Aditya Vashistha

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Interactive Voice Response (IVR) systems play an important role in collecting and disseminating information in developing regions. Recently, researchers have used IVR technology to build voice forums, in which callers leave messages that can be heard over the Internet and over the phone. However, despite their appeal, voice forums remain difficult to set(More)
Monitoring traffic density and speed helps to better manage traffic flows and plan transportation infrastructure and policy. In this paper, we present techniques to measure traffic density and speed in unlaned traffic, prevalent in developing countries, and apply those techniques to better understand traffic patterns in Bengaluru, India. Our techniques,(More)
Interactive voice forums have emerged as a promising platform for people in developing regions to record and share audio messages using low-end mobile phones. However, one of the barriers to the scalability of voice forums is the process of screening and categorizing content, often done by a dedicated team of moderators. We present Sangeet Swara, a voice(More)
Low-income visually impaired people face a wide variety of educational challenges which are magnified in the developing world. Digital assistive technologies (such as screen readers) are typically out of reach, so individuals depend on Braille and audio recordings to access educational content. Unfortunately, there are acute shortages of Braille and high(More)
We present the first analysis of the use and non-use of social media platforms by low-income blind users in rural and peri-urban India. Using a mixed-methods approach of semi-structured interviews and observations, we examine the benefits received by low-income blind people from Facebook, Twitter and WhatsApp and investigate constraints that impede their(More)
Scene change detection in videos is a primary requirement of video processing applications used for the purpose of generating data needed by video data management systems and digital rights management (DRM) systems. Scene change data can be used in DRM systems for effective IPR protection by means of watermarking and fingerprinting selected scenes. In this(More)
In many developing countries, it is challenging for remote communities to access reliable and accurate sources of news. This paper examines the case of Somaliland, where there is a fragmented media landscape that is subject to tribal biases and manipulations. Often, exaggeration or misrepresentation of facts prompts conflicts and hostility towards(More)
This paper describes the design and pilot deployment of a mobile application to support interactive voice forums, in which users can record messages and listen to messages that others have recorded. While such forums have typically relied on voice calls for participation, participation through a mobile application (and mobile Internet) can offer benefits in(More)