Figure 8

Example for data analysis. For each sample a region of interest (ROI) is extracted from the images. The width W of this region is 101 pixels, and it runs from d = 1 pixel at the articular surface to d = D pixels at the cartilage/bone interface. The predominant orientation φ is expressed relative to the articular surface. For sample pattern calculations, we used the 101 pixels over the width of the ROI at each depth d = 1, 2, 3, ..., D.