No abstract

No abstract

A detailed survey about the principles of image binarization techniques is introduced in this chapter. A comprehensive review is given. A number of classical methodologies together with the recent works are considered for comparison and study of the concept of binarization for both document and graphic images.

No abstract

AsMANETs use wireless medium for communication, these are vulnerable to many security attacks. In this paper a comprehensive review is done on the very recent state of the art research results on wormhole attacks and relevant mitigation measures. 100% of the works reviewed here are published in last five years, out of which 80% are published in last three years. The simulation results in NS2 helps to quantify the comparative performances of the different solutions proposed.