Figure 8
From: Optical cryptography with biometrics for multi-depth objects
Occlusion results for the decrypted images with different degrees of occlusion. (a) with 25% occlusion (blanking the second quadrant of the hologram), (b) corresponding decrypted image from (a) at decoding distance z 1, (c) corresponding decrypted image from (a) at decoding distance z 2, (d) with 50% occlusion, i.e., blanking half (left side) of the hologram, (e) corresponding decrypted image from (d) at decoding distance z 1, and (f) corresponding decrypted image from (d) at decoding distance z 2.
