We discuss two mobile applications that benefit from the proposed algorithms. First, we developed a pilot visual search system. Based on the GPS/Cell ID information provided by the phones, the visual database for location-based point-of-interests (POI) is streamed to the phone. The algorithm on the phone matches the input images to the visual database,
and shows the results to users. Previous works in this respect include. Next, we developed a panorama system on mobile phones. Our system uses a feature-based approach. In this application,not only the region selection algorithm is applied,we also apply the feature selection algorithm, so that an optimally distributed feature set is selected for more reliable image registration.