%0 Journal Article
%T Compression-Based Tools for Navigation with an Image Database
%A Antonella Di Lillo
%A Ajay Daptardar
%A Kevin Thomas
%A James A. Storer
%A Giovanni Motta
%J Algorithms
%D 2012
%I MDPI AG
%R 10.3390/a5010001
%X We present tools that can be used within a larger system referred to as a passive assistant. The system receives information from a mobile device, as well as information from an image database such as Google Street View, and employs image processing to provide useful information about a local urban environment to a user who is visually impaired. The first stage acquires and computes accurate location information, the second stage performs texture and color analysis of a scene, and the third stage provides specific object recognition and navigation information. These second and third stages rely on compression-based tools (dimensionality reduction, vector quantization, and coding) that are enhanced by knowledge of (approximate) location of objects.
%K image retrieval
%K image analysis
%K location
%K navigation
%U http://www.mdpi.com/1999-4893/5/1/1