How Tobii Dynavox eye tracking works

Summary

Tobii Dynavox eye trackers use advanced technology to allow users to control computers with their eyes, eliminating the need for a traditional mouse or keyboard. The system tracks eye movement by emitting near-infrared light and analyzing reflections from the eyes. Tobii's unique 3D eye model allows for accurate tracking even with head movement, making it ideal for users with conditions like cerebral palsy. The trackers dynamically switch between bright and dark pupil tracking for optimal accuracy. Learn more about these innovative features at www.tobiidynavox.com.

Takeaways

• 👁️ Eye tracking technology monitors where a person is looking on a computer screen.
• 🖥️ This technology can also be used to control a computer without a traditional keyboard or mouse.
• 🔆 The system works by sending near-infrared light from illuminators, which is reflected by the eyes and registered by a camera.
• 📍 Through advanced filtering and calculations, the eye tracker determines where the user is looking and positions the cursor accordingly.
• 🔬 Tobii Dynavox eye trackers utilize a unique and accurate 3D model of the human eye, enabling head movement without losing precision.
• 🧑‍🦽 This feature is particularly useful for people with conditions like cerebral palsy, who may have uncontrolled head movements.
• 🎯 For precise tracking, the system locates the user's pupils using either bright or dark pupil tracking methods.
• 📸 Bright pupil tracking is similar to the red-eye effect in flash photography, while dark pupil tracking avoids it by changing the illuminator's position.
• ✨ Tobii Dynavox eye trackers can automatically switch between bright and dark pupil tracking for an optimized experience.
• 🌐 Tobii Dynavox offers many unique features in their eye tracking systems, and more information is available on their website.

Q & A

What is eye tracking technology used for?

Eye tracking technology is used to determine where a person is looking on a computer screen and can also be used to control the computer using the eyes instead of traditional input methods like a keyboard and mouse.

How does an eye tracker work?

An eye tracker uses illuminators to send out near-infrared light, which reflects off the eyes. A camera captures these reflections, and through filtering and advanced calculations, the system determines where on the screen the user is looking, allowing precise cursor control.

What is unique about Tobii Dynavox eye trackers compared to others?

Tobii Dynavox eye trackers are unique due to their use of a highly accurate 3D model of the human eye, allowing users to move their heads freely without losing precision. This feature is particularly beneficial for individuals with conditions like cerebral palsy.

Why is head movement not a problem when using Tobii Dynavox eye trackers?

Tobii Dynavox eye trackers can accommodate head movement thanks to their accurate 3D model of the human eye, which ensures precise tracking even if the user moves their head.

Who benefits the most from Tobii Dynavox eye trackers?

Individuals with uncontrolled head movement, such as those with cerebral palsy, benefit significantly from Tobii Dynavox eye trackers, as they allow free head movement without sacrificing accuracy.

What is the difference between bright and dark pupil tracking?

Bright pupil tracking creates a red-eye effect similar to when using a camera flash, while dark pupil tracking avoids this effect by positioning the illuminators farther from the lens. Tobii Dynavox eye trackers dynamically switch between the two for optimal tracking.

How do Tobii Dynavox eye trackers ensure optimized eye tracking?

Tobii Dynavox eye trackers dynamically switch between bright and dark pupil tracking to provide an optimized eye tracking experience based on the current lighting conditions and user needs.

What role do illuminators play in eye tracking?

Illuminators emit near-infrared light that reflects off the user's eyes, which is then captured by a camera. These reflections are used to calculate where the user is looking on the screen.

Why is the 3D model of the eye important in Tobii Dynavox eye trackers?

The 3D model allows for accurate tracking even with head movement, which enhances usability for individuals who cannot keep their heads still.

Where can someone learn more about Tobii Dynavox eye trackers?

For more information on Tobii Dynavox eye trackers, you can visit the official website at www.tobiidynavox.com.

Outlines

00:00

👁️ Introduction to Eye Tracking Technology

Eye tracking is a technology that monitors where a person is looking on a computer screen. It can also be used to control the computer through eye movement instead of traditional input devices like a keyboard and mouse. The system works by using illuminators in the eye tracker that emit near-infrared light, which reflects off the eyes. A camera captures these reflections, and through advanced calculations, the system accurately tracks where the user is looking on the screen and positions the cursor accordingly.

💡 Tobii Dynavox's Unique Eye Tracking Features

Tobii Dynavox eye trackers stand out due to several unique features. In addition to their extensive patent portfolio, they use a highly accurate 3D model of the human eye, which allows for precise tracking even when the user moves their head. This feature is particularly beneficial for individuals with conditions like cerebral palsy, where head movement may be uncontrolled. Unlike many eye trackers that require the user to stay still, Tobii's technology allows for head movement without losing accuracy.

🔦 Pupil Tracking: Bright vs. Dark Modes

Eye trackers need to find the user's pupils to work accurately, and Tobii Dynavox trackers can switch dynamically between two methods: bright and dark pupil tracking. Bright pupil tracking is similar to the red-eye effect in flash photography, while dark pupil tracking avoids this effect by positioning the illuminators further from the camera lens. Tobii's trackers automatically alternate between the two methods to ensure the best possible tracking experience, depending on the user's environment.

🌐 Learn More About Tobii Dynavox Eye Trackers

Tobii Dynavox eye trackers incorporate many advanced technologies that differentiate them from other systems. These features ensure a seamless and optimized eye-tracking experience, adaptable to various users' needs. For more detailed information about these unique capabilities and technologies, users are encouraged to visit their official website at www.tobiidynavox.com.

