Image segmentation has become in indispensable task in many image applications. In order to analysis this issue, the use of thresholding technique is well-known. Because of its applicability, quite a number of thresholding methods have been proposed over the years. This paper attempts to undertake the study of image segmentation and as a result of this study was implemented OTSU algorithm that has the goal to convert images to black and white and so make them better identifiable.