Masakatsu Kourogi

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In this paper, we propose a method of personal positioning for a wearable Augmented Reality (AR) system that allows a user to freely move around indoors and outdoors. The user is equipped with selfcontained sensors, a wearable camera, an inertial head tracker and display. The method is based on sensor fusion of estimates for relative displacement caused by(More)
The Wearable Active Camera/Laser (WACL) allows the remote collaborators not only to independently set their viewpoints into the wearer’s workplace but also to point to real objects directly with the laser spot. In this paper, we report an user test to examine the advantages and limitations of the WACL interface in remote collaboration by comparing a(More)
This paper describes an algorithm to detect and track a hand in each image taken by a wearable camera. We primarily use color information, however, instead of prede ned skin-color models, we dynamically construct handand background-color models by using a Gaussian mixture model to approximate the color histogram. Not only to obtain the estimated mean of(More)
We propose a wearable active camera with laser pointer (WACL) as a human interface device for use in telecommunications. The WACL laser pointer is attached to the active camera-head and it can point a laser spot while elevating and panning the camera-head. In our system, a remote instructor can observe around the worker, who is wearing the WACL,(More)
This paper describes a fast and robust image registration method that can be used to create a panoramic image/video from video sequences. To estimate alignment parameters for image registration, the method computes pseudo motion vectors that are rough estimates of optical ows at each selected pixels. Using the proposed method, we implemented a software(More)
This paper describes a Functionally-Distributed (FD) hand tracking method for hand-gesture-based wearable visual interfaces. The method is an extension of the Distributed Monte Carlo (DMC) tracking method which we have developed. The method provides coarse but rapid hand tracking results with the lowest possible number of samples on the wearable side, and(More)
This paper describes a wearable input interface the functions of which is similar to the usual mouse. The Hand-mouse is realized by classifying each pixel as a hand pixel or a background pixel based on approximation of a color histogram with the Gaussian mixture model and by tting the simple model of hand shapes into the classi ed hand pixels.
We present a method of estimating the location and orientation of a pedestrian which simultaneously recognizing his/her actions with a single low-cost inertial measurement unit (IMU) mounted at the waist of the user. Some of the actions other than walking locomotion, such as standing up from/sitting down on a chair, and bending over to slip through(More)
We describe an indoor pedestrian tracking system that can economically improve the tracking performance and the quality and value of services by incorporating other services synergistically. Our tracking system utilizes existing infrastructures to be used for security services such as surveillance cameras and active RFID tags which are sparsely put in place(More)