Parallel holographic generation of multiple Hough transform slices.
Many uses for the Hough transform (HT) require only several theta slices, not the entire 2-D Hough space. A new holographic optical architecture is advanced to achieve this in parallel. The computer-generated holograms and holographic optical elements used are discussed, and laboratory results are provided. As a case study, we consider determining printing skew and other defects on cigarette packs. We also discuss how these holograms can produce the entire 2-D HT space.
Richards
J
J
Vermeulen
P
P
Barnard
E
E
Casasent
D P
DP