"Universal Jigsaw Puzzle" Hits Stores In Japan

Riktov writes "I came across this at a Tokyo toy store last week, and it's one of the coolest things I've seen in a long time. Jigazo Puzzle is a jigsaw puzzle, but you can make anything with it. It has just 300 pieces which are all just varying shades of a single color, though a few have gradations across the piece; i.e., each piece is a generic pixel. Out of the box, you can make Mona Lisa, JFK, etc, arranging it according to symbols printed on the reverse side. But here's the amazing thing: take a photo (for example, of yourself) with a cell-phone, e-mail it to the company, and they will send you back a pattern that will recreate that photo. This article is in Japanese, but as they say, a few pictures are worth a million words. And 300 pixels are worth an infinite number of pictures."

Comments

Sweet

[Narpak]

Now tell me the pattern for creating an image of unspeakable evil; like the Great Cthulhu.
Cthulhu fhtagn! Cthulhu fhtagn! Ia! Ia! Ia! The sleeper awakens!

Re:Sweet

[Red Flayer]

Impossible. Anyone who had seen the image would be a gibbering heap of insanity, and unable to tell you the pattern. At best you could hope to get enough clues to figure out the pattern yourself... but if you assembled it, you'd either off yourself or also turn into a quivering mass of human flesh.

The key here is to get someone else to assemble the image... you'd find a likely mark (some kind of paranormal investigator, for instance) and then mislead him into thinking the image he's assembling will *stop* the summoning of Cthulhu. Drop enough clues in the right places, use decoys to mislead him of your true intentions, let him be an ignorant pawn in your great game. With luck and skill, you can get him to do the dirty work for you. And the irony of him contributing to the Great Awakening by striving against it is quite delicious.

At least, that's the way I'd do it. Your way is too direct, and not worthy of true evil genius.

Re:Sweet

[CptPicard]

You must be new here, it should be obvious. Send the company a picture of goatse, and have your pattern...

JPEG

[Quietust]

Seems remarkably similar to how JPEG compression works. Not surprisingly, the resulting pictures look a lot like overcompressed JPEGs.

Re:JPEG

[nneonneo]

JPEG chunks an image into 8x8 blocks. An overcompressed JPEG contains so little information per block that the blocks devolve into simple gradient patterns (try this yourself with a grayscale image: save it with a quality near "0" and you will see the individual blocks clearly). If you think about it a bit, this makes sense: the block is being approximated by a combination of a small number of cosine waves (in the limit, it's a single wave along each image dimension), so the result is a gradient, because most of the coefficients have been thrown out by compression.

In this sense, the puzzle pieces can be thought of as representing these simple block patterns. With a 15x20 rectangle of pieces, by JPEG standards, this is essentially an overcompressed 120x160 image. You'll note that if you take your overcompressed JPEG and scale it down to around 25% (30x40), then, provided the original image shows only a single subject, it should still be reasonably recognizable, because the human visual system patches together the pieces to produce a coherent image, even if it is highly distorted.

a few pictures are worth a million words

[Bourdain]

a few pictures are worth a million words

Especially when the accompanying text is in Japanese and I can't read it

Re:Oh Come ON!!!

[Chris Burke]

The maximum number of ways you can arrange 300 things is 300!, or about 3.06 X 10^614. Granted a very large number, but definitely not infinite.

Okay but what if there were 301 pixels, would that be infinite?

And anyway, since pedantry loves company, I'll point out that 300! is the maximum number of orderings of 300 things, not necessarily the maximum number of arrangements. How many arrangements there are depends on what you consider the "rules" for a free-form puzzle like this. Since the pieces do have interlocking teeth I'm going to say that minimally the pieces have to be interlocked (otherwise the possible arrangements truly would be infinite to the extent the universe is), but beyond that does it have to have a specific geometry like 15x20? Does it even have to be rectangular, or can it more resemble a game of dominoes?

do not taunt happy fun puzzle

[SuperBanana]

It essentially has a fixed histogram. I wonder what you'd get back from them if you sent them an image specifically designed to be hard to fit into that histogram...

A squad comprised of a Ninja, a gradeschool girl with magical superpowers, a vampire, and a giant robot. On your doorstep. With a note that politely says, "Do not taunt happy fun puzzle."

Re:infinite?

[ChrisCampbell47]

The result, according to Python, works out to around 1.143*10^796, which is large, but not infinite.

37 minutes.

As I read "infinite" in the summary, I thought "OK, let's see how long it takes for one of these yahoos to calculate how many combinations there really are", since it is of course not infinite. The post went up at 6:02pm, and the parent of this post went up at 6:39pm. Congratulations :)