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Japanese computer scientists have succeeded in developing a special-purpose computer capable of projecting high-quality 3D holography in the form of video. The research team led by Tomoyoshi Ito, professor at the world's leading research institute of the University of Chiba, has been striving to increase the speed of holographic projections developing new materials.
The holography has a long history. Since 1960, year of invention of the first laser, many works involving laser holograms have been performed. To digitize these analog technologies and develop electronic holography techniques to project 3D holographic images as video, computing powers with more than 10 frames per second and 1,000 billion pixels per frame are needed. Therefore, hardware development, as well as the development of the corresponding software, represent some of the biggest challenges for researchers in this field.
In addition, to create a 3D object from two-dimensional data (2D), it is necessary to take into account several factors, including binocular parallax, parallax of motion, angle of convergence, adjustment of the focus and estimates established from the human experience. Currently, general 3D televisions (televisions) use binocular parallax for stereoscopy, but children can not use this technology because it is likely to harm their health. This risk is related to the difference between the distances perceived by a brain and those the eyes focus on. Many researchers in various countries around the world, including Ito in Japan, have invested in video holography, which could allow more people to enjoy a 3D TV safely.
Ito, astronomer and computer scientist, started working on computers specially designed for holography, called HORN, in 1992. The HORN-8, which adopts a calculation method called "type of amplitude" to adjust The intensity of light, was recognized as the fastest computer in the world for holography in a publication of the international scientific journal Nature Electronics April 17, 2018.
With the newly developed HORN-8 "phase type", the calculation method for adjusting the phase of light has been implemented and researchers have been able to project holography information in the form of 3D video with high quality images. This research was published in Optics Express September 28, 2018.
"We have developed high-speed computers for 3D holography by implementing the knowledge of engineering information and the technology of electrical and electronic engineering and learning from the lessons learned. 39, computer and optical methods, "said Ito. "This is the result of the interdisciplinary approach of our research conducted for over 25 years with the commendable efforts of our students studying in our lab."
Takashi Nishitsuji, a former student of Ito Lab and currently Assistant Professor at Tokyo Metropolitan University, who led the experiment, said: "HORN-8 is the result of wisdom, skill and effort We want to continue HORN's research and try different methods from different angles for its practical application. "
In the last phase type of HORN-8, eight chips are mounted on the Field Programmable Gate Array (FPGA). This avoids a bottleneck problem for the processing speed with the calculation method, which prevents the chips from communicating with each other. With this approach, HORN-8 increases the speed of computation in proportion to the number of chips, in order to project the video holography more clearly.
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Material provided by University of Chiba. Note: Content can be changed for style and length.
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