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Optoelectronics/Displays??

Camera phone: From birth to how it transformed the world

Posted: 05 Nov 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Panasonic? smartphone? camera? sensor? cellular network?

Envisioneering Group's Doherty said, when he first saw the camera phone, "I immediately thought individual privacy was now gone. I was right. In Japan of course, using a camera phone was accompanied by a clicking shutter sound. Not so in other countries."

Camera phone as a sensing device

If smartphones vendors insist on sticking to the megapixel CMOS image sensor battle for their camera phones, they could run the risk of missing emerging applications in which a camera phone is used as an interactive computer vision device.

One example is the use of a camera phone to scan QR Codes. A phone can sense QR Codes using its camera and provide a link to related digital content, usually a URL.

Phone as sensing device

(Source: BreathalEyes)

The growing computing power in a smartphone is also making it possible to shift the camera phone's focus from image capturing to vision processing. Instead of racing for more mega pixels, some applications are now looking for how fast and how accurately a processor in the smartphone can capture, dissect, and interpret data in a manner comprehensible to smartphones.

Consider the use of smartphone as breathalysers. The application appeared first on the market in 2012.

BreathalEyes determines blood alcohol content using an iPhone. BreathalEyes scans the user's eyes to measure the presence of Horizontal Gaze Nystagmus (HGN), an involuntary jerking or bouncing of the eyeball. For this iPhone-turned-breathalyser, all you need is an iPhone camera and a 99-cent BreathalEyes app.

Augmented reality (AR) also promises to be fertile ground for smartphones. Take an example of AR browser. The browser uses the mobile phone's sensor data (i.e. camera, GPS, digital compass, etc.) to identify the user's location and field of view. By using the geographical position, various layers of data can be inserted over the camera view.

- Junko Yoshida
??EE Times


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