In this paper, a new codification of Local Binary Patterns(LBP) is given using graph pyramids. The LBP code characterizes thetopological category (local max, min, slope, saddle) of the gray levellandscape around the center region. Given a 2D grayscale imageI,ourgoal is to obtain a simplified image which can be seen as "minimal"representation in terms of topological characterization ofI.Forthis,amethod is developed based on merging regions and Minimum ContrastAlgorithm.


Cerman, M., Gonzalez-Diaz, R., & Kropatsch, W. (2015). LBP and Irregular Graph Pyramids. In N. Petkov & G. Azzopardi (Eds.), Computer Analysis of Images and Patterns (pp. 687–699). Lecture Notes in Computer Science. https://doi.org/10.1007/978-3-319-23117-4_59