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Remote sighted assistance (RSA) has emerged as a conversational assistivetechnology, where remote sighted workers, i.e., agents, provide real-timeassistance to users with vision impairments via video-chat-like communication.Researchers found that agents' lack of environmental knowledge, the difficultyof orienting users in their surroundings, and the inability to estimatedistances from users' camera feeds are key challenges to sighted agents. Toaddress these challenges, researchers have suggested assisting agents withcomputer vision technologies, especially 3D reconstruction. This paper presentsa high-fidelity prototype of such an RSA, where agents use interactive 3D mapswith localization capability. We conducted a walkthrough study with thirteenagents and one user with simulated vision impairment using this prototype. Thestudy revealed that, compared to baseline RSA, the agents were significantlyfaster in providing navigational assistance to users, and their mental workloadwas significantly reduced -- all indicate the feasibility and prospect of 3Dmaps in RSA.

Feasibility of Interactive 3D Map for Remote Sighted Assistance