Archive for February 3rd, 2009

Digital imaging and information protection.

Tuesday, February 3rd, 2009 by Giuseppe Piersantelli

When we talk about “digital cameras”, most of us think at compact or reflex cameras or camera phones. But there are other digital imaging applications.

For instance, the largest market for digital cameras is the optical mouse market. And it’s not the only one: when we land in the US and get to the security check at the airport’s custom office, our fingerprints are scanned by custom officers.

Many laptop computers and PDAs feature a fingerprint scanner to turn on the device or access the information.

DCViews reports that Sony has presented a finger vein authentication technology called “mofiria”. The system features a CMOS sensor for fingerprint scanning and an infrared LED for vein pattern recognition.

The vein pattern is quickly and accurately extracted from the captured finger vein image without a fixed finger position, which makes it possible to promote this technology for mobile devices.

Samsung, Nikon and the end of the megapixel race.

Tuesday, February 3rd, 2009 by Giuseppe Piersantelli has just posted a very skeptical article about the announced 12 MP camera phone which will be released by Samsung at Mobile World Congress show in Barcelona in the next weeks.

Reportedly, “The resulting photographs will certainly be awful” because  the Korean manufacturer is “squeezing more and more photo-sensitive dots onto teeny-tiny chips, a recipe for noisy, low quality images with a perversely high file size”.

I haven’t had the opportunity to test this gadget yet so I prefer not to comment the article published on Wired. Thus, I am happy to read something very similar to what I wrote in my previous posts about CES2009. The author reports that Nikon people interviewed at CES “agreed that camera makers are sick of megapixels” while many consumers still think that the more megapixel the better.

But, according to professionals from Sony and Casion, small sensors have probably reached their resolution plateau (about 8-10 MP). Marketing guys will probably focus on other stuff, like computational photography and advanced tagging options.