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Sign language is used by the deaf and dumb people as their mother tongue. Sign Language helps to bridge the gap between hearing-impaired people and hearing people. Research work on Indian sign language is very limited. The main reason behind lack of Research is that there is no proper grammar of ISL and sign language is not same throughout the world. This paper presents a system which generates HamNoSys...
Twenty haptics-based computer applications (apps) have been created to utilize a low-cost, force feedback haptic device, the Novint Falcon, to provide students with tactile and kinesthetic sensations while learning about math and science. These low-cost apps, developed specifically for students with visual impairments (yet practical for all students), add to the accessible resources available for...
This paper presents two approaches to externally influence a team of robots by means of time-varying density functions. These density functions represent rough references for where the robots should be located. Recently developed continuous-time algorithms move the robots so as to provide optimal coverage of a given the time-varying density functions. This makes it possible for a human operator to...
The behavior of complex aerospace systems is governed by numerous parameters. For safety analysis it is important to understand how the system behaves with respect to these parameter values. In particular, understanding the boundaries between safe and unsafe regions is of major importance. In this paper, we describe a hierarchical Bayesian statistical modeling approach for the online detection and...
This paper presents how to take advantage of the interactive capabilities of augmented reality (AR) technology to deploy assessment activities into AR-based learning environments. It shows how to combine physical and digital spaces to design authentic, meaningful tasks where students can put into practice their skills for solving problems. The use of the framework in real scenarios illustrates its...
In this paper, we propose a scheme on how to design a smart unicursal game for children on computers or other portable devices. We explain how to implement the game according to the computer graphics theory. In our design, children first select types of unicursals. Then, a unicursal picture with the selected type is adaptively sampled by a versatile algorithm we designed, and subsequently, a scattered...
Large scale missions in unpredictable and unstable underwater environments are beyond the capabilities of a single intelligent and complex robot. Relying on one robot is far from optimal as loss of the unit means failure of the whole mission. On the contrary, robotic swarms depend on large numbers of simple, cheap, and error-prone robots that exhibit global desirable features like fault-tolerance,...
In their hearts, computers, smartphones, and other mobile devices are simply quantifying information and sewing it together however we tell them to. But these devices aren't mere objects; they are the nervous system for a networked world. Their effects are broad, deep, and often quite difficult to discern, extending far off the desktop into our everyday lives.
Finding a method which allows a computer recognition to be close to human recognition is a goal of many works in the present. We have set this goal too. According to us, we need to find function for simple recognition of shapes in the images as first step of this goal. Result of this method provides input of our system of recognition. System form depends on the result of shape recognition method....
In the design of oil and gas platforms, the layout problem is similar to both the bin packing problem and the multiprocessor scheduling problem, both of which are NP-hard. Yet, people are able to use their knowledge and experience to layout equipment in a close to optimal way. The question discussed here is whether this knowledge can be captured in a Knowledge Based Engineering-system, and by extension,...
One formulation to automatically compute the number of holes of a 2-D binary object is introduced in this paper. This formulation is useful for both 4-connected and 8-con-nected objects. The correctness of the functioning of the formulation is also established theoretically. Results with a set of images are provided to demonstrate the utility and validity of the proposed formulation. To end up, our...
This paper is devoted to the comparison of the numerically simulated Chua's circuit and the real circuit. The aim of the research was to figure out the factors affecting the computer simulation accuracy, and to find the ways to improve it. It was discovered that the most influence is exerted by an inaccuracy of the nonlinear Chua's diode characteristic measurement, a numerical integration method used...
Edge detection remains a challenging task in many applications even with the abundance of commonly used methods such as Sobel, Robert, Prewitt, Canny, and Cellular Automata. In this paper, a new method is proposed for edge detection using morphological operations and utilizing erosion processes to identify the edges in an image. In this work we propose to use morphological operators of disk shape...
The ways in which we use and develop tools shape human destiny. This is especially true when such tools are used in harmful ways--as with the recent rash of cyberattacks.
This paper presents an application of 3d-reconstruction and graph theory in the field of archaeology. The classification and reconstruction of ancient pots and vessels out of fragments (so-called sherds) is an important aspect of archaeological research work. Up to now this is a time consuming, inaccurate, and subjective task which leads to tons of unclassified fragments in archives. Computer aided...
Space-filling curves have intrigued both artists and mathematicians for a long time. They bridge the gap between aesthetic forms and mathemtical geometry. To enable construction by computer, an efficient recursive algorithm for the generation of space-filling curves is given. The algorithm is elegant, short and considerably easier to implement than previous recursive and non-recursive algorithms,...
Signal decimation aimed at optimal spectral packing has a variety of applications in areas ranging from array processing to image processing. In this article we propose and discuss a new method for determining decimation grid and prefilter that best fit the spectral extension of any 2D signal defined on an arbitrary sampling lattice. The method has been implemented and tested on digital images in...
As smart phones and tablets are becoming ubiquitous and taking over as the primary choice for accessing the Internet worldwide, ensuring a secure gateway to the servers serving such devices become essential. CAPTCHAs play an important role in identifying human users in internet to prevent unauthorized bot attacks. Even though there are numerous CAPTCHA alternatives available today, there are certain...
The development of sensemaking support systems requires that one cares about knowledge representation. Motivated by the fact that no single representation method is ideally suited by itself for all tasks, the authors propose a collection of knowledge representation artifacts appropriate for processing in computer-based support systems for situation analysis. The approach described makes it possible...
Illustrators who have some drawing experience can sometimes draw an ideal stroke repeatedly. However, they cannot always reproduce an ideal stroke that they have drawn, because they do not understand how they moved their own hands while drawing it. Therefore we proposed a new drawing learning support system based on present- ing the ideal stroke motion of the learners (past brilliant learner- self...
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