5 ms·

When my kids were younger, they used to subscribe to a children's magazine that featured a monthly "spot the difference" puzzle. They were amazed when I used to

When my kids were younger, they used to subscribe to a children's magazine that featured a monthly "spot the difference" puzzle. They were amazed when I used to glance at the image and rattle off the one obscure difference they missed. My trick was based on "magic eye" images I used to enjoy. When I saw the side-by-side drawings used by the puzzle, I wondered what would happen if I "fuzzed" my eyes as if I was looking at a magic eye photo. To my surprise, all of the items that were different between the two images "vibrated" or "shimmered", while the rest of image stayed steady. I repeatedly fuzzed and focused to spot all the differences in a matter of seconds.

satvikpendem 3y ago
Yep, I do this too. One thing that's cool is viewing stereograms that have differing colors. Some people apparently can see new colors via this method that is not simply a mix of the two colors.
- antiterra 3y ago
  If this made anyone else curious, I found https://m.youtube.com/watch?v=cQCsDfEqr9o https://m.youtube.com/watch?v=cQCsDfEqr9o from a post with a ‘blellow’ stereogram https://www.reddit.com/r/MagicEye/s/pd2FtY5PnY https://www.reddit.com/r/MagicEye/s/pd2FtY5PnY There’s some skeptical commentary in the thread as wel.
  - animal531 3y ago
    If I look at that dead center then I get a gradient between the two colors. If I look left or right I get predominantly that color. Sometimes an inverse gradient will appear and/or it'll shimmer, but I wouldn't say that it's at any time a "new" color.
Dwedit 3y ago
I use this for diffing on a PC, such as when you have a hex editor open that doesn't have a built in diffing feature.
- jstanley 3y ago
  I find a good technique is to load hex dumps in vimdiff.
jpmoral 3y ago
Highlights for Children?
- mountain_peak 3y ago
  Indeed! Great magazine... I also recall playing a black-and-white space game (top-down scroller) for the original Macintosh where the instructions asked you to tape a piece of cardboard to the middle of the display such that each eye had a separate image of the split screen, which ended up providing a 3D effect without special glasses. I can't seem to recall what the game was, but I could play without the cardboard using the same vision technique (the 3D effect was very pronounced when playing in a dark room).
harywilke 3y ago
In in astronomy, they used to use a similar technique to 'spot the difference' between photographs of the night sky to find moving objects. They used a special stereo microscope that would place one image in front of each eye. The images were of the same part of the night sky, but separated by time. I saw one recently at the Palomar Observatory. Here is a more elaborate one from the National Air and Space museum: https://airandspace.si.edu/collection-objects/microscope-astronomical-stereo-blink/nasm_A19960303000 https://airandspace.si.edu/collection-objects/microscope-ast...
rezaprima 3y ago
I even use this technique to find difference of two strings like encoded text, one printed above the other.

satvikpendem 3y ago

Yep, I do this too. One thing that's cool is viewing stereograms that have differing colors. Some people apparently can see new colors via this method that is not simply a mix of the two colors.

antiterra 3y ago
If this made anyone else curious, I found https://m.youtube.com/watch?v=cQCsDfEqr9o https://m.youtube.com/watch?v=cQCsDfEqr9o from a post with a ‘blellow’ stereogram https://www.reddit.com/r/MagicEye/s/pd2FtY5PnY https://www.reddit.com/r/MagicEye/s/pd2FtY5PnY There’s some skeptical commentary in the thread as wel.
- animal531 3y ago
  If I look at that dead center then I get a gradient between the two colors. If I look left or right I get predominantly that color. Sometimes an inverse gradient will appear and/or it'll shimmer, but I wouldn't say that it's at any time a "new" color.

Dwedit 3y ago

I use this for diffing on a PC, such as when you have a hex editor open that doesn't have a built in diffing feature.

jstanley 3y ago
I find a good technique is to load hex dumps in vimdiff.

jpmoral 3y ago

Highlights for Children?

mountain_peak 3y ago
Indeed! Great magazine... I also recall playing a black-and-white space game (top-down scroller) for the original Macintosh where the instructions asked you to tape a piece of cardboard to the middle of the display such that each eye had a separate image of the split screen, which ended up providing a 3D effect without special glasses. I can't seem to recall what the game was, but I could play without the cardboard using the same vision technique (the 3D effect was very pronounced when playing in a dark room).

harywilke 3y ago

In in astronomy, they used to use a similar technique to 'spot the difference' between photographs of the night sky to find moving objects. They used a special stereo microscope that would place one image in front of each eye. The images were of the same part of the night sky, but separated by time. I saw one recently at the Palomar Observatory. Here is a more elaborate one from the National Air and Space museum: https://airandspace.si.edu/collection-objects/microscope-astronomical-stereo-blink/nasm_A19960303000 https://airandspace.si.edu/collection-objects/microscope-ast...

rezaprima 3y ago

I even use this technique to find difference of two strings like encoded text, one printed above the other.