Takashige Sugie

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a r t i c l e i n f o a b s t r a c t We have designed a PC cluster system with special purpose computer boards for visualization of fluid flow using digital holographic particle tracking velocimetry (DHPTV). In this board, there is a Field Programmable Gate Array (FPGA) chip in which is installed a pipeline for calculating the intensity of an object from a(More)
We propose an optical encryption framework that can encrypt and decrypt large-sized images beyond the size of the encrypted image using our two methods: random phase-free method and scaled diffraction. In order to record the entire image information on the encrypted image, the large-sized images require the random phase to widely diffuse the object light(More)
  • T. Sugie
  • 2004
The paper reports on photonic technologies for future information networks along with recently developed optical systems for access and core networks. Also described are fiber-to-the-home (FTTH) and high-speed systems that use WDM and optical amplifiers, which will form the infrastructure of the next generation of networks for high quality broadband(More)
Improvement of the image quality of random phase–free holography using an iterative method Abstract Our proposed method of random phase-free holography using virtual convergence light can obtain large reconstructed images exceeding the size of the hologram, without the assistance of random phase. The reconstructed images have low-speckle noise in the(More)
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