Keywords

💡Eye tracking

Eye tracking is a technology used to monitor where a person is looking on a screen. In the context of the video, it is explained as a method for controlling a computer without traditional input devices like a keyboard or mouse. This technology allows users to interact with computers using only their eye movements.

💡Infrared light

Infrared light is a type of light that is invisible to the human eye but is used in eye tracking systems. In this video, illuminators send out near-infrared light, which reflects off the user’s eyes. The reflections are captured by a camera to track the user's gaze.

💡Tobii Dynavox

Tobii Dynavox is a brand known for its eye-tracking technology. The video highlights that Tobii Dynavox trackers are unique because of their use of a 3D model of the human eye, allowing users to move their heads freely without losing tracking accuracy. This is beneficial for individuals with conditions like cerebral palsy.

💡3D model of the human eye

The 3D model of the human eye is a key feature of Tobii Dynavox eye trackers. This model helps the system to track the user’s eye movements even when their head is moving. This feature is particularly helpful for people with disabilities that affect head control, ensuring consistent eye tracking.

💡Pupil tracking

Pupil tracking refers to the process of identifying and following the user's pupils to determine their gaze direction. The video mentions two types of pupil tracking: bright and dark pupil tracking, both of which are used to ensure accurate eye-tracking performance.

💡Bright pupil tracking

Bright pupil tracking works similarly to the red-eye effect seen in photographs. In this technique, infrared light is shone directly into the eyes, causing the pupil to reflect light, which helps the system track eye movements. Tobii Dynavox eye trackers can switch between bright and dark pupil tracking depending on the situation.

💡Dark pupil tracking

Dark pupil tracking is another method of following eye movements, which avoids the red-eye effect by placing the light source further away from the camera lens. This method is used dynamically by Tobii Dynavox systems to optimize tracking under different conditions.

💡Head movement tolerance

Head movement tolerance refers to the ability of Tobii Dynavox eye trackers to maintain tracking accuracy even when the user’s head is moving. This is a significant feature for users with motor disabilities, as it allows for freedom of movement without compromising performance.

💡Cerebral palsy

Cerebral palsy is a neurological condition that affects motor skills, often leading to uncontrolled head movements. The video highlights that Tobii Dynavox eye trackers are especially beneficial for people with cerebral palsy, as they allow for precise eye control even with significant head movements.

💡Computer control

Computer control refers to the use of eye-tracking technology to replace traditional input devices like the mouse or keyboard. In the video, it is explained that users can control a computer using only their eyes, offering a hands-free way to interact with technology.

Highlights

Eye tracking technology allows users to see where a person is looking on a computer screen.

Eye tracking can be used to control the computer, replacing traditional keyboard and mouse input.

Users control the computer with their eyes, utilizing near infrared light and camera reflection detection.

Advanced filtering and calculations place the computer cursor accurately where the user is looking.

Tobii Dynavox eye trackers use a unique and highly accurate 3D model of the human eye.

Users can move their heads freely without losing precision or accuracy, a key feature for those with conditions like cerebral palsy.

Accurate tracking requires the eye tracker to detect the user's pupils.

Tobii Dynavox offers both bright and dark pupil tracking to ensure accurate detection.

Bright pupil tracking mimics the red-eye effect in flash photography but can be avoided by positioning illuminators away from the lens.

Dark pupil tracking avoids the red-eye effect by placing illuminators farther from the lens.

Tobii Dynavox trackers dynamically switch between bright and dark pupil tracking for an optimized experience.

The combination of dynamic pupil tracking ensures optimal tracking for all users regardless of environmental lighting.

Tobii Dynavox eye trackers are designed for individuals with uncontrolled head movements, enhancing accessibility.

Tobii Dynavox boasts a unique patent portfolio and technical details that set it apart from other eye trackers.

For more information, users are encouraged to visit www.tobiidynavox.com.

Transcripts

Eye tracking is a technology that is used to see where a person is looking on a computer screen.

The technology can also be used to control the computer.

Instead of using a traditional keyboard and mouse, you control it by using your eyes.

Illuminators in the eye tracker send out near infrared light that is reflected by your eyes

A camera registers these reflections and through filtering and advanced calculations

we can determine where on the screen you are looking,

and and then place the computer cursor consistently and accurately.

There are certain things that set Tobii Dynavox eye trackers apart from others

Besides an unprecedented patent portfolio and many technical details,

one is the fact that we use a unique and very accurate 3d model of the human eye.

With this model you don't need to keep your head still when using a Tobii eye tracker.

In fact, you can move your head freely without any significant loss of precision or accuracy.

This is particularly beneficial for individuals with uncontrolled head movement,

such as those with cerebral palsy.

For accurate tracking the eye tracker needs to find your pupils.

This can be done through either bright or dark pupil tracking.

Bright pupil tracking works similarly to when you get red eyes using a compact camera with a flash.

By placing the flash, or in this case the illuminators, farther away from the lens you can avoid this.

This is dark pupil tracking.

Tobii Dynavox eye trackers are unique in that they dynamically switch between bright and dark pupil tracking,

so you'll always have an optimized eye tracking experience.

There are many other things that make Tobii Dynavox eye trackers is unique,

to learn more please visit www.tobiidynavox.com