Abstract EN:

We propose a solution for presentation and management of vector multiresolution geodata by taking into account constraints related to mobile context (limitations of storage, displaying capacities and transfer rate). Our solution provides users with the LoD ("Level of Detail") in adequation with scale by respecting the well-known "principle of constant density of data". The amount of data exchanged between client and server is minimized in our system by reusing already locally available data when possible. Increment corresponds to an operation sequence allowing reconstruction of LoD of an object from an available LoD of the same object on the client side. Transferring only increment appears more interesting than downloading an "entire" LoD object. We present models of multi-resolution data and transfer, and principles allowing an incremental management of data in a mobile geodata visualization system. Then we prove interest of our multi-resolution strategy in relation to mono-resolution one.