2022-09-02 20:47:51 <KipIngram   > Ugh.
2022-09-02 20:48:14 <KipIngram   > So, a couple of years ago my kids got me a digital photo frame for Christmas; one of the ones you can email pictures to.
2022-09-02 20:48:16 <KipIngram   > Love it.
2022-09-02 20:48:28 <KipIngram   > I decided to get one for my mom; her birthday is Wednesday.
2022-09-02 20:48:41 <KipIngram   > So, got and started thinking about how to pre-load it.
2022-09-02 20:48:54 <KipIngram   > The services web portal doesn't offer a bulk download feature.
2022-09-02 20:49:08 <KipIngram   > No problem - i installed a plugin into Chrome and downloaded all the images that way.
2022-09-02 20:49:16 <KipIngram   > The service portal does offer a bulk upload.
2022-09-02 20:49:44 <KipIngram   > So, I did that, and it spun and spun and spun and wound up transferring 410 of 704 photos before crashing.
2022-09-02 20:49:52 <KipIngram   > Well, damn it.
2022-09-02 20:50:25 <KipIngram   > So, I figured it shouldn't be too bad - I downloaded all of the ones that made it to her frame into another directory, and thought I'd use dupes to figure out which ones were still  left to go.
2022-09-02 20:50:27 <KipIngram   > But...
2022-09-02 20:50:36 <KipIngram   > They don't have the same names.
2022-09-02 20:50:38 <KipIngram   > And...
2022-09-02 20:50:44 <KipIngram   > THEY DON'T HAVE THE SAME SIZES.
2022-09-02 20:51:02 <KipIngram   > Some sort of tinkering was done somewhere in the chain.
2022-09-02 20:51:34 <KipIngram   > I'm sitting here thinking that if I really want to set a challenge for myself, I'll set out to write a program that compares them by image comparison.
2022-09-02 20:51:44 <KipIngram   > The way we'd do it manually.
2022-09-02 20:51:48 <KipIngram   > Except automated.
2022-09-02 20:52:35 <KipIngram   > Shouldn't be that hard to write something that would check dimensions first, then grid by pixels and compute some sort of grid cell averages to produce a signature.
2022-09-02 20:52:56 <KipIngram   > Then match those signature shapes.
2022-09-02 20:53:16 <KipIngram   > Wouldn't require an exact match - just look for the same pattern of variation across the image.
2022-09-02 20:53:54 <KipIngram   > I could probably do it manually in less time, but it seems like an interesting problem.
2022-09-02 21:27:04 <KipIngram   > My first thought about that would be to grid each picture into an NxN array of cells, calculate some value for each cell, regard those N^2 values as a vector in N^2 dimensional space, and normalize it to unit length.
2022-09-02 21:27:41 <KipIngram   > Then match by finding the angles a pic in group 1 makes with each pic in group 2; minimum angle gets selected as the match.
2022-09-02 21:29:27 <KipIngram   > This would be after unwinding any compression - I'd have to get 'em to RGB form first.
2022-09-02 21:30:23 <KipIngram   > might be better to keep the color channels separate, so it would be 3*N^2 dimensional space.
2022-09-02 21:45:13 <KipIngram   > Wow - Python PIL is sweet.
2022-09-02 21:47:34 <thrig       > a bitter pill to swallow
2022-09-02 21:51:43 <KipIngram   > :-)
2022-09-02 21:52:04 <KipIngram   > Easy to load the image; easy to read out pixel data.
2022-09-02 21:52:20 <KipIngram   > This won't be as hard as I thought it might be.
2022-09-02 21:54:10 <KipIngram   > from PIL import image
2022-09-02 21:54:19 <KipIngram   > img=Image.open(path)
2022-09-02 21:54:36 <KipIngram   > r,g,b = img.getpixel((x,y))
2022-09-02 21:54:39 <KipIngram   > That's it.
2022-09-02 21:55:13 <KipIngram   > This is why I like Python - it just makes stuff like this so simple.
2022-09-02 21:56:26 <KipIngram   > I'll need a bit of bookkeeping; check sizes and so on.  But that all looks equally simple.