Abstract
The use of interactive public displays in urban spaces is increasing very fast, and new setups to support these displays are still being explored. In this paper we introduce a gesture based input technique to allow the interaction with public displays avoiding the use of any device attached to the user body. The gestures supported provide navigation, selection and manipulation of objects, as well as panning and zooming on the screen. In order to evaluate how robust the system is in a real public scenario, criteria that could interfere on the interactive task are evaluated, as the amount of brightness in the environment, and the presence of other persons. The setup used to support the tests include a 55” LED TV, a Kinect for gestures capture, and a new algorithm to allow the identification of closing and opening hands. Three test scenarios are described in this paper: the interactive visualization of a graph representing the academic genealogical tree of our University; the selection and manipulation of simple objects; and the free interaction with the map of a building. Given the results of the performed tasks, we conclude that the system, although not behaving very accurately in all situations, has potential to be used on many applications.
Highlights
Public displays are displays that are available to the public, usually in uncontrolled environments
Increasingly interactive displays are been presented to the public [1] and are a tendency for the few years [2], [3], [4]
A couple of works [5], [6] have been done, that describe situations in which people faced an interactive display on a public space
Summary
Public displays are displays that are available to the public, usually in uncontrolled environments. They can be found in airports, shopping malls, parks, restaurants, etc They are used to present the following sessions in the cinema, the price of some product, the dish of the day, important news, and a lot of other information that may be useful to those who see it. It is important to notice that, in these situations, the user does not have the comfort of sitting at a desk and use the conventional mouse and keyboard to interact He needs to stand up and often move physically to be able to explore all the information. We implemented case studies that explore natural gestures for selection and manipulation of virtual objects in 2-D, pan and zoom on an assorted amount of information Such natural interaction can enhance performance and the overall user experience [7].
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