Abstract
This study proposes a novel binocular pupil and gaze detection system utilizing a remote full high definition (full HD) camera and employing LabVIEW. LabVIEW is inherently parallel and has fewer time-consuming algorithms. Many eye tracker applications are monocular and use low resolution cameras due to real-time image processing difficulties. We utilized the computer’s direct access memory channel for rapid data transmission and processed full HD images with LabVIEW. Full HD images make easier determinations of center coordinates/sizes of pupil and corneal reflection. We modified the camera so that the camera sensor passed only infrared (IR) images. Glints were taken as reference points for region of interest (ROI) area selection of the eye region in the face image. A morphologic filter was applied for erosion of noise, and a weighted average technique was used for center detection. To test system accuracy with 11 participants, we produced a visual stimulus set up to analyze each eye’s movement. Nonlinear mapping function was utilized for gaze estimation. Pupil size, pupil position, glint position and gaze point coordinates were obtained with free natural head movements in our system. This system also works at 2046 × 1086 resolution at 40 frames per second. It is assumed that 280 frames per second for 640 × 480 pixel images is the case. Experimental results show that the average gaze detection error for 11 participants was 0.76° for the left eye, 0.89° for right eye and 0.83° for the mean of two eyes.
Highlights
Nowadays, human senses and anatomical features are used in various applications
The accuracy of our system is to less than one degree, which is a good level for single camera-based binocular systems. We developed this system by employing the LabVIEW program which is inherently parallel and has less time-consuming image processing algorithms
We proposed a new binocular full high definition (full HD) resolution eye gaze tracking system using
Summary
Human senses and anatomical features are used in various applications. As a matter of fact, these inputs are essential for increasing the reliability of above-mentioned systems. Among these movements, eye movement is the most popular because of its crucial role in transmitting huge environmental data to the brain. Where we place and how we move our gaze is associated with what we pay attention to [3]. In this regard, the significance of visual information and information evaluators is growing
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