Figure 1.

Dynamic threshold and unsupervised clustering method. In this figure, a framework of automated Bone Age Assessment (BAA) system is presented. The input radiograph will be diffused by using nonlinear anisotropic diffusion to smooth the image and enhance the edge, preparing it to the segmentation of hand bone from soft-tissue region using adaptive threshold and unsupervised clustering method, followed by a bounded area evaluation to eliminate noise and fill in lost detail; eventually ossification site is recognised, epiphyseal is extracted to be analyzed and bone age is determined.