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In Japan, gas insulated equipment has been applied widely in various voltage classes because the equipment can meet the social demands that the huge electric power should be supplied with high reliability to the metropolitan and industrial districts of comparatively restricted areas where very severe environmental conditions are required. The reason for the wide application is due to the superior...
SF6 has widely been used as insulating and arc-quenching media for high voltage (HV) power equipment such as gas insulated switchgear (GIS), gas circuit breaker (GCB), gas insulated bus (GIB), gas insulated line (GEL) and gas insulated transformer (GIT) which contribute to achieve compactness and high reliability of the equipment. Improvement of SF6 insulation system in the HV power equipment is however...
Vehicle classification is very important in traffic flow analysis for traffic monitoring systems. Accurate estimation of wheel baseline length can provide a useful cue for vehicle classification. In this paper, we propose a new method for detecting accurate wheel center points and estimating the wheel baseline length of a vehicle taking the distortion in the circular fisheye images into consideration...
In this paper, we propose a reliability based Web information ranking system which enables searching useful and reliable knowledge information. The proposed system will contain subsystems for reliability ranking, information clustering based on reliability. The reliability ranking system will estimate the likelihood that a statement on the Web can be trusted using standards developed by information...
In this paper we present a novel scheme where image features are bundled into local groups. Specifically, features of Near Infrared (NIR) images extracted by using Histogram of Oriented Gradients (HOG) descriptor and those by our multislit method are bundled into a single descriptor. The method involves first localizing the spatial layout of body parts (head, torso, and legs) in individual frames...
In this paper we introduce a novel and simple schemes to develop an optimal choice of morphological Operating Center (OC) for object image retrieval. A variation of the standard morphological operators which require the choice of an OC is discussed. The proposed method is based on combinations of statistical and dynamic programming techniques in which recursive equations on the basis of dilation by...
In this paper we propose a novel optimal crawling strategy for next-generation multimedia search engines. We consider here a Web crawl as a two-dimensional (2D) random walker on a graph whose vertices are the Web pages and whose edges are the hyperlinks. The proposed crawler is a two-part scheme optimizing the crawling process in such a way that the average level of staleness over all pages is minimized...
In this paper, we propose a new method for detecting tire-road contact points and estimating the position of a vehicle on a road taking the distortion in a circular fisheye image into consideration. In our proposed method, we use the distortional parameter of two concentric circles composed of the inner wheel and the outer tire by considering projection system of fisheye lens, and the searching the...
We propose a hierarchical display method for small devices based on saliency. This method displays a large scale image in a small screen of a small mobile device as a mobile phone. In this method a region of interest (ROI) is detected using a saliency model. The region is successively detected hierarchically to produce a tree structure of ROI. Then we calculate the increasing rate of saliency in each...
This paper proposes a new and compact method for object image retrieval fusing Dominant Colors (DCs) and embedded Markov chain concepts. This proposed method uses combined color-texture features which are characterized in terms of their spatial interaction or interrelationship properties, modeled by means of a set of embedded Markov chains, each associated with a major spatial direction. Specifically,...
When the blade of the windmill crosses with the tower in wind power generation system, the wind pressure that blows against the blade becomes weak and the rotor speed decreases. This is called tower shadow effect. This paper proposes the method used stator-flux-oriented vector control to prevent the effect of the tower shadow for the wind generator system with a wound rotor induction generator. This...
An image-based technique with high measurement rate has been proposed to measure the distance between two moving vehicles. By combining several near-infrared (NIR) LED markers mounted on the forward vehicle with an NIR-filtered CMOS camera mounted on the backward vehicle, one can clearly recognize the marker shape and positions without any adjusting the focus lens of camera, and hence he can extremely...
This paper proposes a new method for object retrieval in image and video databases. The proposed system uses the histogram based approach along with Angular Radial Representation (ARR). In addition, concepts of Dominant Colors (DCs) and morphological dilation using ring-shaped and fan-shaped Structuring Elements (SEs) are also applied. It is found that the approach is not only invariant to rotation,...
In this paper, we explore and examine a new novel approach to image ranking systems based on some special types of Markov chain along with new concepts of popularity and relevancy measures for image database. To be specific, this approach introduces a family of special Markov chain models in which serial correlations are explicitly involved so that we can use them as correlations among the images...
By combining a CMOS digital image sensor with windowing function to a one-chip DSP with programmable peripherals, a high-frame-rate embedded image-processing system has been developed to measure the target position. The system can capture the VGA format image (640times480 pixels) at the rate of 83 frames/sec, exceeding the conventional video rate of 30 frames/sec. The capture rate can be easily increased...
In this paper, we introduce a novel approach to retrieve significant spatial images from a collection of images. The query images of interest in this paper are specified rectangular-shaped and circular-shaped as framed photographs. By incorporating the advantages of adaptive thresholding and tolerant partitioning into peak color regions, the proposed method requires low computational complexity and...
We propose a model of hierarchical attention focusing and its application to a display method for small mobile devices. First we point out that the visual resolution is low when the attended area is broad and is high when the attended area is narrow. Then we propose a model to obtain saliency which expresses tendency of attracting human attention. Combining these we construct a model which controls...
In contrast with the current search engines that essentially do page-level ranking and searching, we are exploring a new paradigm to enable Web search at image level by introducing a new concept of Popularity-based Rank (PR). This paper introduces PR, a content-level ranking and searching model for multimedia retrieval. Specifically, we establish a PR Operation which is combined with new link structure...
In this paper, we study the problem of restoring a high-resolution image from several blurred low-resolution images. The images consist of decimated, blurred and noisy versions of the high-resolution image. The high-resolution image is modeled as a maximum a posteriori. We show a projection onto convex sets method with criterion. Computer simulations are given to confirm the effectiveness of the proposed...
In this paper we present a robust method for person detection using far infrared images. To extract initial nominated head regions, thresholding and morphological operations are applied using intensity information. Among these regions, some of wrongly extracted regions are removed using the pattern of person head based on the local maximums of Sobel edge image. After the head regions are segmented,...
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