Automatic Identification of Mycobacterium tuberculosis in Ziehl-Neelsen Stained Sputum Smear Microscopy Images using a Two-stage Classifier Topics: Medical Image Applications; Object Detection and Localization; Shape Representation and Matching In Proceedings of the 10th International Conference on Computer Vision Theory and Applications - Volume 1: VISAPP, 186-191, 2015 , Berlin, Germany