Results 11 to 20 of about 9,000,286 (286)

Segmentation in scale space

open access: yes, 1995
A segmentation scheme based on tracing objects and borders through scale space is proposed. Scale space allows to create a hierarchical representation of input data which can be used to tessellate input space into objects with closed and orientable borders. For analyzing the structure of scale space, a neural network approach using synchronizing neural
Rolf Henkel
openaire   +3 more sources

On the axiomatic foundations of linear scale-space [Elektronisk resurs] : Combining semi-group structure with causality vs. scale invariance

open access: yes, 1996
The notion of multi-scale representation is essential to many aspects of early visual processing. This article deals with the axiomatic formulation of the special type of multi-scale representation known as scale-space representation.
Lindeberg, Tony,
core   +9 more sources

Colour Morphological Scale-Spaces for Image Segmentation [PDF]

open access: yesProcedings of the British Machine Vision Conference 2005, 2005
Morphological scale-spaces have become an important tool for analysing greyscale images. However, their extension to colour images has proven elusive until recently. In this paper an original evaluation of two recently proposed colour sieves is presented, both algorithmically and in terms of their computational and segmentation performance.
David Gimenez, Adrian N. Evans
openaire   +2 more sources

Scale Space Operators on Hierarchies of Segmentations [PDF]

open access: yes, 2013
A hierarchy of segmentations(partitions) is a multiscale set representation of the image. This paper introduces a new set of scale space operators or transformations on the space of hierarchies of partitions. An ordering of hierarchies is proposed which is endowed by an ω-ordering based on a global energy over the classes of the hierarchy.
Kiran, Bangalore Ravi, Serra, Jean
openaire   +3 more sources

Multi-scale Gaussian representation and outline-learning based cell image segmentation [PDF]

open access: yes, 2013
BACKGROUND: High-throughput genome-wide screening to study gene-specific functions, e.g. for drug discovery, demands fast automated image analysis methods to assist in unraveling the full potential of such studies.
Rämö, P.   +11 more
core   +1 more source

Unsupervised colour image segmentation using dual-tree complex wavelet transform [PDF]

open access: yes, 2010
In this paper we present an effective unsupervised colour image segmentation algorithm which uses multiscale edge information and spatial colour content. The multiscale edge information is extracted using the dual-tree complex wavelet transform.
Tjahjadi, Tardi, Çelik, Turgay
core   +1 more source

Colour saliency-based parameter optimisation for adaptive colour segmentation [PDF]

open access: yes, 2009
In this paper we present a parameter optimisation procedure that is designed to automatically initialise the number of clusters and the initial colour prototypes required by data space partitioning techniques.
Paul F. Whelan   +3 more
core   +1 more source

HT-Net: A Hybrid Transformer Network for Fundus Vessel Segmentation

open access: yesSensors, 2022
Doctors usually diagnose a disease by evaluating the pattern of abnormal blood vessels in the fundus. At present, the segmentation of fundus blood vessels based on deep learning has achieved great success, but it still faces the problems of low accuracy ...
Xiaolong Hu, Liejun Wang, Yongming Li
doaj   +1 more source

Scale-Space Autoencoders for Unsupervised Anomaly Segmentation in Brain MRI [PDF]

open access: yes, 2020
Brain pathologies can vary greatly in size and shape, ranging from few pixels (i.e. MS lesions) to large, space-occupying tumors. Recently proposed Autoencoder-based methods for unsupervised anomaly segmentation in brain MRI have shown promising performance, but face difficulties in modeling distributions with high fidelity, which is crucial for ...
Christoph Baur   +3 more
openaire   +2 more sources

Scale-space for empty catheter segmentation in PCI fluoroscopic images [PDF]

open access: yesInternational Journal of Computer Assisted Radiology and Surgery, 2017
In this article, we present a method for empty guiding catheter segmentation in fluoroscopic X-ray images. The guiding catheter, being a commonly visible landmark, its segmentation is an important and a difficult brick for Percutaneous Coronary Intervention (PCI) procedure modeling.In number of clinical situations, the catheter is empty and appears as ...
Bacchuwar, Ketan   +3 more
openaire   +4 more sources

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