[OPTICAL REVIEW Vol. 1, No. 2 (1994) 153-155]

An Optical Hough-Transform Filter for Parallel Detection of Plural Element Shapes

Kunihiko MORI1 and Ryoji OHBA2

1Graduate School of Engineering, 2Faculty of Engineering, Hokkaido University, N13 W8, Sapporo, 060 Japan

(Accepted October 4, 1994)

Optical parallel implementation of plural Hough-transforms is investigated for simultaneous detection of plural element shapes. Parallel detection is optically carried out using a two-dimensional array of computer-generated holograms, each of which simultaneously reconstructs plural rearranged parameter do