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10 March 2020 | Story Rulanzen Martin | Photo Victor Sguassero (kykNET)
Chris Vorster
Chris was on stage in 'Die Hart Verklap' at the Toyota US Woordfees in Stellenbosch recently.

“Difficult and very strange,” is how Chris Vorster, veteran actor and Drama lecturer at the University of the Free State (UFS) describes his role as Bas Koorts in the supernatural thriller Die Spreeus

For Chris, the biggest challenge during the filming of Die Spreeus was to work in front of a green screen. “You never see the monsters and things attacking you, it is only added later on during the editing process,” he said. Therefore, he and his co-actors were expected to use their own imagination “to be frightened, and to duck and dive from something that does not exist.” 

This Afrikaans thriller series has recently been nominated in five categories of the South African Film and Television Awards, including Best Television Drama, Best Cinematography, and Original Sound and Sound Editing. 

Chris was also nominated for a Fiësta award in 2019 for his one-man performance in the theatre production, Die Hart verklap. “It is fantastic to still be recognised for my work,” he said, “but I also have to give recognition to Dion van Niekerk, because without a good director, any actor will be lost.” Van Niekerk also lectures Drama at the UFS.

Being a lecturer broadens his knowledge 

Chris joined the UFS Department of Drama and Theatre Arts in 2015 as lecturer in the programme for Film en Visual Media. “Everything I learn in the industry I apply as lecturer, and research and teaching feed more knowledge on acting, directing, and especially writing,” he said. After five years, being involved with the UFS Department of Drama is still exciting to him. “This is where both lecturers and students get encouraged to do more than just breathing.” 

With his busy schedule of teaching and acting, it remains important to him that South Africans are still able to tell stories – “in any language”. He considers it a privilege for anyone to work in their mother tongue. This is also why the symbiosis between his work as actor and lecturer is so appealing.

News Archive

Eye tracker device a first in Africa
2013-07-31

 

 31 July 2013

Keeping an eye on empowerment

"If we can see what you see, we can think what you think."

Eye-tracking used to be one of those fabulous science-fiction inventions, along with Superman-like bionic ability. Could you really use the movement of your eyes to read people's minds? Or drive your car? Or transfix your enemy with a laser-beam?

Well, actually, yes, you can (apart, perhaps, from the laser beam… ). An eye tracker is not something from science fiction; it actually exists, and is widely used around the world for a number of purposes.

Simply put, an eye tracker is a device for measuring eye positions and eye movement. Its most obvious use is in marketing, to find out what people are looking at (when they see an advertisement, for instance, or when they are wandering along a supermarket aisle). The eye tracker measures where people look first, what attracts their attention, and what they look at the longest. It is used extensively in developed countries to predict consumer behaviour, based on what – literally – catches the eye.

On a more serious level, psychologists, therapists and educators can also use this device for a number of applications, such as analysis and education. And – most excitingly – eye tracking can be used by disabled people to use a computer and thereby operate a number of devices and machines. Impaired or disabled people can use eye tracking to get a whole new lease on life.

In South Africa and other developing countries, however, eye tracking is not widely used. Even though off-the-shelf webcams and open-source software can be obtained extremely cheaply, they are complex to use and the quality cannot be guaranteed. Specialist high-quality eye-tracking devices have to be imported, and they are extremely expensive – or rather – they used to be. Not anymore.

The Department of Computer Science and Informatics (CSI) at the University of the Free State has succeeded in developing a high-quality eye tracker at a fraction of the cost of the imported devices. Along with the hardware, the department has also developed specialised software for a number of applications. These would be useful for graphic designers, marketers, analysts, cognitive psychologists, language specialists, ophthalmologists, radiographers, occupational and speech therapists, and people with disabilities. In the not-too-distant future, even fleet owners and drivers would be able to use this technology.

"The research team at CSI has many years of eye-tracking experience," says team leader Prof Pieter Blignaut, "both with the technical aspect as well as the practical aspect. We also provide a multi-dimensional service to clients that includes the equipment, training and support. We even provide feedback to users.

"We have a basic desktop model available that can be used for research, and can be adapted so that people can interact with a computer. It will be possible in future to design a device that would be able to operate a wheelchair. We are working on a model incorporated into a pair of glasses which will provide gaze analysis for people in their natural surroundings, for instance when driving a vehicle.

"Up till now, the imported models have been too expensive," he continues. "But with our system, the technology is now within reach for anyone who needs it. This could lead to economic expansion and job creation."

The University of the Free State is the first manufacturer of eye-tracking devices in Africa, and Blignaut hopes that the project will contribute to nation-building and empowerment.

"The biggest advantage is that we now have a local manufacturer providing a quality product with local training and support."

In an eye-tracking device, a tiny infra-red light shines on the eye and causes a reflection which is picked up by a high-resolution camera. Every eye movement causes a change in the reflection, which is then mapped. Infra-red light is not harmful to the eye and is not even noticed. Eye movement is then completely natural.

Based on eye movements, a researcher can study cognitive patterns, driver behaviour, attention spans, even thinking patterns. A disabled person could use their eye-movements to interact with a computer, with future technology (still in development) that would enable that computer to control a wheelchair or operate machinery.

The UFS recently initiated the foundation of an eye-tracking interest group for South Africa (ETSA) and sponsor a biennial-eye tracking conference. Their website can be found at www.eyetrackingsa.co.za.

“Eye tracking is an amazing tool for empowerment and development in Africa, “ says Blignaut, “but it is not used as much as it should be, because it is seen as too expensive. We are trying to bring this technology within the reach of anyone and everyone who needs it.”

Issued by: Lacea Loader
Director: Strategic Communication

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