Browsing by Subject "User interaction"
Now showing 1 - 2 of 2
Results Per Page
Sort Options
Item Open Access A face tracking algorithm for user interaction in mobile devices(IEEE, 2009-09) Bülbül, Abdullah; Çipiloğlu, Zeynep; Çapin, TolgaA new face tracking algorithm, and a human-computer interaction technique based on this algorithm, are proposed for use on mobile devices. The face tracking algorithm considers the limitations of mobile use case - constrained computational resources and varying environmental conditions. The solution is based on color comparisons and works on images gathered from the front camera of a device. The face tracking system generates 2D face position as an output that can be used for controlling different applications. Two of such applications are also presented in this work; the first example uses face position to determine the viewpoint, and the second example enables an intuitive way of browsing large images. © 2009 IEEE.Item Open Access Mobile multi-view object image search(Springer New York LLC, 2017) Çalışır, F.; Baştan M.; Ulusoy, Özgür; Güdükbay, UğurHigh user interaction capability of mobile devices can help improve the accuracy of mobile visual search systems. At query time, it is possible to capture multiple views of an object from different viewing angles and at different scales with the mobile device camera to obtain richer information about the object compared to a single view and hence return more accurate results. Motivated by this, we propose a new multi-view visual query model on multi-view object image databases for mobile visual search. Multi-view images of objects acquired by the mobile clients are processed and local features are sent to a server, which combines the query image representations with early/late fusion methods and returns the query results. We performed a comprehensive analysis of early and late fusion approaches using various similarity functions, on an existing single view and a new multi-view object image database. The experimental results show that multi-view search provides significantly better retrieval accuracy compared to traditional single view search. © 2016, Springer Science+Business Media New York.