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A list of all the posts and pages found on the site. For you robots out there is an XML version available for digesting as well.
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Posts
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Blog Post number 1
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portfolio
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publications
Flick Gesture Interaction in Augmented Reality: AR Carrom
Published in UIST, 2021
Gestural input can make augmented reality applications feel natural and intuitive. While gestures used as simple input controls are common, gestures that interact directly with the virtual objects are less so. These interaction gestures pose additional challenges since they require the application to make many interpretations about the hand in the camera’s field of view such as depth, occlusion, size, and motion. In this work, we describe and propose a flick gesture control mechanic that estimates force and direction from a baseline pinch gesture. We demonstrate the gesture through an example implementation of an AR version of a game called Carrom in which we use our flick mechanic to dynamically interact with the virtual Carrom striker.
Recommended citation: Apurv Varshney, Justin Nilsen, Richa Wadaskar, and Misha Sra. 2021. Flick Gesture Interaction in Augmented Reality: AR Carrom. The Adjunct Publication of the 34th Annual ACM Symposium on User Interface Software and Technology. Association for Computing Machinery, New York, NY, USA, 60–62. https://dl.acm.org/doi/10.1145/3474349.3480229
Visual Navigation under High-Stress Conditions
Published in VSS, 2023
There are known individual differences in both the ability to learn the layout of novel environments and the flexibility of strategies for navigating known environments. However, it is unclear how navigational abilities are impacted by high-stress scenarios. Here we used immersive virtual reality (VR) to develop a novel behavioral paradigm to examine navigation under dynamically changing situations. We recruited 47 participants (24 male, 23 female; ages 17-32) to navigate a virtual maze (7.5m x 7.5m) using a wireless HTC VIVE Pro Eye head-mounted display. We first had participants learn a route through a virtual maze with landmarks (paintings) by guiding them along a fixed path to a target location. We then subjected them to a high-stress condition where they had to find their way through the maze while their initial path was blocked, so that they had to find an alternative route, the environment was darkened, threatening music was played, fog obstructed more distal views of the environment, and participants were given a time limit of 20 seconds to find their way, with a countdown timer displayed at the top of their screen. On trials where the path was blocked, we found that self-reported stress levels and distance traveled increased while trial completion rate decreased (as compared to nonstressed control trials), suggesting that participants are less efficient navigators under high-stress conditions. On unblocked stress trials, participants were less likely to take a shortcut and consequently less efficient. In addition, participants with more trait spatial anxiety reported more stress, walked faster, and navigated less efficiently. For a subset of participants, we also looked at eye movements and found that participants had more eye movements under high-stress conditions, most of which happened right after the path was blocked. Overall, our results suggest that navigational abilities change considerably under high-stress conditions.
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talks
Talk 1 on Relevant Topic in Your Field
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Conference Proceeding talk 3 on Relevant Topic in Your Field
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teaching
Teaching experience 1
Undergraduate course, University 1, Department, 2014
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Teaching experience 2
Workshop, University 1, Department, 2015
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