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Daily Archives: August 28, 2020

Xiaomi’s under display camera tech is coming to phones next year

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Under-display cameras do a neat trick, allowing manufacturers to build all-screen phones without complex pop-up selfie cameras. Now, Xiaomi has unveiled its third-generation of under-display cameras and promised that the technology will be coming to the mass market “next year.”

Cameras that live under the screen present two problems: creating a dark “hole” on the display above the camera while making selfie photos look hazy and dull. Xiaomi said its third-generation tech can “perfectly disguise the front camera under the phone’s screen without ruining the edge-to-edge display effect.” In other words, you get a seamless full-screen display with nary a punch hole, cutout or other blemish in sight, while matching regular front cameras for photo quality.

Xiaomi developed its own pixel grid arrangement that allows light to pass through the gap area of sub-pixels. At the same time, each single pixel has a complete RGB subpixel layout with no sacrifice in pixel density. All of that means that the display pixel density above the camera is the same as elsewhere on the screen, showing the “same brightness, color gamut and color accuracy.” Xiaomi also optimized the camera algorithm, claiming it performs the same as conventional front cameras.

Source: Xiaomi’s under display camera tech is coming to phones next year | Engadget

Visa Unveils More Powerful AI Tool That Approves or Denies Card Transactions

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Visa Inc. said Wednesday it has developed a more advanced artificial intelligence system that can approve or decline credit and debit transactions on behalf of banks whose own networks are down.

The decision to approve or deny a transaction typically is made by the bank. But bank networks can crash because of natural disasters, buggy software or other reasons. Visa said its backup system will be available to banks who sign up for the service starting in October.

The technology is “an incredible first step in helping us reduce the impact of an outage,” said Rajat Taneja, president of technology for Visa. The financial services company is the largest U.S. card network, as measured both by the number of cards in circulation and by transactions.

The service, Smarter Stand-In Processing, uses a branch of AI called deep learning

[…]

Smarter STIP kicks in automatically if Visa’s network detects that the bank’s network is offline or unavailable.

The older version of STIP uses a rules-based machine learning model as the backup method to manage transactions for banks in the event of a network disruption. In this approach, Visa’s product team and the financial institution define the rules for the model to be able to determine whether a particular transaction should be approved.

“Although it was customized for different users, it was still not very precise,” said Carolina Barcenas, senior vice president and head of Visa Research.

Technologists don’t define rules for the Smarter STIP AI model. The new deep-learning model is more advanced because it is trained to sift through billions of data points of cardholder activity to define correlations on its own.

[…]

In tests, the deep-learning AI model was 95% accurate in mimicking the bank’s decision on whether to approve or decline a transaction, she said. The technology more than doubled the accuracy of the old method, according to the company. The two versions will continue to exist but the more advanced version will be available as a premium service for clients.

[…]

Source: Visa Unveils More Powerful AI Tool That Approves or Denies Card Transactions – WSJ

Powell’s says it won’t sell books on Amazon anymore: ‘We must take a stand’

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Powell’s Books says it won’t sell on Amazon anymore, declaring that the online retail giant undermines communities by siphoning business from the real world and replacing it with internet commerce.

“For too long, we have watched the detrimental impact of Amazon’s business on our communities and the independent bookselling world,” CEO Emily Powell wrote in a note to customers Wednesday.

“The vitality of our neighbors and neighborhoods depends on the ability of local businesses to thrive,” Powell wrote. “We will not participate in undermining that vitality.”

Portland-based Powell’s is among the world’s largest bookstores and is the city’s signature retailer. But it’s dwarfed by the inventory available through Amazon’s website.

So Powell’s, like many other retailers, supplements its business by listing its products on Amazon’s own site – and giving Amazon a share of each sale.

That puts smaller retailers at an obvious disadvantage, given that they’re depending on a much larger competitor for an important share of their sales. But many feel they have no choice but to list on Amazon given that company’s dominant market position online.

Seattle-based Amazon did not respond to a request for comment and Powell’s declined to elaborate on Wednesday’s statement. However, Emily Powell told CNBC that Amazon had been a “big sales generator” for the Portland bookstore.

“It was hard to give up, sort of like smoking,” she said. “We knew we shouldn’t be doing it, but, you know, we sort of needed it from a sales perspective to keep going. We couldn’t face the possibility of not having that sales channel.”

The pandemic changed the landscape, Powell said, with Amazon prioritizing cleaning supplies and other essential goods — slowing the shipment of books. Powell said its Amazon sales slowed so she decided to focus on the bookstore’s own website.

“We just decided to make that a permanent business choice,” Powell said.

Source: Powell’s says it won’t sell books on Amazon anymore: ‘We must take a stand’ – oregonlive.com