Effect of Adaptive Histogram Equalization of Orthopedic Radiograph Images on the Accuracy of Implant Delineation Using Active Contours

The segmentation of implants on orthopedic radiographs is a difficult task. Due to different acquisition conditions, some photos have reduced quality and contrast. The use of cement in alloplastics particularly hinders this process. This article presents considerations on how to increase the effectiveness of the active contour method when segmenting these implants using adaptive histogram equalization. Radiogram analyses are presented and a binarization method is proposed. Segmentation accuracy is experimentally estimated in relation to the parameter space of the algorithms used.