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Four Artists Around the World

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January 27 is a significant for four artists around the world. Hendrick Avercamp was baptized on January 27, 1585; Arkhip Kuindzhi was born on January 27, 1842; Seison Maeda was born on January 27, 1885; and Rita Angus died on January 27, 1970. A little about each of these talented artists:

Hendrick Avercamp (1585-1634) was known as "de Stomme van Kampen," or "the mute of Kampen," because he was deaf. The Dutch landscape painter was greatly popular during his lifetime and is still collected today. Queen Elizabeth II apparently possesses an "outstanding collection of his works" that is displayed at Windsor Castle.

Shown is Avercamp's "River Landscape," available larger here. If you like Avercamp's work, check out this gallery of his paintings.

Kuindzhi.jpg The Russian painter Arkhip Kuindzhi (1842-1910) developed a strong work ethic at a young age, due to a personal tragedy: both his parents died when he was 6. He was "forced to make his living" through a variety of odd jobs, mostly manual labor. In his 20s, he worked for several years as a photo retoucher. By the late 1800s, Kuindzhi was a professor at the St. Petersburg Academy of Arts but was fired in 1897 for supporting student protests.
Shown is Kuindzhi's "The Ladoga Lake," available larger here.

Maeda.jpgSeison Maeda (1885-1977) was born Maeda Renzō; his art teacher bestowed the name "Seison" on him when Maeda was 17. Although Maeda toured Europe, viewing the art in Rome, Florence, and Paris, he continued to paint in traditional Japanese styles of painting. He went on to become one of the most respected Japanese artists, selected to decorate a hall in the Imperial Palace and to assist in the restoration and preservation of ancient frescoes. Upon his death, he was honored with a 13-story pagoda at a temple for his grave.

Shown is Maeda's "Yoritomo in a Cave," available larger here.

Angus.jpg The New Zealand painter Rita Angus (1908-1970) signed many of her paintings as Rita Cook, having been married to fellow artist Alfred Cook for 9 years (of which they were separated for 5). She changed her surname to McKenzie, her paternal grandmother's name, after discovering that her ex had remarried. As a result, her paintings may be signed Rita Cook, R. Mackenzie, R. McKenzie, or Rita Angus. Over the course of her career, Angus painted 55 self-portraits, which showed the passing years and her changing emotions.

Shown is Angus' "Boats, Island Bay," available larger here. If you like her work, check out the Rita Angus: Life and Vision exhibit.

"Feel Art Again" appears every Tuesday, Thursday, and Saturday. You can e-mail us at with details of current exhibitions, for sources or further reading, or to suggest artists.

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iStock // Ekaterina Minaeva
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
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:


Opening Ceremony

To this:


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]