Acquired Electronics360

Audio and Video

VIDEO: Control Your Smartwatch without Touching It

04 May 2017

A novel input method expands the input space to the back of the hand and the 3-D space above it. Source: Oliver DietzeA novel input method expands the input space to the back of the hand and the 3-D space above it. Source: Oliver DietzeFor anyone who owns a smart device, controlling it by pinches and spreads of the fingers on its screen is second-nature. But imagine if you could control it without actually touching it – by making the same finger movements on the back of your hand, or even in the empty space above it.

That’s the idea behind the novel technology developed by a team of researchers from the Max Planck Institute for Informatics in Germany, the University of Copenhagen and Aalto University in Helsinki. The researchers’ prototype, dubbed “WatchSense,” employs a depth sensor not unlike the Kinect game controller from an Xbox 360 – albeit much smaller. The sensor is worn on the user’s forearm, about 20 centimeters from a smartwatch. It works like a 3-D camera to capture and recognize movements in space, allowing for more expressive interactions than previous sensing devices could process.

One challenge the research team needed to solve was distinguishing between the thumb and index finger, which can occlude one another as they are moved within space. They trained their software system to recognize exact positions through machine learning. ”The most important thing is that we can not only recognize the fingers, but also distinguish between them," said researcher Srinath Sridhar, "which nobody else had managed to do before in a wearable form factor. We can now do this even in real time."

The technology also has been demonstrated with other touch-sensitive devices such as smartphones, smart TVs and augmented/virtual reality devices. Eventually, the researchers believe, depth sensors will be able to be made small enough to be integrated directly into a smartwatch itself. "We need something like WatchSense whenever we want to be productive while moving,” says Sridhar. “WatchSense is the first to enable expressive input for devices while on the move."



Powered by CR4, the Engineering Community

Discussion – 0 comments

By posting a comment you confirm that you have read and accept our Posting Rules and Terms of Use.
Engineering Newsletter Signup
Get the Engineering360
Stay up to date on:
Features the top stories, latest news, charts, insights and more on the end-to-end electronics value chain.
Advertisement
Weekly Newsletter
Get news, research, and analysis
on the Electronics industry in your
inbox every week - for FREE
Sign up for our FREE eNewsletter
Advertisement

CALENDAR OF EVENTS

Date Event Location
30 Nov-01 Dec 2017 Helsinki, Finland
23-27 Apr 2018 Oklahoma City, Oklahoma
18-22 Jun 2018 Honolulu, Hawaii
Find Free Electronics Datasheets
Advertisement