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8 Insanely Lucky Flea Market Finds

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ThinkStock

More often than not, one person's garbage is also another person's garbage. These are the exceptions to the rule. 

1. ITEM: FLOYD LANDIS’S BICYCLE - $5

Sold For: $8000

Although Floyd Landis was stripped of his Tour de France title, it didn’t stop him from cycling. In 2008, a gust of wind blew one of his bikes off the vehicle transporting it. It was found on the side of the interstate and sold to Greg Estes at a garage sale.

2. 17TH-CENTURY PAINTING “PREPARATION TO ESCAPE EGYPT” - $215

Sold for: $27,630

In 2007, a German student visited a Berlin flea market and came home with a new pullout couch. When she opened it, she didn’t discover loose change or a lost remote control—she found a Venetian painting.

3. PAINTING BY ANTHONY VAN DYCK - $660

Not yet sold: Estimated at $660,000

Father Jamie McLeod, a Catholic priest, bought the painting at an antique shop, but only for its gold frame. Later, Antiques Roadshow confirmed it was the work of the top court painter of King Charles I.

4. ANDY WARHOL CHILDHOOD SKETCH - $5

Worth: Estimated $2 million

Andy Fields bought five crappy sketches at a Sin City garage sale. One picture boasted Warhol’s preteen signature.

5. 11TH-CENTURY CHINESE BOWL - $3

Sold for: $2.2 million

In 2013, a New York family bought a dish no bigger than a cereal bowl at a garage sale. The piece was actually 1000 years old!

6. ORIGINAL COPY OF THE DECLARATION OF INDEPENDENCE - $4

Sold for: $2.42 million

In 1989, a Philadelphia man bought a cruddy painting at a flea market. While he was investigating a tear in the canvas, the frame broke apart and out fell a small folded document. It was one of 24 surviving copies of the original 1776 Declaration.

7. ORIGINAL VELVET UNDERGROUND DEMO LP - $0.75

Sold for: $26,200

Roving a Manhattan flea market in 2002, Warren Hill found a sleeveless LP with “Velvet Underground … 4/25/66” scrawled on the label. It was the same demo disc Columbia Records had rejected!

8. ANSEL ADAMS NEGATIVES - $45

Worth, if authentic: About $200 million

Rick Norsigian bought these negatives depicting American landscapes at a Fresno garage sale in 2000. Some experts insist they belonged to Ansel Adams, while others think they were snapped by Earl Brooks.

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iStock // Ekaterina Minaeva
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Man Buys Two Metric Tons of LEGO Bricks; Sorts Them Via Machine Learning
May 21, 2017
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iStock // Ekaterina Minaeva

Jacques Mattheij made a small, but awesome, mistake. He went on eBay one evening and bid on a bunch of bulk LEGO brick auctions, then went to sleep. Upon waking, he discovered that he was the high bidder on many, and was now the proud owner of two tons of LEGO bricks. (This is about 4400 pounds.) He wrote, "[L]esson 1: if you win almost all bids you are bidding too high."

Mattheij had noticed that bulk, unsorted bricks sell for something like €10/kilogram, whereas sets are roughly €40/kg and rare parts go for up to €100/kg. Much of the value of the bricks is in their sorting. If he could reduce the entropy of these bins of unsorted bricks, he could make a tidy profit. While many people do this work by hand, the problem is enormous—just the kind of challenge for a computer. Mattheij writes:

There are 38000+ shapes and there are 100+ possible shades of color (you can roughly tell how old someone is by asking them what lego colors they remember from their youth).

In the following months, Mattheij built a proof-of-concept sorting system using, of course, LEGO. He broke the problem down into a series of sub-problems (including "feeding LEGO reliably from a hopper is surprisingly hard," one of those facts of nature that will stymie even the best system design). After tinkering with the prototype at length, he expanded the system to a surprisingly complex system of conveyer belts (powered by a home treadmill), various pieces of cabinetry, and "copious quantities of crazy glue."

Here's a video showing the current system running at low speed:

The key part of the system was running the bricks past a camera paired with a computer running a neural net-based image classifier. That allows the computer (when sufficiently trained on brick images) to recognize bricks and thus categorize them by color, shape, or other parameters. Remember that as bricks pass by, they can be in any orientation, can be dirty, can even be stuck to other pieces. So having a flexible software system is key to recognizing—in a fraction of a second—what a given brick is, in order to sort it out. When a match is found, a jet of compressed air pops the piece off the conveyer belt and into a waiting bin.

After much experimentation, Mattheij rewrote the software (several times in fact) to accomplish a variety of basic tasks. At its core, the system takes images from a webcam and feeds them to a neural network to do the classification. Of course, the neural net needs to be "trained" by showing it lots of images, and telling it what those images represent. Mattheij's breakthrough was allowing the machine to effectively train itself, with guidance: Running pieces through allows the system to take its own photos, make a guess, and build on that guess. As long as Mattheij corrects the incorrect guesses, he ends up with a decent (and self-reinforcing) corpus of training data. As the machine continues running, it can rack up more training, allowing it to recognize a broad variety of pieces on the fly.

Here's another video, focusing on how the pieces move on conveyer belts (running at slow speed so puny humans can follow). You can also see the air jets in action:

In an email interview, Mattheij told Mental Floss that the system currently sorts LEGO bricks into more than 50 categories. It can also be run in a color-sorting mode to bin the parts across 12 color groups. (Thus at present you'd likely do a two-pass sort on the bricks: once for shape, then a separate pass for color.) He continues to refine the system, with a focus on making its recognition abilities faster. At some point down the line, he plans to make the software portion open source. You're on your own as far as building conveyer belts, bins, and so forth.

Check out Mattheij's writeup in two parts for more information. It starts with an overview of the story, followed up with a deep dive on the software. He's also tweeting about the project (among other things). And if you look around a bit, you'll find bulk LEGO brick auctions online—it's definitely a thing!

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Opening Ceremony
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These $425 Jeans Can Turn Into Jorts
May 19, 2017
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Opening Ceremony

Modular clothing used to consist of something simple, like a reversible jacket. Today, it’s a $425 pair of detachable jeans.

Apparel retailer Opening Ceremony recently debuted a pair of “2 in 1 Y/Project” trousers that look fairly peculiar. The legs are held to the crotch by a pair of loops, creating a disjointed C-3PO effect. Undo the loops and you can now remove the legs entirely, leaving a pair of jean shorts in their wake. The result goes from this:

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Opening Ceremony

To this:

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Opening Ceremony

The company also offers a slightly different cut with button tabs in black for $460. If these aren’t audacious enough for you, the Y/Project line includes jumpsuits with removable legs and garter-equipped jeans.

[h/t Mashable]

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