Archive for the ‘Hardware’ Category

For your eyes only…

Friday, May 28th, 2010

We have just started a thesis project to investigate the possibility to integrate Tobii eye tracking technology with SenseGraphics H3DAPI and SenseGraphics Display solutions. Tobii, a company in Sweden, has been very successful in bringing their eye tracking products to the market, not only for assistive and research use but also in outstanding eye-tracking solutions for market research and usability studies/analysis. In just a couple of years they’ve grown from a small start-up to a company employing well over 200 people, all over the world!

Tobii stand alone tracker

The Tobii eye tracking technology has some advantages to competitors solutions; fully automatic eye tracking, very high accuracy with the ability to track nearly all people with good tolerances on head motions.

The thesis work includes hardware integration of eye tracking for use in SenseGraphics “immersive workbench” solutions. As we are using real stereo 3D in our setups, there is a great challenge to overcome the problem of 3D glasses blocking lights. Tobii is using advanced image processing of a person’s face and eyes and reflections in the eyes of infrared reference lights to estimate eye position and precise “gaze target”. The thesis project will investigate some possible solutions and hopefully we’re able to present a working prototype later this year…!?

The combination of eye tracking and use of haptics in real 3D stereo interactive environments would allow for some very interesting research possibilities in for example neuroscience. Hopefully our H3DAPI users will “soon” gain access to users gaze and eye position data for further research application development in SenseGraphics Display solutions…

SenseGraphics is launching SGD3

Tuesday, September 22nd, 2009

SenseGraphics is currently at the MICCAI conference in London showing their newly developed SenseGraphics Display SGD3. This seams to be the first 120 HZ LCD based Immersive Workbench available on the market.

Think about adding dual haptics with gripping interface to this setup and voila you will have the perfect environment to develop a robotic medical simulator for your own Da Vinci robotics.

Special price on the SensAble Omni haptics!

Tuesday, January 27th, 2009

Just click on the banner to learn more about this time-limited offer on the SensAble Omni haptic device!

Special time limited offer in the SensAble Omni haptic device

Update: The offer period is over. Send an email to sales@sensegraphics.com should you have any inquiries about the product.

Ergonomical study of using the Novint Falcon

Thursday, December 18th, 2008

Today we joined a class session at the Royal Institute of Technology. It was the final day in a design course focusing on ergonomics.

In one of the project group the Novint Falcon game haptics device was chosen. The Falcon group had identified a problem when using the gaming device for longer gaming session. Already after some minutes of use the test group felt pain in their under arms and shoulders. Although there are recommendations in the manual like; for one hours of gaming you should rest 15 minutes, use the arm chair as a resting place for your arm while playing games… it is really limiting for a hard core gamers to restrict the “never want to end” playing games using this cool device.

Concepts for the Novint Falcon handle

The test users claim they feel pain in the under arm and shoulders on specific muscles. To really prove this is the case, the project group used EMG measurement to get an understanding for the kind of stress the muscles are exposed to. The group then did literature studies to find out what recommended arm and hand positions there are, in theory, for this or similar kind of use. From this study and the previous conclusions on the user test they brought up some new concepts on handles developed  and redesigned using the “JACK analysis” method (including force analysis). The group then manufactured new prototype handles which then was mounted on the Novint Falcon for new user test and EMG analysis. The final EMG analysis proved their new concepts being succesful in reducing the stress factor, especially on the under arm muscles.

Improved stress curves for the new concepts

If you would like to have a copy of the presentation please mail us!

Real LCD 3D stereo in full resolution

Monday, April 21st, 2008

Yet another 3D display is beeing tested at SenseGraphics office.

This time were looking at the Planar display which is using two separate LCD displays, one for the left eye and one for the right eye, for producing real 3D stereo content. Both displays are then “co-located” to the same viewing focal plane by using a mirror which is polarised. Each display picture is then “coded” to each eye as the user is wearing light plastic and passive stereo glassess. The display, which major advantage is full LCD display resolution in real stereo 3D, has been on the market for some years and has been very successfull in the geo-science market area.

Simball technology

Tuesday, April 15th, 2008

This week we got our hands on a new device which originally was developed for the medical simulation industry. It’s kind of a laporascopic device from a company in Sweden called G-coder: www.g-coder.com . The device itself is using a camera technology to record, very precisely,  the movements of a ball (the product is called Simball) to which the actual lap device tool handle is connected.  G-coder hopes to develop its technology far beyond the medical lap-sim industry and are targeting also the rehab industry. The product will be further broadcasted at the “Visualiseringsdagarna” in Gothenburg 20-21st of April hopefully, by then, monitoring some H3DAPI content… http://www.center-of-visualization.org/index.html