Duke campus map with 7 by 7 WA hologram by DISP

A Duke map with 70×180 mm object size in width and horizon was measured in 2 m distance.
This object is strongly diffusive because it is paper printed. So the hologram signal intensity in the detector plane is weak but the signal intensity is effectively distributed over the fov.
In the reflective geometry, 21×21 hologram patches were scanned over 10 hours in the dark room and the hologram patch is composed of 1200×1200 pixs.
The object image is backpropagated using the angular spectrum method without any further process.
Note the image pixel resolution is equally 4.4 mm which follows the size of detector’s pixel pitch.