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  1. No Access

    Chapter and Conference Paper

    Adaptive-Scale Robust Estimator Using Distribution Model Fitting

    We propose a new robust estimator for parameter estimation in highly noisy data with multiple structures and without prior information on the noise scale of inliers. This is a diagnostic method that uses rando...

    Thanh Trung Ngo, Hajime Nagahara, Ryusuke Sagawa in Computer Vision – ACCV 2009 (2010)

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    Chapter and Conference Paper

    Video Synthesis with High Spatio-Temporal Resolution Using Motion Compensation and Image Fusion in Wavelet Domain

    This paper presents a novel algorithm for obtaining a high spatio-temporal resolution video from two video sequences. These sequences are high resolution with low frame rate and low resolution with high frame ...

    Kiyotaka Watanabe, Yoshio Iwai, Hajime Nagahara in Computer Vision – ACCV 2006 (2006)

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    Chapter and Conference Paper

    Video Synthesis with High Spatio-temporal Resolution Using Spectral Fusion

    We propose a novel strategy to obtain a high spatio-temporal resolution video. To this end, we introduce a dual sensor camera that can capture two video sequences with the same field of view simultaneously. Th...

    Kiyotaka Watanabe, Yoshio Iwai in Multimedia Content Representation, Classif… (2006)

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    Chapter and Conference Paper

    Calibration of Rotating Line Camera for Spherical Imaging

    A number of applications in many fields, including virtual reality, digital archiving, etc., now require the capturing of large fields of view (FOV) and high-resolution images. Recently, rotating line cameras ...

    Tomoyuki Hirota, Hajime Nagahara, Masahiko Yachida in Computer Vision – ACCV 2006 (2006)

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    Chapter and Conference Paper

    A Novel Wearable System for Capturing User View Images

    In this paper, we propose a body attached system to capture the experience of a person in sequence as audio/visual information. The proposed system consists of two cameras (one IR (infra-red) camera and one wi...

    Hirotake Yamazoe, Akira Utsumi in Computer Vision in Human-Computer Interact… (2004)

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    Chapter and Conference Paper

    Face Recognition System Using Accurate and Rapid Estimation of Facial Position and Scale

    Face recognition technology needs to be robust for arbitrary facial appearances. In this paper, we propose a face recognition system that is efficient and robust for facial scale variations. In the process of ...

    Takatsugu Hirayama, Yoshio Iwai in Audio- and Video-Based Biometric Person Au… (2003)

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    Chapter and Conference Paper

    Wide-Range Tracking Hands in Real-Time

    We propose a method for wide-range tracking of hands in real-time by a vision sensor. By using random sampling and importance sampling, our method can track hands and estimate hand positions in real-time. We u...

    Yoshio Iwai, Tomohiro Mashita in Articulated Motion and Deformable Objects (2002)

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    Chapter and Conference Paper

    Gesture and Posture Estimation by Using Locally Linear Regression

    Many methods for measuring human motion have been proposed because they can be applied to various fields such as CG animation, virtual reality, and gesture recognition. This paper proposes a method for gesture...

    Yoshio Iwai, Keita Manjoh, Masahiko Yachida in Articulated Motion and Deformable Objects (2002)

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    Chapter and Conference Paper

    Face Recognition Based on Efficient Facial Scale Estimation

    Facial recognition technology needs to be robust for arbitrary facial appearances because a face changes according to facial expressions and facial poses. In this paper, we propose a method which automatically...

    Takatsugu Hirayama, Yoshio Iwai in Articulated Motion and Deformable Objects (2002)

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    Chapter and Conference Paper

    Support System for Creative Activity by Information Acquirement through Internet

    Social activities are divided into two types. One is a creative activity by the combination of the existing object, and another is an imitative activity by which the created matters settles. Since a creation i...

    Wataru Sunayama, Masahiko Yachida in New Frontiers in Artificial Intelligence (2001)

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    Chapter and Conference Paper

    Computer Aided Discovery of User’s Hidden Interest for Query Restructuring

    Most Internet users use Search Engines to get information on the WWW. However, users cannot be content with the output of search engines because it’s hard to express the user’s own interest as a search query. The...

    Wataru Sunayama, Yukio Ohsawa, Masahiko Yachida in Discovery Science (1999)

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    Chapter and Conference Paper

    Discover Risky Active Faults by Indexing an Earthquake Sequence

    A Method for finding areas with the highest risks of near-future earthquakes, from data of observed past earthquakes, have been desired. The presented Fatal Fault Finder (F 3) finds risky ...

    Yukio Ohsawa, Masahiko Yachida in Discovery Science (1999)

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    Chapter and Conference Paper

    Refining Search Expression by Discovering Hidden User’s Interests

    When an Internet user wants to know about a certain topic, the user uses a search engine to find pages related to that topic. However, there are so many pages in World Wide Web that the user cannot access to t...

    Wataru Sunayama, Yuji Nomura, Yukio Ohsawa, Masahiko Yachida in Discovey Science (1998)

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    Chapter and Conference Paper

    Discovery of Unknown Causes from Unexpected Co-occurrence of Inferred Known Causes

    We or computers cannot have perfect knowledge about real events. Even in a very simple case, it is very difficult to have knowledge including every event which may have caused observed events. This makes it di...

    Yukio Ohsawa, Masahiko Yachida in Discovey Science (1998)

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    Chapter and Conference Paper

    Identifying faces under varying pose using a single example view

    Identifiying human faces with only a single face model per person is a difficult task, because the input face image may vary with position, expression and pose. This paper describes a flexible face identificat...

    Dadet Pramadihanto, Yoshio Iwai, Masahiko Yachida, Haiyuan Wu in Computer Vision — ACCV'98 (1997)

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    Chapter and Conference Paper

    Gesture recognition from image motion based on subspace method and HMM

    This paper proposes a method to recognize human gestures from an image sequence based on Hidden Markov Model and Karhunen-Lo`eve Transform. As our method uses the motion vector field of the scene for recogniti...

    Yoshio Iwai, Tadashi Rata, Masahiko Yachida in Computer Vision — ACCV'98 (1997)

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    Chapter and Conference Paper

    Multiple camera based human motion estimation

    We propose a human motion detection method using multiple-viewpoint images. We employ a simple elliptic model and a small number of reliable image features detected in multiple-viewpoint images to estimate the...

    Akira Utsumi, Hiroki Mori, Jun Ohya, Masahiko Yachida in Computer Vision — ACCV'98 (1997)