Akihiro Katayama

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PURPOSE Matrix metalloproteinase (MMP)-2 and MMP-9 are considered to play an important role in the metastasis of malignant tumors. Membrane type 1-MMP (MT1-MMP) and tissue inhibitor of metalloproteinase 2 (TIMP-2) are essential factors for the activation of pro-MMP-2. There are some reports about expressions of MMP family in relationship to clinical(More)
This paper describes the Image-Based Walk-Through System in which people walk-through a town which is historically valuable such as Shirakawa-go stored in a computer. This system is composed of two methods. The panorama-based method changes panoramic images according to the observer's point of view. The panoramic images used in this method is made by(More)
Cell surface chondroitin sulfate proteoglycan 4 (CSPG4) is an attractive target for antibody-based cancer immunotherapy because of its role in tumor cell biology, its high expression on malignant cells including cancer-initiating cells, and its restricted distribution in normal tissues. The clinical use of CSPG4 has been hampered by the lack of a(More)
We discuss how to locate and manipulate the multi-viewpoint data set (MVDS) in virtual environment. Since MVDS has no geometric information in it, additional information, which links a virtual object represented by MVDS and geometry-based virtual space, should be attached to it. Without having that kind of information, no manipulation in virtual space is(More)
representation of complex objects without geometric models. Now the key to IBR future prosperity is how to accomplish functionalities of conventional geometry-based approaches. We have already reported how to interact with image-based objects in the virtual environment 3. The next goal is how to make objects without polygon models react to transition of(More)
ixed reality (MR) is a kind of virtual reality (VR) but a broader concept than augmented reality (AR), which augments the real world with synthetic electronic data. On the opposite side, there is a term, augmented virtuality (AV), which enhances or augments the virtual environment (VE) with data from the real world. Mixed reality covers a continuum from AR(More)