Tekumah, a Dolphin-class submarine, is capable of carrying nuclear warheads. Photo: REUTERS
Jerusalem Post - Prof. Yoav Schechner, of the Technion’s electrical engineering department, and colleagues developed the virtual periscope.
‘Up periscope!” may become an outdated order thanks to a team of
Technion-Israel Institute of Technology researchers who have developed a
new technology for viewing objects above the water’s surface without
the need for a periscope poking its head above the waves. The
researchers modeled their virtual periscope on technology used by
astronomers to counter blurring and distortion caused by layers of
atmosphere when viewing stars.
The technology behind a submerged “virtual periscope” was introduced in
a presentation at the IEEE International Conference on Computational
Photography, held in California earlier this month. Prof. Yoav
Schechner, of the Technion’s electrical engineering department, and
colleagues developed the virtual periscope, which is called “Stella
Maris” (Stellar Marine Refractive Imaging Sensor).
The heart of the underwater imaging system is a camera – a pinhole
array to admit light (a thin metal sheet with precise, laser-cut
holes), a glass diffuser and mirrors.
The rays of the sun are projected through the pinholes to the diffuser,
which is imaged by the camera, beside the distorted object of
interest. The image is then corrected for distortion. Read More