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The Late Movies: Retro Star Wars

Star Wars holds up pretty well no matter what era you put it in. Oh yeah, I know "A long time ago..." but that's just the story. What if we were to set the movies into another period of Hollywood history?

The Empire Strikes Back (Silently)

This video by Venezuelan filmmaker nehomar2005 has been making a stir on the internet this week, possibly because it depicts The Empire Strikes Back, which is widely considered to be the best of the six Star Wars films. However, there are a lot of retro versions of the Star Wars stories we can enjoy, including more from the silent film era.

Silent Star Wars

This one from neonstudtz was made about four years ago, featuring scenes from all three movies of the original trilogy, in little over a minute. And there are many more to come.

Droid Soup

YouTube user bombblastmen made two episodes of a silent Star Wars film. The second part is:

Steamboat Jedi

The Sword of Light

By Davis Li-Jen Lin. It's a martial arts vampire spaghetti western fan film done on a tight budget. This is the story of how the first light saber came about, 6,000 years before the battle of Naboo. That is definitely "a long time ago"! There's also a sequel.

The Story of Luke and Leia

From YouTube user lizzylizzy1. She also did silent films on the relationship between Obi-wan and Anakin and Anakin and Padmé.

A New Hope

Also by lizzylizzy1.

Hitler's Imperial March

If there's anything scarier than the evil Empire, it's history. Here, the ominous Imperial March perfectly accompanies footage of Nazi Germany.

Space Knights

On a lighter note, this movie recalls the adventure serials of the 1930s.

Imperial Propaganda Reel

A recruitment tool for the Empire.

The Empire Strikes Back 1950

Produced as if it were a 1950s 3D film. From master editor Ivan Guerrero.

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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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Name the Author Based on the Character
May 23, 2017
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