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We present a novel 3D ear shape matching algorithm. Firstly, we compute the saliency value of every point in 3D ear point cloud using the Gaussian-weighted average of the mean curvature, sort the points in accordance with their saliency value, Then we get the salient key points set using the poisson sampling. Finally, we fit the neighborhood of each salient key point using quadratic principal manifold,...
Benchmarks are popular in many fields, but rare or absent in the CSCW research. Performance based evaluation would be a good choice if given a certain set of specific tasks. As the first step to promote a benchmark, we conduct this brief review about groupware evaluation by performance of specific tasks. Particularly, we collect commonly used specific tasks and classify them into four categories:...
Text image is the most universal computer art form in the world, it is originally required by the text-based communication channels for presenting images. It is even popular due to its special artistic style. This paper introduce the knowledge of text image, and do some research on the generation of text image, and it presents a novel method to generate text image, Some results are shown to demonstrate...
Aircraft need detect landing flag when landing. By using invariant moment method, the aircraft can recognize the image including landing flag. A modified moment method based on Hu's invariant moment is applied to analyze features of digital images using invariant moment theory and technology, with translation, rotation and scale invariance on the research of geometric invariant moments.
Thanks to the continued development of tree search algorithms, of more precise evaluation functions, and of faster hardware, computer Go and computer Shogi have now reached a level of strength sufficient for most amateur players. However, the research about entertaining and coaching human players of board games is still very limited. In this paper, we try first to define what are the requirements...
This paper presents a method to convert Thai decorative pattern (Lai-Thai) from a hand-drawn picture into a vector graphic image. The proposed method samples a series of points from a scanned image. Then a Progressive Iterative Approximation (PIA) algorithm is used to plot a corresponding Bézier curve that fits sampling points. Examples of curve fitting to Thai famous decorative patterns, Kra-Jung-Taa-Aoy...
The aim of this study is to investigate the question: “Can Information and Communications Technology (ICT) helps to improve primary school students' geometry achievements for rectangles?” The applied educational software consisted of a story and several activities with and without the use of computers which were designed following the background of Realistic Mathematics Education for geometry concepts;...
This paper examines the conceptual synthesis processes in conjunction with assistive computational support for individual and collaborative interaction. We present findings from two educational design interaction experiments in product creation processing (PCP). We focus on metacognitive aspects of interaction, externalization and, representation to obtain better performance, shorter ideation time...
The use of hand gestures provides an attractive alternative to cumbersome interface devices for human-computer interaction (HCI). However, the number of hand gestures has not been fully explored for HCI application. It is necessary to achieve more gestures as the command of interface. This paper proposed a method to recognize nine different hand gestures. Using camera to get images of people wearing...
Using mobile robots in the engineering education is a well-accepted and practical way to teach in the undergraduate programs. In the literature, several different cases are reported to show the adaptation of some robots. This paper describes how mobile robots and basic image processing algorithms might be combined in the MATLAB programming environment to provide a more efficient learning and simulation...
In Bangla alphabet, most of the characters share same features and such similarity misleads a recognizer as it makes decision based on measures of absolute difference. A preprocessing step called ‘scrambling’ and modification of existing grouping scheme are proposed to decrease the inter-character similarity among Bangla characters. The theory behind this proposal is originally inspired by experiments...
This paper describes an option how to detect a desired Java code snippet in a large number of Java source files. The scripting language Scripthon is used to describe the desired section. Next, from this piece, an abstract tree is created, and it is compared to the other trees which are created from the Java source codes. The Java Compiler API is used to obtain the trees from the Java source codes.
This paper presents a method to integrate the free vibration theory and the computer graphical technique for displaying the mode shapes of a three-dimensional framework, so that one may see the real-time animation of the structural mode shapes on the computer screen. Because the graphical parameters, such as view angle, position of the projection plane, …, etc., cannot be changed arbitrarily (at any...
By using molecular dynamics (MD), we study the course of behavior and constitution of lipid vesicle in order to be able to recreate the measured results obtained in previous experiments. Simulated lipid vesicles are composed of thousands of DSPC lipid molecules. All preformed vesicles have a mean radius of around nine nanometers and interact with the watery environment. We use coarse grain molecular...
This paper proposes a novel method for the detection and segmentation of pectoral muscle in mammograms using fractal-based analysis. The region of pectoral muscles containing the brightest pixels has an adverse effect, during the detection of microcalcifications in a mammogram and hence detection and segmentation of pectoral muscle is deemed as an important preprocessing step. This proposed technique...
Human pressure on the environment has steadily increased throughout the last few decades, especially in Southeast Asia. This part of the world is also particularly rich in biodiversity and an appropriate biological knowledge is in high demand by the civil society which is actually asking for a “greener” life and the questions of quality of life are rising more and more. Unfortunately, plants recognition/identification...
Significant improvements have been recently achieved in both quality and realism of computer generated characters, which are nowadays often very difficult to be distinguished from real ones. However, generating highly realistic facial expressions is still a challenging issue, since synthetic expressions usually follow a repetitive pattern, while in natural faces the same expression is usually produced...
The work described in the paper deals with realization of a digit recognition system for the visually impaired persons. The input to the system is pressure sensor data obtained from a sensor pad with 256 capacitive pressure sensors. The objective of the system is to recognize correctly the 2-D shape of a digit which is placed on the above sensor pad. The problem is extremely challenging because the...
The field of sketching interface design in regards to video game is relatively young and has not been investigated in great depth. Freepad is a custom paper-based MIDI musical interface. We describe an extension to Freepad that supports user customization for real time strategy games. Using only a webcam, a pen and a sheet of paper, players can design their own interface by drawing shapes and linking...
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...
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