A novel leak localization method for multi section pipelines is presented. Based on normal operation flowing thermodynamic pressure drop patterns along the pipeline, the system continuously compares withthe measured ...
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In this work we assume a frontal view of a face for the lips shape extraction, then the first step is locate a face inside a digital image, for this task we use techniques based in color to extract only the pixels wit...
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the proceedings contain 64 papers. the special focus in this conference is on Mixed Reality, Computer Games, Image Processing, Mesh and Modeling. the topics include: A handheld augmented reality game system with dynam...
ISBN:
(纸本)3540748725
the proceedings contain 64 papers. the special focus in this conference is on Mixed Reality, Computer Games, Image Processing, Mesh and Modeling. the topics include: A handheld augmented reality game system with dynamic environment;a multimodal ambient display on the table exploiting five senses convergence;measuring game-play performance and perceived immersion in a domed planetarium projection environment;identification withthe player character as determinant of video game enjoyment;generalized minimum-norm perspective shadow maps for anti-aliased shadow rendering in 3d computer games;an algorithm for seamless image stitching and its application;a new algorithm for trademark image retrieval based on sub-block of polar coordinates;image composition with blurring effect from depth of field;a new progressive mesh with adaptive subdivision for LOD models;topology-consistent design for 3d freeform meshes with harmonic interpolation;implementation and optimization issues of the triangular patch-based terrain system;procedural modeling of residential zone subject to urban planning constraints;concept and construction of an interactive folktale system;a role casting method based on emotions in a story generation system;using narrative cases to author interactive story content;multi-track scratch player on a multi-touch sensing device;application MDA in a collaborative modeling environment;user studies of intergenerational computer entertainment;video affective content recognition based on genetic algorithm combined hmm;video processing and retrieval on cell processor architecture and a practical framework for virtual viewing and relighting.
In multiple object tracking, the confusion caused by occlusion and similar appearances is an important issue to be solved. In this paper, trackability is proposed to measure how well given features can be used to find...
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ISBN:
(纸本)9783540741954
In multiple object tracking, the confusion caused by occlusion and similar appearances is an important issue to be solved. In this paper, trackability is proposed to measure how well given features can be used to find the correspondence of any given object in videos with multiple objects. Based on the analysis of trackability and computational complexity of the features under various occlusion conditions, a dynamic feature method cascade is presented to match the objects in consecutive frames. the cascade is composed of three tracking features: appearance;velocity and position. these features are enabled or disabled online to reduce computational complexity while obtaining similar trackability. Experiments are conducted on 27062 frame occlusion objects, in the cases of good trackability, our experiments can obtain high succussful tracking rate with low computation burden, and in the cases of poor trackability, our estimation of trackability and confusion matrix can explain why they can not be tracked well.
Since DNA-dimer analysis has demonstrated to provide a very conserved patternthat has been suggested as a genome signature, in this paper we present a computational study of DNA-dimer distribution in a collection of ...
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ISBN:
(纸本)9783540766308
Since DNA-dimer analysis has demonstrated to provide a very conserved patternthat has been suggested as a genome signature, in this paper we present a computational study of DNA-dimer distribution in a collection of Retroviral genomes. this analysis is based on two main steps: the generation of the target dataset, in this step, the DNA-dimer distribution variables are calculated and transformed to categorical data using Fuzzy Sets. And the induction of a Bayesian Network from the dataset. this induction technique is based on Genetic Algorithms. We have found interesting causal relationships between the DNA-dimer distribution variables and a set of chemical variables. these results could provide new directions in future Retroviral genomic investigations. the computational methodology presented in this paper has demonstrated to be an interesting tool for the study and the analysis of genomic sequences.
Classic mosaic is one of the oldest and most durable art forms. there has been a growing interest in simulating classic mosaics from digital images recently. To be visually pleasing, a mosaic should satisfy the follow...
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ISBN:
(纸本)9783540741954
Classic mosaic is one of the oldest and most durable art forms. there has been a growing interest in simulating classic mosaics from digital images recently. To be visually pleasing, a mosaic should satisfy the following constraints: tiles should be non-overlapping, tiles should align to the perceptually important edges in the underlying digital image, and orientation of the neighbouring tiles should vary smoothly across the mosaic. Most of the existing approaches operate in two steps: first they generate tile orientation field and then pack the tiles according to this field. However, previous methods perform these two steps based on heuristics or local optimisation which, in some cases, is not guaranteed to converge. Some other major disadvantages of previous approaches are: (i) either substantial user interaction or hard decision making such as edge detection is required before mosaicing starts (ii) the number of tiles per mosaic must be fixed beforehand, which may cause either undesired overlap or gap space between the tiles. In this work, we propose a novel approach by formulating the mosaic simulating problem in a global energy optimisation framework. Our algorithm also follows the two-step approach, but each step is performed with global optimisation. For the first step, we observe that the tile orientation constraints can be naturally formulated in an energy function that can be optimised withthe a-expansion algorithm. For the second step of tightly packing the tiles, we develop a novel graph cuts based algorithm. Our approach does not require user interaction, explicit edge detection, or fixing the number of tiles, while producing results that are visually pleasing.
the following topics are dealt with: information science; computer architecture; VLSI; image processing; patternrecognition; mobile computing; software engineering; knowledge discovery; agent based systems; data mini...
the following topics are dealt with: information science; computer architecture; VLSI; image processing; patternrecognition; mobile computing; software engineering; knowledge discovery; agent based systems; data mining; data warehousing; distributed computing; middleware architecture; e commerce; software metrics and speech processing.
the theory that electoral college is more stable than direct popular vote is applied in face recognition. By simply adopting most traditional PCA approach, the experiments in this paper show a remarkably higher recogn...
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the theory that electoral college is more stable than direct popular vote is applied in face recognition. By simply adopting most traditional PCA approach, the experiments in this paper show a remarkably higher recognition rate than any known algorithm is reached with electoral college strategy on known FERET datasets. It indicates that a significant breakthrough can be expected by embedding electoral college with more effective face recognition algorithms.
In this article we present a hybrid approach for automatic summarization of Spanish medical texts. there are a lot of systems for automatic summarization using statistics or linguistics, but only a few of them combini...
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ISBN:
(纸本)9783540766308
In this article we present a hybrid approach for automatic summarization of Spanish medical texts. there are a lot of systems for automatic summarization using statistics or linguistics, but only a few of them combining both techniques. Our idea is that to reach a good summary we need to use linguistic aspects of texts, but as well we should benefit of the advantages of statistical techniques. We have integrated the Cortex (Vector Space Model) and Enertex (statistical physics) systems coupled withthe Yate term extractor, and the Disicosum system (linguistics). We have compared these systems and afterwards we have integrated them in a hybrid approach. Finally, we have applied this hybrid system over a corpora of medical articles and we have evaluated their performances obtaining good results.
the paper presents a research on detection of cardiac structures in echocardiography gray images from fetal hearts. patternrecognition and a density probability function of scales of gray is used for search cardiac s...
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the paper presents a research on detection of cardiac structures in echocardiography gray images from fetal hearts. patternrecognition and a density probability function of scales of gray is used for search cardiac structures and then compared withpattern structures previously stored. the Bhattacharyya coefficient is used in order to obtain the similarity to define the choice of the structures of interest. the method uses also texture features to isolate the region of interest inside the ultrasound image to improve the results and performance. the prototype developed to evaluate the method and some validated results are presented.
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