Sensor and Display Human Factors Based Design Constraints for Head Mounted and Tele-Operation Systems

Abstract

For mobile imaging systems in head mounted displays and tele-operation systems it is important to maximize the amount of visual information transmitted to the human visual system without exceeding its input capacity. This paper aims to describe the design constraints on the imager and display systems of head mounted devices and tele-operated systems based upon the capabilities of the human visual system. We also present the experimental results of methods to improve the amount of visual information conveyed to a user when trying to display a high dynamic range image on a low dynamic range display.

Gaze distance detection by binocular tracking for automatic zoom glasses

“…The ellipse fitting algorithm has high fitting accuracy on the edge of the pupil region, but the noise has a specific effect on the final result, and sometimes the eyelid region is recognized as the pupil, which can effectively improve the fitting impact by limiting the ratio of the long and minor axes of the ellipse to the ellipse area [see Fig. 8(b)]: 19 – 21 Ax2+Bxy+Cy2+Dx+Ey+F=0.…”

“…The ellipse fitting algorithm has high fitting accuracy on the edge of the pupil region, but the noise has a specific effect on the final result, and sometimes the eyelid region is recognized as the pupil, which can effectively improve the fitting impact by limiting the ratio of the long and minor axes of the ellipse to the ellipse area [see Fig. 8(b)]: [19][20][21] E Q -T A R G E T ; t e m p : i n t r a l i n k -; e 0 0 9 ; 1 1 7 ; 2 9 4 The segmented image has less noise and a significant gray difference between the Purkinje image and the pupil area, so it can be removed directly by Canny edge detection, improving image processing efficiency. The schematic diagram and results of the Purkinje image extraction method are shown in Fig.…”

Experimental Testing of Bandstop Wave Filter to Mitigate Wave Reflections in Bilateral Teleoperation

“…However, the presence of time delay in the communication channel connecting the master and remote robots threatens the quality of the force feedback provided in the bilateral teleoperation system. It was demonstrated in previous studies that the introduction of the modest time delay could cause the instability of a bilateral teleoperation system [19][20][21][22]. An example of a real-life application where the presence of time delay can be problematic is a teleoperated combat drone.…”

Effects of Resolution, Range, and Image Contrast on Target Acquisition Performance

“…Although static images are artificial, the use of dynamic video transforms target acquisition into a motion detection task, where resolution may not play such a big role. Other studies examining resolution requirements have also used static targets (Harrison, Mullins, & Etienne-Cummings, 2011;Schmieder & Weathersby, 1983;Teaney & Fanning, 2008;Vollmerhausen, Driggers, & Wilson, 2008). For these reasons, we created realistic static images using VBS2 with the virtual camera placed at different distances (ranges) from human targets.…”