Pavement distress and wear detection is of prime importance in transportation engineering. Due to degradation, potholes and different types of cracks are formed and they have to be detected and repaired in due course....
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ISBN:
(纸本)9781479929146
Pavement distress and wear detection is of prime importance in transportation engineering. Due to degradation, potholes and different types of cracks are formed and they have to be detected and repaired in due course. Estimating the amount of filler material that is needed to fill a pothole is of great interest to prevent any shortage or excess, thereby wastage, of filler material that usually has to be transported from a different location. Metrological and visualization properties of a pothole play an important role in this regard. Using a low-cost Kinect sensor, the pavement depth images are collected from concrete and asphalt roads. Meshes are generated for better visualization of potholes. Area of pothole is analyzed with respect to depth. The approximate volume of pothole is calculated using trapezoidal rule on area-depth curves through pavement image analysis. In addition pothole area, length, and width are estimated. The paper also proposes a methodology to characterize potholes.
Forensic statements are often unstructured, intricate, and thus difficult to interpret and assess. This is due to the varied nature and format of how interviews with victims, witnesses, or suspects are conducted. It i...
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ISBN:
(纸本)9781467389426
Forensic statements are often unstructured, intricate, and thus difficult to interpret and assess. This is due to the varied nature and format of how interviews with victims, witnesses, or suspects are conducted. It is even more difficult for police investigators, lawyers or other legal practitioners to grasp intuitively and accurately the key information pertaining within the varied statements. This research investigates the opportunities in the convergence of linguistic approaches to extracting and reconstructing the cognitive structure, i.e. "Text-Worlds", in a statement, and the computerised operational settings for enabling effective and hopefully more accurate interpretation of forensic discourse through visualisation.
We present a new algorithm to explore and visualize multivariate time-varying data sets. We identify important trend relationships among the variables based on how the values of the variables change over time and how ...
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We present a new algorithm to explore and visualize multivariate time-varying data sets. We identify important trend relationships among the variables based on how the values of the variables change over time and how those changes are related to each other in different spatial regions and time intervals. The trend relationships can be used to describe the correlation and causal effects among the different variables. To identify the temporal trends from a local region, we design a new algorithm called SUBDTW to estimate when a trend appears and vanishes in a given time series. Based on the beginning and ending times of the trends, their temporal relationships can be modeled as a state machine representing the trend sequence. Since a scientific data set usually contains millions of data points, we propose an algorithm to extract important trend relationships in linear time complexity. We design novel user interfaces to explore the trend relationships, to visualize their temporal characteristics, and to display their spatial distributions. We use several scientific data sets to test our algorithm and demonstrate its utilities.
In this paper, we propose a sound source visualization system using time-reversal wave. The proposed system records a sound that is emit in reflective environment using microphone array and visualizes sound sources by...
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This paper aims to present the process of visualizing historic statues of the city of Aberdeen. 3D laser scanning was the main method utilized to obtain the 3D data, which was then transformed into a series of 3D surf...
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ISBN:
(纸本)9781467375689
This paper aims to present the process of visualizing historic statues of the city of Aberdeen. 3D laser scanning was the main method utilized to obtain the 3D data, which was then transformed into a series of 3D surface models. A laser scanner typically has a range of over 100m (300m for the equipment used here), and records data to levels of accuracy almost impossible to achieve using 'traditional' surveying techniques. The data recorded by a scanner takes the form of a 'point cloud', which can be combined with on-site photographs to build up a realistic and accurate virtual model. The paper concludes with discussion of how such data can be readily transferred into industry-standard Architecture, Engineering and Construction (AEC) models, thus, allowing the compilation of a buildings and monuments 'library' available to the city council and to the public for future urban projects and city regeneration. It is argued that the ability to incorporate data extracted from 3D scan-based models will promote the easier implementation of the 3D information within digital arts, architecture, structural engineering or other purposes. The paper represents an interesting collaboration between disciplines from architecture and computing, and provides a practical and innovative case study which sits between technical advances, and electronic and visual arts.
Significant advances have been made to non-intrusive flow field diagnostics in the past decade. Camera based techniques are now capable of determining physical qualities such as surface deformation, surface pressure a...
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To visualize the VAST 2012 Mini Challenge 2 datasets, we use the InfoVis Toolkit (IVTK). Custom visualizations as well as extra interaction capabilities have been added to the toolkit. Custom-made Python scripts are u...
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ISBN:
(纸本)9781467347532;9781467347525
To visualize the VAST 2012 Mini Challenge 2 datasets, we use the InfoVis Toolkit (IVTK). Custom visualizations as well as extra interaction capabilities have been added to the toolkit. Custom-made Python scripts are used for data preprocessing purposes. In this work, we show how visualization tools may be combined to leverage network forensic analysis tasks.
InfoMaps is an informationvisualization tool designed for personal information management and for supporting data analysis. In this paper we briefly discuss the design of InfoMaps and explain its role in finding rele...
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Traditional two-dimensional (2D) and three-dimensional (3D) visualization tools for network security applications often employ a desktop, mouse, and keyboard setup of WIMP (Windows, Icons, Menus, and a Pointer) interf...
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ISBN:
(纸本)9781467364324
Traditional two-dimensional (2D) and three-dimensional (3D) visualization tools for network security applications often employ a desktop, mouse, and keyboard setup of WIMP (Windows, Icons, Menus, and a Pointer) interfaces, which use a serial set of command inputs (e.g., click, rotate, zoom). However, research has shown that multiple inputs (e.g., Microsoft Kinect [8] and multi-touch monitors) could reduce the selection time of objects, resulting in a quicker response time than its traditional counterparts. In this work, we investigate these alternative user interfaces that are "natural" to the user for multiple inputs that reduce response time as a user navigates within a complex three-dimensional (3D) visualization for network security applications. Specifically, we introduce a visualization tool called InterSec, an interaction system prototype for interacting with 3D network security visualizations. InterSec helps developers build and manage gestures that require the coordination of multiple inputs across multiple interaction technologies. To our knowledge, InterSec is the first tool that proposes a system to reduce number of interactions within 3D visualizations for network security tools. Through our evaluation of live Honeynet data and a user study, the results reveal InterSec's ability to reduce the number of interactions to aid in 3D navigation in comparison to the mouse user interface.
The Web has grown from being a global information repository into a worldwide distributed computing environment. This offers the opportunity to carry out data visualization as a Web-based application. In this paper we...
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