User profiles for Jayaram K. Udupa

JKUdupa

Professor of radiological science
Verified email at mail.med.upenn.edu
Cited by 26687

Fuzzy connectedness and object definition: Theory, algorithms, and applications in image segmentation

JK Udupa, S Samarasekera - Graphical models and image processing, 1996 - Elsevier
Images are by nature fuzzy. Approaches to object information extraction from images should
attempt to use this fact and retain fuzziness as realistically as possible. In past image …

[BOOK][B] 3D imaging in medicine

JK Udupa, GT Herman - 1999 - books.google.com
The ability to visualize, non-invasively, human internal organs in their true from and shape
has intrigued mankind for centuries. While the recent inventions of medical imaging …

An objective comparison of 3-D image interpolation methods

GJ Grevera, JK Udupa - IEEE transactions on medical imaging, 1998 - ieeexplore.ieee.org
To aid in the display, manipulation, and analysis of biomedical image data, they usually
need to be converted to data of isotropic discretization through the process of interpolation. …

New variants of a method of MRI scale standardization

LG Nyúl, JK Udupa, X Zhang - IEEE transactions on medical …, 2000 - ieeexplore.ieee.org
One of the major drawbacks of magnetic resonance imaging (MRI) has been the lack of a
standard and quantifiable interpretation of image intensities. Unlike in other modalities, such …

User-steered image segmentation paradigms: Live wire and live lane

AX Falcao, JK Udupa, S Samarasekera… - Graphical models and …, 1998 - Elsevier
… interactions between one of the authors of this paper (Udupa) and Barrett of Brigham Young
University. Udupa introduced some of his graph model and optimum boundary formulations […

On standardizing the MR image intensity scale

LG Nyúl, JK Udupa - … in Medicine: An Official Journal of the …, 1999 - Wiley Online Library
The lack of a standard image intensity scale in MRI causes many difficulties in image display
and analysis. A two‐step postprocessing method is proposed for standardizing the intensity …

Shape-based interpolation of multidimensional objects

SP Raya, JK Udupa - IEEE transactions on medical imaging, 1990 - ieeexplore.ieee.org
A shape-based interpolation scheme for multidimensional images is presented. This scheme
consists of first segmenting the given image data into a binary image, converting the binary …

A framework for evaluating image segmentation algorithms

JK Udupa, VR LeBlanc, Y Zhuge, C Imielinska… - … medical imaging and …, 2006 - Elsevier
The purpose of this paper is to describe a framework for evaluating image segmentation
algorithms. Image segmentation consists of object recognition and delineation. For evaluating …

Scale-based fuzzy connected image segmentation: theory, algorithms, and validation

PK Saha, JK Udupa, D Odhner - Computer Vision and Image …, 2000 - Elsevier
This paper extends a previously reported theory and algorithms for object definition based
on fuzzy connectedness. In this approach, a strength of connectedness is determined …

Multiple sclerosis lesion quantification using fuzzy-connectedness principles

JK Udupa, L Wei, S Samarasekera… - … on medical imaging, 1997 - ieeexplore.ieee.org
Multiple sclerosis (MS) is a disease of the white matter. Magnetic resonance imaging (MRI)
is proven to be a sensitive method of monitoring the progression of this disease and of its …