Results 271 to 280 of about 357,344 (305)

Image segmentation by analysis of scale-space

Proceedings. XV Brazilian Symposium on Computer Graphics and Image Processing, 2003
We present a technique in image segmentation based on a hierarchical analysis of scale-space. The image hierarchy is a tree of critical lakes and provides a set of nested partitions. We analyze the scale-space from fine to coarse levels according to specific attributes.
Garcia de Carvalho, Marco António, Couprie, Michel, de Alencar Lotufo, Roberto   +2 more
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Segmenting multisensor aerial images in class–scale space

Pattern Recognition, 2001
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Lofy, Brian, Sklansky, Jack
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Motion-driven object segmentation in scale-space

1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258), 1999
In this paper we present a method for motion segmentation, in which accurate grouping of pixels undergoing the same motion is targeted. In the presented technique true object edges are first obtained by combining anisotropic diffusion of the original image with edge detection and contour reconstruction in the inherent scale-space.
E.M. Izquierdo, M. Ghanbari
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The Segmentation of Images via Scale-Space Trees

Procedings of the British Machine Vision Conference 1998, 1998
A useful representation of an image would be an object tree in which nodes represent objects, or parts of objects, and which includes at least one node that, together with its children, represents each object: a grandmothernode. It is shown that scale-trees, obtained from greyscale images, approximate such a tree.
J. A. Bangham, J. R. Hidalgo, R. Harvey, G. Cawley   +3 more
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Scale Space Hierarchy of Segments

2009
In this paper, we develop a segmentation algorithm using configurations of singular points in the linear scale space. We define segment edges as a zero-crossing set in the linear scale space using the singular points. An image in the linear scale space is the convolution of the image and the Gaussian kernel.
Haruhiko Nishiguchi, Atsushi Imiya, Tomoya Sakai   +2 more
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Acoustic-phonetic segment classification and scale-space filtering

ICASSP '87. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
Scale-space filtering represents one method for automatically extracting both coarse and fine-grained units from the speech signal. We examine the acoustic-phonetic structure of segments obtained by scale-space filtering of cochleagrams, and report on the correspondences between scale-space segments which are automatically derived and hand-marked ...
M. Withgott, S. Bagley, R. Lyon, M. Bush
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Color image segmentation by scale-space image analysis

2007 International Conference on Wavelet Analysis and Pattern Recognition, 2007
An image analysis method has been proposed to segment color images. The method is capable of segmenting color images based on watershed transform and scale-space analysis of the images. We analyze hierarchical, geometric properties and the hue uniformity measure of the tree of scale-space and show the experimental results for several biological and ...
null Zhi-Qiang Wei, null Miao Yang
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Segmentation of images of yeast cells by scale-space analysis

16th Brazilian Symposium on Computer Graphics and Image Processing (SIBGRAPI 2003), 2004
We present an hierarchical approach to segment images of yeast cells based on watershed and space-scale analysis. Yeasts belong to an important fungi class and the performance of bioreactors and other chemical processes are greatly influenced by their morphological character.
Garcia de Carvalho, Marco António, de Alencar Lotufo, Roberto, Couprie, Michel   +2 more
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Bifurcation of Segment Edge Curves in Scale Space

2012
In this paper, we aim to develop a criterion to select scale parameters, which control pre-smoothing for edge detection. We first formalise the Canny edge detector which extracts the zeros of bilinear form of the first- and the second-order derivatives of image intensity.
Tomoya Sakai, Haruhiko Nishiguchi, Hayato Itoh, Atsushi Imiya   +3 more
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Size-adapted microcalcification segmentation in mammography utilizing scale-space signatures

Computerized Medical Imaging and Graphics, 2010
The purpose of this study is size-adapted segmentation of individual microcalcifications in mammography, based on microcalcification scale-space signature estimation, enabling robust scale selection for initialization of multiscale active contours. Segmentation accuracy was evaluated by the area overlap measure, by comparing the proposed method and two
Nikolaos S, Arikidis, Anna, Karahaliou, Spyros, Skiadopoulos, Panayiotis, Korfiatis, Eleni, Likaki, George, Panayiotakis, Lena, Costaridou   +6 more
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