Professor Otmar Hilliges and his staff at ETH Zurich have developed a new app enabling users to operate their smartphone with gestures. This development expands the range of potential interactions with such devices.
It does seem slightly odd at first: you hold the phone in one hand, and move the other in the air above its built-in camera making gestures that resemble sign language. Sometimes you move your index finger to the left, sometimes to the right. You can spread out your fingers, or imitate a pair of pliers or the firing of a pistol. These gestures are not, however, intended for communicating with deaf people; they are for controlling your smartphone.
By mimicking the firing of a pistol, for example, a user can switch to another browser tab, change the map’s view from satellite to standard, or shoot down enemy planes in a game. Spreading out your fingers magnifies a section of a map or scrolls the page of a book forwards.
All this gesturing wizardry is made possible by a new type of algorithm developed by Jie Song, a Master’s student in the working group headed by by Otmar Hilliges, Professor of Computer Science. The researchers presented the app to an audience of industry professionals at the UIST symposium in Honolulu, Hawaii.
The program uses the smartphone’s built-in camera to register its environment. It does not evaluate depth or colour. The information it does register – the shape of the gesture, the parts of the hand – is reduced to a simple outline that is classified according to stored gestures. The program then executes the command associated with the gesture it observes. The program also recognises the hand’s distance from the camera and warns the user when the hand is either too close or too far away.
“Many movement-recognition programs need plenty of processor and memory power”, explains Hilliges, adding that their new algorithm uses a far smaller portion of computer memory and is thus ideal for smartphones. He believes the application is the first of its kind that can run on a smartphone. The app’s minimal processing footprint means it could also run on smart watches or in augmented-reality glasses.
The program currently recognises six different gestures and executes their corresponding commands. Although the researchers have tested 16 outlines, this is not the app’s theoretical limit. What matters is that gestures generate unambiguous outlines. Gestures that resemble others are not suitable for this application. “To expand its functionality, we’re going to add further classification schemes to the program”, says the ETH researcher.
He is convinced that this new way of operating smartphones greatly increases the range of interactivity. The researcher’s objective is to keep the gestures as simple as possible, so that users can operate their smartphone effortlessly.
But will smartphone users want to adapt to this new style of interaction? Otmar Hilliges is confident they will. Gesture control will not replace touchscreen control, but supplement it. “People got used to operating computer games with their movements.” Touchscreens, Hilliges reminds us, also required a very long adjustment period before making a big impact in consumers’ lives. He is therefore certain that this application – or at least parts of it – will find its way onto the market.
Song J, Sörös G, Pece F, Fanello S, Izadi S, Keskin C, Hilliges O: In-air Gestures Around Unmodified Mobile Devices, ACM User Interface Software and Technology Symposium, Honolulu, Hawaii, 7 October 2014
Otmar Hilliges | Eurek Alert!
Information integration and artificial intelligence for better diagnosis and therapy decisions
24.05.2017 | Fraunhofer MEVIS - Institut für Bildgestützte Medizin
World's thinnest hologram paves path to new 3-D world
18.05.2017 | RMIT University
Staphylococcus aureus is a feared pathogen (MRSA, multi-resistant S. aureus) due to frequent resistances against many antibiotics, especially in hospital infections. Researchers at the Paul-Ehrlich-Institut have identified immunological processes that prevent a successful immune response directed against the pathogenic agent. The delivery of bacterial proteins with RNA adjuvant or messenger RNA (mRNA) into immune cells allows the re-direction of the immune response towards an active defense against S. aureus. This could be of significant importance for the development of an effective vaccine. PLOS Pathogens has published these research results online on 25 May 2017.
Staphylococcus aureus (S. aureus) is a bacterium that colonizes by far more than half of the skin and the mucosa of adults, usually without causing infections....
Physicists from the University of Würzburg are capable of generating identical looking single light particles at the push of a button. Two new studies now demonstrate the potential this method holds.
The quantum computer has fuelled the imagination of scientists for decades: It is based on fundamentally different phenomena than a conventional computer....
An international team of physicists has monitored the scattering behaviour of electrons in a non-conducting material in real-time. Their insights could be beneficial for radiotherapy.
We can refer to electrons in non-conducting materials as ‘sluggish’. Typically, they remain fixed in a location, deep inside an atomic composite. It is hence...
Two-dimensional magnetic structures are regarded as a promising material for new types of data storage, since the magnetic properties of individual molecular building blocks can be investigated and modified. For the first time, researchers have now produced a wafer-thin ferrimagnet, in which molecules with different magnetic centers arrange themselves on a gold surface to form a checkerboard pattern. Scientists at the Swiss Nanoscience Institute at the University of Basel and the Paul Scherrer Institute published their findings in the journal Nature Communications.
Ferrimagnets are composed of two centers which are magnetized at different strengths and point in opposing directions. Two-dimensional, quasi-flat ferrimagnets...
An Australian-Chinese research team has created the world's thinnest hologram, paving the way towards the integration of 3D holography into everyday...
24.05.2017 | Event News
23.05.2017 | Event News
22.05.2017 | Event News
26.05.2017 | Life Sciences
26.05.2017 | Life Sciences
26.05.2017 | Physics and Astronomy