Fig. 2.

Layer segmentation algorithm. (a) Flowchart of layer segmentation algorithm; (b) flowchart for estimation of layer information within B-scan image; (c) schematic of boundary searching algorithm. Layer information, including number of layers and changing point of tissue structure were estimated in (b). Pixels at the boundary of each layer were searched from column to column within a range of $\mathrm{\Delta }z$ pixels over depth in (c).