 back in 2016, I've changed computers, and I was never able to get my new computer setup properly to work on the app. The versions of all the various software bits-and-pieces that I needed were no longer available for download. This meant that I had to keep an old computer around just for working on the app, and that eventually, to get it working on the new computer, I was going to have to update it the newer versions of Java and the various add-ins, since those were the ones that were now available for download.
So, that time has come. I also took this opportunity to re-write about 95% of the code, hopefully making it more efficient, and to add some new features that should help get stamps from scans that were otherwise un-processable.
Before we get to what's new, a little about what's changed from v1.64.
1. New OS SupportThere is now a single version for Mac, a single version for Windows, and a version for Ubuntu-based Linux. No more light and full packages, and no more 32-bit Windows support. The files are bigger with the new Java bundled, but that ensures it will work consistently across installations. Also, for any Linux users, other versions might be possible, I just don't have the ability to test them because I only have an Ubuntu machine. If you use a different version of Linux and want to give it a try, e-mail me and I'll see what I can do to build an installation package for your specific OS version.
2. The Appearance.As is always the case when new features are added, some reorganization is required for space reasons. Here's the new StampFix window.

All of the old features are still there, just in new places.
There used to be separate load buttons for processing a single stamp from a single file, processing multiple stamps from a single file, processing multiple files, and processing folders. There is now 1 load button that handles all files. Folders can't be handled be the file chooser, but those can still be dragged and dropped.
The former contents of the sidebars (left sidebar had processing and output settings, right sidebar had settings for extracting multiple stamps from a single image) are now in tabs in the left sidebar.
3. A few Quality-of-Life ImprovementsYou can now double-click in the image window to open the File Chooser.
Dragging and dropping a folder will now output with the same folder structure as the input folder.
4. Accuracy ImprovementsThe background color detection is much better, and there's now a toggle that allows you to force a black or white background color.
And now the big news - what's new!
1. CroppingIn the past, this image would have been un-processable.

Scanning these stamps in the card caused too much clutter in the background, and the app couldn't find the stamps.
Now, when you load this image, it still generates an initial error saying that it can't find the stamps, but then you have a couple new options that can get you to where you want to go. The first is the Crop.
You can click the crop button and draw a new rectangle that, when you release the mouse button, extracts that portion and re-processes it as if it's a new image. This helps to find those stamps that were otherwise lost in the background clutter.
2. Manually Drawing Bounding BoxesWith the image shown above, you have another option, which is to manually draw a bounding box. Once you finish drawing the new bounding box, the app searches within that box for stamps, and if it finds any, draws a new blue box around them. As with the cropping function, this allows you to find otherwise undetectable stamps by "removing" the background clutter. This function differs from the crop function in that it doesn't dispose of the remainder of the image, so if you need to draw multiple manual bounding boxes you can.
3. Extracting without Rotating/CroppingYou can also use the manually drawn bounding boxes and autodetected bounding boxes to extract stamps or entire regions of the image without processing them at all. No rotation, no cropping, just extraction.
4. Removing bounding boxesFinally, you now have the ability to manually remove bounding boxes as well.

My hope will all these changes is that folks who weren't able to have success with the app in the past because of their workflow (scanning stamps in stockbooks, dealer cards, etc.) will now have more success with it.
I have no doubt that, because of the volume of the changes and the complexity of the new features, there will be bugs. If you spot any bugs, see any behavior that isn't as you would expect, or just have any questions, please let me know. Additionally, if you have an image you're unable to process, please send it to me. If I can't get you settings to make it work, I can at least use it to guide future fixes and features.
Download is
here, as are a Youtube video, a written guide, and animated .gif demos.