In this proceeding, an efficient method of blood cell counting, particularly, for identifying red blood cell and white blood cell is discussed. The method is based on a modified hough transform known as hough transform filters. Using these filters, simultaneous shape recognition of circles of different radii becomes much easier without having to change image parameters using thresholding or contrast enhancement etc. for each step. Initial results show that the method detects RBC and WBC without fail apart from the ones closer to image boundaries. © 2017 IEEE.