In this paper, a novel approach for real-time heatmap generation and visualization of 3D gaze data is presented. By projecting the gaze into the scene and considering occlusions from the observer's view, to our knowledge, for the first time a correct visualization of the actual scene perception in 3D environments is provided. Based on a graphics-centric approach utilizing the graphics pipeline, shaders and several optimization techniques, heatmap rendering is fast enough for an interactive online and offline gaze analysis of thousands of gaze samples
This paper presents a system for real-time analysis of 3D gaze data arising in mobile applications. Our system allows users to freely move in a known 3D environment while their gaze is computed on arbitrarily shaped objects. The scanpath is analysed fully automatically using fixations and areas-of-interest - all in 3D and real time. Furthermore, the scanpath can be visualized in parallel in a 3D model of the environment. This enables to observe the scanning behaviour of a subject. We describe how this has been realized for a commercial off-the-shelf mobile eye tracker utilizing an inside-out tracking mechanism for head pose estimation. Moreover, we show examples of real gaze data collected in a museum
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