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. 2016 Dec 5;8(1):48–56. doi: 10.1364/BOE.8.000048

Fig. 1.

Fig. 1

The 12 features for the random forest classifier. (A) Inner retinal angiogram. (B) En face structural OCT of the inner retina. (C) Choroidal angiogram with a V-shaped island of intact choriocapillaris. (D) Reflectance values of the voxel projected for the choroidal angiogram. (E-H) The choroidal angiogram after standard deviation filters of 180 × 180 µm (E), 300 × 300 µm (F), 380 × 380 µm (G), and 500 × 500 µm (H). Note the difference in appearance of a larger choroidal vessel after standard deviation filters of different sizes (green arrows). (I-L) The choroidal angiogram after Gabor directional filters of 200 × 200 µm (I), 320 × 320 µm (J), 400 × 400 µm (K), and 520 × 520 µm (L).