Keiichi Ochiai

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The use of ultra-broadband supercontinuum generated by an all-fiber system to characterize high-index contrast photonic circuits over the wavelength range 1.2 – 2.0 µm is demonstrated. Efficient, broadband waveguide coupling techniques and sensitive normalized detection enable rapid and high-resolution measurements of nano-scale one-dimensional photonic(More)
In the field of virtual studios in the television industry, the facial live video stream and background scenes must be composed in real time. One of the complex problems in this compositing is matching the lighting between the facial live video and the background scene. In this paper, we develop a practical lighting reproduction technique to reproduce the(More)
Photorealistic image synthesis is a challenging topic in computer graphics. Image-based techniques for capturing and reproducing the appearance of real scenes have received a great deal of attention. A long measurement time and a large amount of memory are required in order to acquire an image-based relightable dataset, i.e., light transport or reflectance(More)
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