Ippei Suzuki

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Two acceleration data loggers, each measuring surging and heaving acceleration, were attached to the head and mandible of three captive hooded seals, Cystophora cristata, for detection of underwater feeding events. Three sizes of prey: Atlantic herring (large), capelin (medium), and half a capelin (small) were tested. A highpass frequency-filtering method(More)
Swimming at an optimal speed is critical for breath-hold divers seeking to maximize the time they can spend foraging underwater. Theoretical studies have predicted that the optimal swim speed for an animal while transiting to and from depth is independent of buoyancy, but is dependent on drag and metabolic rate. However, this prediction has never been(More)
We present a new method to render aerial images by aerosol-based fog screens. Conventional fog screens are easily affected by the air flow and their generator occupy large areas. In this study, we propose to add new tradeoffs between limited display time and payloads. We employ aerosol distribution from off-the-shelf spray as a fog screen that can resist(More)
We present a novel method for fast-moving aerial imaging using aerosol-based fog screens. Conventional systems of aerial imaging cannot move fast because they need large and heavy setup. In this study, we propose to add new tradeoffs between limited display time and payloads. This system employ aerosol distribution from off-the-shelf spray as a fog screen(More)
We present a novel manipulation method that subconsciously changes the walking direction of users via visual processing on a head mounted display (HMD). Unlike existing navigation systems that require users to recognize information and then follow directions as two separate, conscious processes, the proposed method guides users without them needing to pay(More)
The feeding events of wild animals have been widely researched in recent decades. The use of invasive methods to determine stomach contents in which the fish is killed can, however, be considered to be unjustifiable in the case of an endangered fish, such as the Japanese late. Here, we report on a method that can be used to verify feeding events of a fish(More)
Conventional research on pedestrian navigation systems has explored the possibilities of presenting information to users both visually and aurally. Existing navigation systems require users to recognize information, and then to follow directions as separate, conscious processes, which inevitably require attention to the system. This study proposes a novel(More)
We propose a system for transmitting a human performer's body and facial movements to a puppet with audiovisual feedback to the performer. The system consists of a head-mounted display (HMD) that shows the performer the video recording of the puppet's view, a microphone for voice capture, and photoreflectors for detecting the mouth movements of the human(More)
Aerial manipulation of material objects is fascinating and is used in many performance situations. Many scientific demonstrations and magic shows employ these levitations. Acoustic, magnetic, electric, and superconductive levitation are used in many situations. Adding controllability and increasing the design space of these levitation methods are often(More)