
The large number of images through which the user must navigate limits the usability of automatically generated image-based systems. Rewind is a scalable system of everyday mobile phones and supporting web services that we developed to explore how client- and server-side image processing can be used to both lower bandwidth needs and streamline user navigation. While the system is designed to accommodate a range of image processing algorithms, in this first prototype we rely on simple filtering techniques to evaluate our system concept. Simple image processing on the phone can address the narrow-band and intermittent upload channels that characterize cellular infrastructure, while more sophisticated processing techniques can be implemented on the server to further reduce the number of images displayed to users.