Computational Topology in Image Context

Organizing the 4th International Workshop on Computational Topology in ImageContext (CTIC 2012) has been an interesting experience indeed, going farbeyond Mathematics and Computer Science. This collection documents the presentations accepted at CTIC 2012. Theresearch made by the authors of these papers has been the core of the workshop,and we thank all the contributors for their commitment and dedication. Theireort has allowed us to continue the tradition of CTIC in providing a forum forscientic exchange in Topology and Computation in Image Context at a highquality level.