The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Mobile robots work in different kinds of environment, and it is necessary for them to move and maneuver in places with objects and obstacles. In order to navigate the robot in a collision free path, path planning algorithms have been presented. The main goal of path planning is to determine the optimal possible path between the initial point and the defined goal position in the minimal possible time...
The main problem in wood species recognition system is the lack of discriminative features of the texture images. Some of the wood species have similar patterns with others and some have different patterns even though they are of the same species. Moreover, the growth rings for tropical wood changes slightly due seasonal changes in climate. One of the ways to improve the system is by providing more...
This paper will discuss how to compress the stereo media data in order to avoid getting poor performance when transmitting these data over network. We proposed a novel disparity estimation method for stereo video compression. Based on our method, we overcome some of the defects of phase correlation and improve disparity estimation accuracy on stereo image. From our experiments, the results not only...
An EAP method, EAP-ATN, is proposed for controlling accesses to services provided to general public in open environments, such as public wireless LAN access services. Automated Trust Negotiation (ATN) is a framework where a service provider and a client collaboratively determine whether to trust each other by exchanging credentials. By performing ATN as an EAP method, flexible and secure usage of...
People of all ages are enjoying Social Networking Services (SNSes) nowadays. Posting messages through an SNS increases the risk of privacy invasion since private information is leaked during the process. One reason is that SNS users often leak their own private information. In this paper, we define and evaluate a classification table of privacy-sensitive information for Social Networking Services...
The first texture descriptors are proposed in 1973 by Haralick[1] and in 1975 by Marie Galloway[2] are still used today for image classification or segmentation in various domains. The majority of these features are defined for gray level images. Many papers have proposed different approaches among them, a parallel study of color and gray level texture characterization when other combined the two...
With the wide use of e-mail, it has become commonly expected that e-mails sent are delivered to recipients immediately. It is not rare that a huge amount of emails are posted to a mail transfer system in very short time unintentionally, due to misconfiguration such as an e-mail loop. Such e-mail flood increases the load of the mail transfer system, and causes serious delays in e-mail delivery of the...
After the Great East Japan Earthquake on 11 March 2011, there are many activities to cope with the disaster and future disasters. This paper discusses examples of disaster recovery activities, using Information and Communication Technology (ICT) around us in Japan.
We calculated the usable distance of the main roads in the southern coastal area of Iwate prefecture following the 2011 Tohoku Earthquake. Calculations were based on a vehicle-tracking map built from G-BOOK telematics data. The main findings were as follows: 1) The distance of the roads used in a weekly period increased continuously from 03/18/2011 to 04/7/2011, but fluctuated thereafter. 2) Defining...
The objective of reconstruction-based super-resolution is to construct a high-resolution image from a sequence of low-resolution images. The super-resolution processing requires precise registration of low-resolution images and the registration error degrades the resulting high-resolution image. In order to handle inaccuracies in registration, the robust super-resolution methods have been proposed...
This paper deals with color image quality assessment in the reduced-reference framework based on natural scenes statistics. In this context, we propose to model the statistics of the steer able pyramid coefficients by a Multivariate Generalized Gaussian distribution (MGGD). This model allows taking into account the high correlation between the components of the RGB color space. For each selected scale...
The current fast-changing business environment requires workflow management systems to provide the ability of dynamic analysis when processes are edited or updated at both design time and execution time. In this paper, based on model checking we present a new approach of dynamic analysis on temporal properties after changes at design time and execution time. Our approach firstly records and analyzes...
Since the advent of the Internet, the demand for distributed applications scaling geographical areas has been ever increasing. During the last decade, research into the Grid paradigm let to the concept of ad-hoc virtual organisations and have added an impetus towards distributed applications by providing on-demand service provisioning. The use of job-based paradigms and strong coupling of current...
This work presents a conceptual framework for learning an ontological structure of domain knowledge, which combines Jaccard similarity coefficient with the Infinite Relational Model (IRM) by (Kemp et al. 2006) and its extended model, i.e. the normal-Infinite Relational Model (n-IRM) by (Herlau et al. 2012). The proposed approach is applied to a dataset where legal concepts related to the Japanese...
Choosing descriptive keywords to best describe digital media content is crucial for many applications, especially those involving content-based indexing or retrieval. Traditionally such keywords are selected manually, which is labor intensive, restrictive to a limited set of words and inherently subjective to the annotator. Therefore, in this paper, we propose an automatic and objective keyword selection...
This paper presents a method to adopt phase correlation for blurred frames. Phase correlation is a strong motion estimation tool which is highly robust against noise, However, phase correlation is not robust against blur degradation in frames. In scenarios where only one of the frames is blurred or when the two frames have different blur extents, phase correlation does not achieve an accurate estimation...
In this paper, we present "Smartweed", a Locationbased application developed within DATABENC, a high technology district for Cultural Heritage management. In particular, the project aims at exploiting several location-based services and technologies to realize a smart multimedia guide system able to detect the closest artworks to an user, make them able to "tweet" and "talk"...
In this paper, we propose an optical tomography for optically dense media in which multiple scattering is dominant. We model a material by many layers of voxels, and light scattering as a distribution from a voxel in one layer to other voxels in the next layer. Then we write attenuation of light along a light path by an inner product of vectors, and formulate the scattering tomography as an inequality...
Recently, road network extraction in urban areas using high resolution data, has attracted many researchers because it is very challenging and important work in order to provide an intelligent spatial processing. In this work, we use two types of data: an extremely high-resolution image in which the signature of the road, such as zebra crossing, road lines, cars, and the like, can be seen in detail,...
Reconstruction of an image from its LBP codes can aid understanding of the information contained within the codes by comparing the reconstructed image to the original. We are the first to show that the LBP process can be inverted and present a novel algorithm to perform the reconstruction, resulting in an approximation of the original image that is both visually appealing and completely matches the...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.