motion tracking camera software logitech

#Motion tracking camera software logitech plus#

Our advice: When it comes to eye trackers it‘s absolutely worth spending a bit extra money if you‘re aiming for high-quality results (which you should). Which camera is integrated into the eye tracker? Avoid eye trackers that integrate ordinary low-resolution webcams and use no infrared light.Įven though they appear to be a good bargain and the ideal solution for smaller budget, the lack of a controlled light source along with a rather weak camera performance will render your data quality effectively useless.Before your purchase, think about these key questions that can make or break your research: Key questions to ask for eye tracking research Eye tracking camera Once you have clarified which kind of tracking system suits your study design, it’s time to read the fine-print. Do your respondents need to move freely in a natural setting or virtual reality? Choose a head-mounted system that allows for head and body mobility.Ĭheck out: What’s the Best Eye Tracker for Your Research?.Will your respondents be seated in front of a computer during the session? Go for a screen-based eye tracker.Which recording device should you go for? Start with the obvious: Amidst all the manufacturer specifications, it can be quite hard to keep an overview and evaluate which eye tracker is right for your research endeavor. When to Choose Screen-Based Eye Tracking or Eye Tracking GlassesĮye tracking devices are continuously being produced and launched onto the market.

On the downside, the glasses could potentially shift during the recording if there is a large amount of movement (such as within sports).

#Motion tracking camera software logitech plus#

Clearly, this is a plus if your study design requires performing tasks in a natural environment.

Eye tracking glasses (which are also known under the term head-mounted)Īs the name implies, mobile devices are fitted near the eyes (usually mounted onto eyeglass frames) and allow respondents to move freely.

Although these devices track the eyes only within certain limits (the so-called headbox), the freedom of movement is still sufficiently large for respondents to be relatively unrestricted (at least in terms of a normal range of movement while watching screen-based stimuli). Screen-based devices require respondents to sit in front of a monitor and interact with screen-based content.

Screen-based eye trackers (which are also called desktop, stationary or remote).

Let’s have a look at the key features of each: Screen-based eye trackers They are used across variety of fields and research areas, but how they are used and the data they provide as a result can differ. While there are many different eye trackers, there are two principal types: screen-based and glasses. The relative difference in location of the pupil center and corneal reflection allows for deduction of the gaze direction.Ģ Types of Eye Tracking: Screen-Based Eye Tracking and Eye Tracking Glasses Additionally, as infrared light is not visible to humans it doesn’t cause any distraction while the eyes are being tracked. Light from the visible spectrum is likely to generate uncontrolled specular reflection, while infrared light allows for a precise differentiation between the pupil and the iris – while the light directly enters the pupil, it just “bounces off” the iris. The relative distance between the two areas allows the calculation of the direction of the gaze. The center of the eye (pupil center) is tracked in relation to the position of the corneal reflection. Normal light sources (with ordinary cameras) aren’t able to provide as much contrast, meaning that an appropriate amount of accuracy is much harder to achieve without infrared light. This is the optical tracking of corneal reflections, known as pupil center corneal reflection (PCCR).Īn infrared light source (and thus detection method) is necessary as the accuracy of gaze direction measurement is dependent on a clear demarcation (and detection) of the pupil as well as the detection of corneal reflection. These reflections – the vector between the cornea and the pupil – are tracked by an infrared camera. Near-infrared light is directed towards the center of the eyes (pupil), causing detectable reflections in both the pupil and the cornea (the outer-most optical element of the eye). These measurements are carried out by an eye tracker, that records the position of the eyes and the movements they make.

Eye tracking refers to the process of measuring where we look, also known as our point of gaze.