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Segmentation results from articular cartilage sample S2 (left column) and S3 (right column). (a) Intensity image and (b) phase retardation image. Segmented boundaries are marked by dashed lines. (c) Averaged A-line profile of phase retardation, with the fitting result shown in red-dashed line. Blue-dashed line indicates the reliable thresholding depth. Arrow in (b) indicates the location of the A-line shown in (c). Scale bar is .
