نتایج جستجو برای: zero contours

تعداد نتایج: 161260  

2007
Konstantinos Karantzalos

In this paper, we propose a novel mathematical model to address segmentation from an aerial and satellite imagery. Segmentation is performed through the consistent recovery of the zero iso-surfaces of a level set function towards image’s foreground (desired object for extraction) and background discrimination. The level set method is embedded in a geodesic active contours variational formulatio...

1999
Davi Geiger Krishnan Kumaran Hsing-Kuo Kenneth Pao Nava Rubin

We have been developing a stochastic model for figure-ground separation[9][3][12]. The model selects/constructs the foreground with preference for figures with “more convex” shapes. When these models are applied to illusory figures ([7]) they yield perceptually accurate selection of figure and background. The approach is based on an “entropy” measure of a region dijfksion Markov model from a se...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2005
Manish Singh Jacqueline M Fulvio

Computing the shapes of object boundaries from fragmentary image contours poses a formidable problem for the visual system. We investigated the extrapolation of contour shape by human vision. Measurements of extrapolation position and orientation were taken at six distances from the point of occlusion, thereby yielding a detailed representation of the extrapolated contours. Analyses of these me...

Journal: :Journal of Algorithms 1981

Journal: :Études littéraires 2005

Journal: :Perception & Psychophysics 1982

Journal: :CVGIP: Image Understanding 1991
Jian Wu Kwangyoen Wohn

Image intensity and edge are two major sources of information for estimating the motion in the image plane. The 2-D motion obtained by analyzing the deformation of intensity and/or edges is used to recover the 3-D motion and structure. In this paper we show that the motion defined by the image intensity differs from the motion revealed by the (zerocrossing) edge. Understanding of this discrepan...

Journal: :IEEE Transactions on Image Processing 2014

Journal: :IEEE Transactions on Pattern Analysis and Machine Intelligence 2008

Journal: :پژوهش های جغرافیای انسانی 0
مهدی مدیری دانشیار دانشگاه صنعتی مالک اشتر

extended abstractintroductiona map is a drawing ground features on one side of the paper. the cartographic maps are representations of the earth upon a flat surface in the smaller scale than it’s true. large scale maps cover relatively small regions in great detail and small scale maps cover large regions such as nations, continents and the whole globe. logical connection between the features a...

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