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sniff out secrets
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How
do you tell if a digital image contains a
hidden message? Start by looking at a lot
of unadulterated image files to find out what
they have in common. After that, pictures
with more than meets the eye should stand
out, statistically speaking.
Full
story |
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Quantum
bit withstands noise
The nemesis of quantum computing is stray energy
from the environment. One type of quantum bit uses
this environmental noise to give itself a little
peace and quiet.
Image
search sorts by content
If you want to search for images that match one
you have, you need to use pattern recognition software.
Trouble is, to a computer a satellite photograph
can look a lot like an image of bacteria or a Jackson
Pollock painting. Limiting the search to, say, green
landscape photographs can help.
Study
finds Web quality time
We've finally gotten past the notion that surfing
the Web makes for depressed loners. Now some researchers
want to know about your working relationship with
the Internet. Do you feel like you get much done?
Does it feel good doing it?
Powerless
memory gains time
A little materials engineering could go long way
toward making disk drives obsolete. The goal is
to make a cousin of the flash memory used in your
digital camera but one hardy enough to handle your
computer.
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