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Development of a human computer interface based on hand gestures

During this thesis work it has been developed and tested a system able to analyze video streams, with the aim to recognize the occurency of previously learned hand configurations or the execution of specific gesture trajectories. Specifically, they have been analyzed and implemented several techniques representing the state of art about skin detection, motion analysis, multiple objects tracking (hands tracking), data sequences alignment, spotting of data patterns embedded in longer sequences and pruning classifiers learning. Algorithms found in literature, that solves the problems listed above has been combined and modified in order to adapt to the application needs of this thesis work.

Mostra/Nascondi contenuto.
Chapter 1 Introduction Since the early years of computers the keyboard and the mouse has been the most popular way of human-computer interaction; however in recent years it has been observed a new trend in searching for more natural and immersive kind of interfaces, making users able to interact with their whole body or just touching or moving input devices. Touchscreen display is a well known technology, as the rst exemplary were introduce in the market in the second half of the 1960s 1 but its mas- sive consumer use started since the introduction by Apple Inc. of the iPhone in 2007 2 ; after this event, touchscreen devices became more and more popular and other interesting application were launched in the market, like Microsoft Surface from Microsoft Corporation, an interactive table developed as a software and hardware combination of technology that allows multiple users to manipulate digital content with gestures performed touch- ing the table, and that can interface to other physical devices leant on its plane. A revolution in the Human-Computer Interaction (HCI) eld were introduced by Nintendo Co,Ltd. that launched the Wii in the late 2006 3 , a last generation gaming console with a set of controller devices that make the user able to interact with the system with his body, thanks to motion sensors and infrared transmitters and receivers that allow to estimate the 1 http://en.wikipedia.org/wiki/Touchscreen#History 2 iPhone is a new generation smartphone that presents a multitouch interface as main interaction way. More information at http://en.wikipedia.org/wiki/IPhone 3 http://en.wikipedia.org/wiki/Wii 8

Laurea liv.II (specialistica)

Facoltà: Scienze Matematiche, Fisiche e Naturali

Autore: Luca Piccinelli Contatta »

Composta da 108 pagine.

 

Questa tesi ha raggiunto 249 click dal 23/02/2011.

Disponibile in PDF, la consultazione è esclusivamente in formato digitale.