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Venn & Euler diagrams are well-defined mathematical diagram types, which are the major representation methods of Set Theory. Although understanding of different diagram types such as charts and coordinate graphs has been addressed, no research has been done for Venn and Euler diagram interpretation from an image. Venn and Euler Diagrams exist in various media types such as printed format in books,...
Data mining has gained much importance in the field of research these days. It makes perfect blend for analyzing data of any fields and provide decision based output. Data generation and storage these days are done at high speed. Non stationary systems play holistic role in providing such data. Availability of such data creates scope of analysis for researchers. Such data which are continuous, unbounded,...
In view of today's information available, recent progress in data mining research has lead to the development of various efficient methods for mining interesting patterns in large databases. It plays a vital role in knowledge discovery process by analyzing the huge data from various sources and summarizing it into useful information. It is helpful for analyzing the volumes of data in different domains...
Recent advances in using computer with different fields of sciences produced huge amounts of data. These data represent as an analysis tool and key to overcome many problems. Clustering is a primary process to analyze the data as well as, it's a preprocessing step before other techniques like classification. Density-Based clustering algorithms have advantages like clustering any arbitrary shapes and...
In this paper, we propose a method for representing “neighborhoods” of moving objects such as people. By using neighborhoods, it is possible to determine whether the spatial relations between objects and their surrounding spatial information are strong. It can be said that a neighborhood is the spatial area of an object's attention, interest or concern. It is preferable that neighborhoods move while...
This paper presents a method of fault polygon extraction and smoothing. It uses boundary tracking algorithm to extract breakpoint locations to form polygon file, and uses parameters of angles between fault polygonal lines as well as edge length and so on to do the work of smoothing, on condition that it keeps its original shape. This method improves the visual effect and aesthetic extent and offers...
Although several algorithms for computing the reverse skyline queries have been proposed, they are developed only for point datasets and cannot handle reverse skyline queries over arbitrary spatial objects such as regions, polygons or lines. In this paper, we introduce a novel method for processing reverse skyline queries over arbitrary spatial objects. The proposed method also processes reverse skyline...
Aiming at assisting the document inspectors to identify the seal imprint time, a classification identification method is proposed based on BP NN (Neutral Network). This paper built a seal stamp characteristics index system aided by the recognition experience of famous inspectors, then, extracted and quantized the characteristic parameters. With these parameters, building BP NN training and testing...
The rejoining of oracle bone inscription is an important process of oracle bone arrangement. In this paper, we proposed the algorithms for contour information extracting and tracking from these shell images and vector extracting algorithms of the feature of the contour fragments. We proposed the technical route and implementation method of establishing oracle shell images database, and developed a...
Aerospace engineering optimization process in real multidisciplinary design problems is done by multi-objective optimization tools. Multi-objective optimization tools in aerospace structures have to face the huge number variables and objectives. High number of variables cases high computation cost to optimization process. In this regard a variable reduction tool which could remove the less effective...
Fractal is the theory of studying the geometry and rules behind the nonlinear complex systems with self-similarity structure that widely exists in the nature and IFS is the key technology for constructing fractal images. This paper studies various computer construction algorithms for generating fractal images based on IFS attractor and their application range and limitation are analyzed. The deterministic...
XML queries are based on path expressions which are equal to a combination of some elements connected to each other in a tree pattern structure, called Tree Pattern Query (TPQ). Therefore, the main operation in XML query processing is to find the nodes that match the given QTP in the document. A number of methods are offered for QTP matching, but the majority of these methods for accessing to all...
This paper presents a system to monitor the wear process in machines using computer vision and image processing techniques applied to wear particle analysis. Particles are classified using their visual attributes to predict wear failure modes in engines and other machinery. The aim of the current work is to develop an automated system to classify wear particles and thereby predict wear failure modes...
After analyzing the curvature expression, the inflection points were given by the known planar cubic Bezier control polygon information. Based on that, we proposed an algorithm that can quickly and accurately obtain the shape characteristic points of curve. Experimental results show that the algorithm is rapid, accurate, and robust.
This article addresses issues related to traces modelling and visualization in synchronous collaborative learning. The objective is to propose models and tools for representing, transforming, sharing and visualizing traces of users' experiences. The traces here represent the users' activities in their interactions with the learning platform. Our proposition is based on reflexive learning defined as...
In this paper we propose a stroke recognition method for online handwritten Hangul recognition system. The proposed system extracts a distance-dependent curvature from two-dimensional original stroke data and achieves elastic matching between distance-dependent curvatures of reference and test characters. Elastic curvature matching has lower computational requirement than existing 2D-to-2D elastic...
From the esthetic aspects of the users,this article mainly proposes the design method of the product form esthetic feeling that is based on the users' aesthetic levels. There are three levels to the users aesthetic feeling: The aesthetic feeling level X conveys the visual order and simplification of form, the Y aesthetic feeling express the product's purpose, function,the thought communication or...
A collaborative interior design system is designed based on virtual reality. The techniques of X3D is adopted in this system, and the virtual scenes and human-computer interaction have been realized.
With the operator representation of Bezier curves, we first derive the sufficient and necessary conditions of a ruled surface being a developable surface, where the ruled surface is generated from two Bezier curves of degree m and n respectively as its boundary curves. Then we present a new method for designing the developable surface of degree (2, 3) with four corner points and one free control vertex...
This paper, aiming to improve the traditional design process, proposes a method that designers provide a basic conceptual form scheme of the products, but a detailed form is modified by the users according to the locally changeable two or three dimensional models released on the internet, and the needed several product form schemes can be achieved through statistic analysis of the feedbacks from the...
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