this paper deals with parallelization and implementation aspects of PDE based image processing models for large cluster environments with distributed memory. As an example we focus on nonlinear isotropic diffusion fil...
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作者:
Liu, WPrinet, VChinese Acad Sci
Inst Automat Sino French lab Informat Automat & Appl Math Natl Lab Pattern Recognit Beijing Peoples R China
this paper proposes a probability model and efficient scheme to extract buildings object from high-resolution panchromatic image in dense urban area. the overall idea of this work is to segment the image into regions,...
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ISBN:
(纸本)0780390504
this paper proposes a probability model and efficient scheme to extract buildings object from high-resolution panchromatic image in dense urban area. the overall idea of this work is to segment the image into regions, to treat all extracted regions' contours as candidates, and to make use of specific probability model to select 'true' buildings. Discriminative features that characterize buildings are proposed. Application is performed on Quickbird images over Beijing city.
We present a variational approach to motion estimation of instationary fluid flows. Our approach extends prior work along two directions;(i) the full incompressible Navier-Stokes equation is employed in order to obtai...
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Head detection is an important, but difficult task, if no restrictions such as static illumination, frontal face appearance or uniform background can be assumed. We present a system that is able to perform head detect...
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We describe the first efficient algorithm for simultaneously matching multiple rectangular patterns of varying sizes and aspect ratios in a rectangular text. Efficient means significantly better asymptotically than kn...
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ISBN:
(纸本)0897915917
We describe the first efficient algorithm for simultaneously matching multiple rectangular patterns of varying sizes and aspect ratios in a rectangular text. Efficient means significantly better asymptotically than known algorithms that handle one height, width, or aspect ratio at a time. Our algorithm features an interesting use of multidimensional range searching, as well as new adaptations of several known techniques for two dimensional string matching. We also extend our algorithm to a dynamic setting where the set of patterns can change over time.
this paper is based on the work carried out in the framework of the Verbmobil project, which is a limited-domain speech translation task (german-English). In the final evaluation, the statistical approach was found to...
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A vision based head tracking approach is presented, combining foreground information with an elliptical head model based on the integration of gradient and skin-color information. the system has been developed to dete...
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this paper presents SAAF, a Semantic Accessibility Assessment Framework for personalised Web accessibility assessment procedures. We define four domains as a way to decouple general accessibility concepts and semantic...
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An approach to object recognition by visual mobile robots is introduced. It eliminates the need for a calibration of the robot and of the vision system;it uses no world coordinates, and compensates perspective distort...
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Differential methods are frequently used techniques for optic flow computations. they can be classified into local methods such as the Lucas-Kanade technique or Big252;n's structure tensor method, and into globa...
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