Bezier curves as a tool to describe kinetic drawings

Most often, in the field of technical drawings, the representations of documents are not suited to the simultaneous processing of straight lines and of curves. We propose a two step process embedded in a global process. First is presented the construction of a global representation using two features, the vectors and the quadrilaterals. Then, in order to better handle the curves, a method using Bezier curves is introduced. Finally, we show that it is better to consider this process as a specialist among many others. The cooperation of the different experts leads then to a better interpretation of documents.