Skip to Content
Uncategorized

Unpacking Pixels

A new bandwidth-conserving technique transmits different parts of a digital image separately, at different resolutions.

Until Internet connections have infinite bandwidth, big digital files like color images will have to be compressed-which means a loss of detail. But Xerox researcher Robert R. Buckley has come up with a way to compress and transmit different parts of a digital image separately. People viewing the image online could conserve bandwidth by starting with a low-resolution preview but could selectively download portions of the image at higher resolution, showing specific details such as text or a face. Buckley’s technique, which is part of the industry’s new image compression standard, divides elements such as text and pictures into separate groups, each of which is saved using the best-suited compression method. (Text, for instance, needs to retain its sharp edges, while many photos don’t.) The groups can then be downloaded individually, on demand. Xerox plans to license the concept royalty-free to companies developing image-editing software.

Keep Reading

Most Popular

Here’s how a Twitter engineer says it will break in the coming weeks

One insider says the company’s current staffing isn’t able to sustain the platform.

Technology that lets us “speak” to our dead relatives has arrived. Are we ready?

Digital clones of the people we love could forever change how we grieve.

How to befriend a crow

I watched a bunch of crows on TikTok and now I'm trying to connect with some local birds.

Starlink signals can be reverse-engineered to work like GPS—whether SpaceX likes it or not

Elon said no thanks to using his mega-constellation for navigation. Researchers went ahead anyway.

Stay connected

Illustration by Rose Wong

Get the latest updates from
MIT Technology Review

Discover special offers, top stories, upcoming events, and more.

Thank you for submitting your email!

Explore more newsletters

It looks like something went wrong.

We’re having trouble saving your preferences. Try refreshing this page and updating them one more time. If you continue to get this message, reach out to us at customer-service@technologyreview.com with a list of newsletters you’d like to receive.