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In this paper, we propose a method of measuring the orientation of observed objects as a parametric model. The orientation is represented as angle of observed objects. We suppose that optical flow obtained from image have component of not only component of translational velocity but also revolution, scaling, and orientation. To estimate these components, it is necessary to construct nonlinear simultaneous...
In this paper, we propose the technique for tracking the velocity of objects that combines the particle filter with optical flow. If the feature of the target is unknown, some conventional particle filters are hard to apply. This problem can be solved by estimation method of optical flow. Moreover, we introduce a new idea. If particles relocate out of the image, particles are salvaged. When a new...
In this paper, we propose a system to extract the moving object by the segmentation based on fast optical flow estimation. This optical flow estimation is based on multichannel integration for speeding up and can estimate more accurate optical flow fast. Moving object can be extracted by the segmentation using the obtained optical flow. Experimental results show that the segmentation based on the...
In this paper, we propose the technique for tracking the velocity of objects that combines the particle filter with optical flow. If color of the target or feature of its shape is unknown, some conventional particle filters are hard to apply because the prediction step of them are based on probabilistic theory. This problem can be solved by estimation method of optical flow. Experimental results show...
In this paper, we experimentally investigate the influence of multi-channel optical crosstalk in a 25-GHz spaced dense-wavelength division multiplexing (DWDM) millimeter-wave-band radio-over-fiber (RoF) downlink system. The eleven-channel crosstalk filtered with arrayed waveguide gratings (AWGs) was intentionally mixed with the desired channel of the RoF signal. We defined the suppression ratio of...
A system with an optical 6-axis force sensor was developed to measure contact force during braille reading. In using this system, we encountered two problems. One is a variability of output values depending on the contact point. This was solved by using two transformation techniques. The other is that subjects read braille in a different manner from the usual. We compared two manners of braille reading,...
A system with an optical 6-axis force sensor was developed to measure contact force during braille reading. In using this system, we encountered two problems. One is a variability of output values depending on the contact point. This was solved by using two transformation techniques. The other is that subjects read braille in a different manner from the usual. We compared two manners of braille reading,...
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