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Various indoor navigation methods have been developed recently, but digitalized data of indoor map is not always available. Therefore, an indoor navigation framework using an image of information board has been proposed. In this method, the process to extract map regions from the image of an information board is necessary to be done by hands beforehand, and the process to estimate passageway regions...
This paper describes an adaptive deblocking postfilter based on neural networks for use in H.265 High Efficiency Video Coding (HEVC). Blocking noise is a common problem in video coding caused by the division of the frame into blocks. The filter is adaptive because it uses different filter parameters depending on block characteristics. We use a modified HEVC decoder to export the block information...
Peer-to-peer system is a promising solution to manage a large amount of data, but similarity search on peer-to-peer network with a restricted small number of messages is a challenging problem. Existing methods that can perform similarity search work only with low-dimensional data. We propose a method to transform the very high-dimensional data into low-dimensional vectors in order to perform similarity...
In this work, we propose a method for estimating the user's gazing point in the environment using images taken by an eye tracker and an omnidirectional camera. The proposed method estimates the eye positon in environment by mapping the gazing point obtained by the eye tracker in the omnidirectional camera image. However, matching the omnidirectional image and the eye tracker image is difficult because...
Improvement of character recognition technology brings us various character recognition applications for mobile camera. However, many low-resolution and poor-quality character images exist due to the performance of the camera or the influence of environment, and existing methods are not good at recognizing those low-resolution characters. Therefore, we develop a character recognition system for ultra-low...
Electric power is one of the important infrastructures for our life. The electric power system is going to be changed dramatically by clean energy, which includes unstable power supplies such as photovoltaics and wind-power generation, and by introduction of distributed power generation. In order to maintain a balance between supply and demand, a mechanism called demand response, which manages user...
Various image and video compression methods have been developed so far for data reduction. However, necessary information of an original image or video may be degraded if the image is highly compressed without considering the importance of each region in the image. In this paper, we propose a method to detect regions that are important for humans in an image and compress the image efficiently by changing...
In character recognition system using images captured by a mobile phone camera, it is difficult to correctly recognize blurred characters. Therefore, we aim at high accuracy character recognition by obtaining information from multiple frames of video. In this paper, we propose a character recognition method based on the Compound Mutual Subspace Method which absorbs the blur of low-resolution character...
In order to transfer large amount of data such as images when the networks are seriously damaged, an efficient compression technique is necessary. The aim of this study is to develop an image compression method combining image processing and image recognition techniques. An image processing technique is used for reducing the amount of image data. An image recognition technique is used for detecting...
Ad-hoc mesh network can be a practical and feasible workaround when mobile phone networks will be unavailable in large-scale disasters. This paper aim to construct a location estimation system for temporary deployed ad-hoc mesh networks with considering incorrect anchor nodes.
Distributed power generation, using renewable energy, has been attracting attention to cope with global environment issues; a microgrid is a promising configuration for distributed power generation. To augment the stability and efficiency of the microgrid, an intelligent control, which considers the restrictions and characteristics of each unit, is indispensable. It can be achieved by constructing...
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