New Robots Developed to Harvest Lettuce for First Time

A robot that can pick ripe strawberries at an expo in Tokyo in 2013. Photo: AFP
A robot that can pick ripe strawberries at an expo in Tokyo in 2013. Photo: AFP
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New Robots Developed to Harvest Lettuce for First Time

A robot that can pick ripe strawberries at an expo in Tokyo in 2013. Photo: AFP
A robot that can pick ripe strawberries at an expo in Tokyo in 2013. Photo: AFP

Researchers at the University of Cambridge have developed a robot that harvests lettuce. Although the prototype named "Vegebot" is nowhere near as fast or efficient as a human worker, it can be considered an achievement in the agriculture robotics field, as described in a study published in the latest issue of The Journal of Field Robotics journal.

Crops such as potatoes and wheat have been harvested mechanically at scale for decades, but many other crops such as iceberg lettuce have to date resisted automation, for two reasons: they can be easily damaged and grow relatively flat to the ground, presenting a challenge for robotic harvesters. Yet, these two problems have been addressed with the new robot.

At the moment, harvesting is the only part of the lettuce life cycle that is done manually, and it's very physically demanding. The researchers also hope Vegebot will contribute to a reduction in costs.

The robot first identifies the 'target' crop within its field of vision, then determines whether particular lettuce is healthy and ready to be harvested, and finally cuts the lettuce from the rest of the plant without crushing it so that it is 'supermarket ready'.

The Vegebot has two main components: a computer vision system and a cutting system. The overhead camera on the Vegebot takes an image of the lettuce field and first identifies all the lettuces in the image, and then for each lettuce, classifies whether it should be harvested or not. Lettuce might be rejected because it's not yet mature, or it might have a disease that could spread to other lettuces in the harvest.

A second camera on the Vegebot is positioned near the cutting blade and helps ensure a smooth cut.

In an email he sent to Asharq Al-Awsat, co-author Josie Hughes admits that: "The robot is slower than human in lettuce harvesting. For a human, the entire process takes a couple of seconds, but it's a really challenging problem for a robot. However, reducing the dependency on humans may help shrink the expenditures, and that's why the new robot is considered economically efficient. "

"We've still got to speed our Vegebot up; however, we plan to market the prototype, which is still being tested before deploying it in fields."



A Cat named Leonardo da Pinchy Doesn’t Want your Affection. He Wants to Steal Your Underwear

In this photo provided by Helen North, Leo the laundry-stealing cat poses on July 24, 2024, at its home in Auckland, New Zealand. (Helen North via AP)
In this photo provided by Helen North, Leo the laundry-stealing cat poses on July 24, 2024, at its home in Auckland, New Zealand. (Helen North via AP)
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A Cat named Leonardo da Pinchy Doesn’t Want your Affection. He Wants to Steal Your Underwear

In this photo provided by Helen North, Leo the laundry-stealing cat poses on July 24, 2024, at its home in Auckland, New Zealand. (Helen North via AP)
In this photo provided by Helen North, Leo the laundry-stealing cat poses on July 24, 2024, at its home in Auckland, New Zealand. (Helen North via AP)

Most cat owners dread their pets bringing home mice or birds. But for the owners of one felonious feline in Auckland, New Zealand, there’s a worse shame — being the unwitting accomplice to an unstoppable one-cat crimewave.

His prolific laundry-pinching from clotheslines and bedrooms in the placid beachside neighborhood of Mairangi Bay has turned 15-month-old Leo into a local celebrity and earned him a new moniker. He now goes by Leonardo da Pinchy, The Associated Press said.

And he’s got expensive taste. His frequent hauls include silk boxer shorts, thick men’s work socks — preferably with clothespins still attached — and in one mortifying episode for his humans, a brand-new 300 New Zealand dollar ($181) cashmere sweater.

“My daughter was at home sick and she rang me at work saying, ’It’s bad, it’s bad, this is the worst thing he’s brought in, it’s really bad,” said Leo’s owner, Helen North. “Because it was beautiful. I was like, ‘Ooh, can I keep that?’ But I couldn’t.”

Instead, North turned to a neighborhood WhatsApp group to return Leo’s stolen goods to their rightful owners. Her usual message: “Are these your undies?”

But the pilfered stash kept piling up: socks (piles), underwear (loads) and even a 5-foot-long stuffed snake (bizarre). On one record-setting day, Leo returned with nine items, enough for a full outfit if you didn’t mind a mix of everything from baby clothes to menswear.

“He brought in a jersey this morning at 10 past 8,” North said. “The shops hadn’t even opened.”

With dozens of items unclaimed, the embarrassed owner took her search for Leo’s victims wider this month, posting photos of his hauls on a local Facebook page along with an apology and her address. Those who showed up to claim their belongings included a woman who recognized her pink and purple underpants and a boy whose beloved and missing sports jersey was helpfully identifiable by his name printed on the back.

The ire North expected over Leo's cat burgling antics didn’t eventuate — although one of his targets, who is allergic to cats, now dries her laundry indoors.

“All of our neighbors think he’s amazing,” she said. “Some of them are quite put out that he hasn’t actually stolen anything of theirs.”

Still, North has tried everything to curb her cat’s laundry obsession, from attempting to keep him indoors to leaving out clothes at home for him to steal. No luck.

“He only wants stuff that he shouldn’t have,” she said, adding that she was also unwilling to risk an online suggestion that Leo simply needed another playmate.

“He might teach another cat to do this,” North said.

Leo's life of crime began when he was first allowed outdoors a year ago. But his family hopes it’s just a juvenile phase.

“I hope he grows out of it because I don’t want to do this for like, 15 years,” North said. “This is a lot of admin.”

For now, on the streets of Mairangi Bay, Leonardo da Pinchy remains at large.