Gozde B. Unal

Works (5)

Updated: July 5th, 2023 16:00

2005 journal article

Information-theoretic active polygons for unsupervised texture segmentation

INTERNATIONAL JOURNAL OF COMPUTER VISION, 62(3), 199–220.

By: G. Unal*, A. Yezzi * & H. Krim n 

author keywords: region-based active contours; unsupervised segmentation; texture segmentation; polygon evolution; information theoretic measure; electrostatic regularizer
topics (OpenAlex): Medical Image Segmentation Techniques; Image Retrieval and Classification Techniques; Image and Object Detection Techniques
TL;DR: A new active contour model is developed which nicely ties the desirable polygonal representation of an object directly to the image segmentation process and can robustly capture texture boundaries by way of higher-order statistics of the data and using an information-theoretic measure and with its nature of the ordinary differential equations. (via Semantic Scholar)
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Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 journal article

Stochastic differential equations and geometric flows

IEEE TRANSACTIONS ON IMAGE PROCESSING, 11(12), 1405–1416.

By: G. Unal n, H. Krim n  & A. Yezzi *

author keywords: geometric image and shape flows; stochastic differential equations; nonlinear filtering; shape analysis
topics (OpenAlex): Mathematical Biology Tumor Growth; Advanced Numerical Analysis Techniques; Morphological variations and asymmetry
TL;DR: Modifications of the geometric heat equation designed to preserve certain features in these shapes while removing noise are presented, and it is shown how these new flows may be applied to smooth noisy curves without destroying their larger scale features, in contrast to the original geometric heat flow. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2002 journal article

Unifying probabilistic and variational estimation

IEEE SIGNAL PROCESSING MAGAZINE, 19(5), 37–47.

By: A. Hamza*, H. Krim*  & G. Unal*

topics (OpenAlex): Image and Signal Denoising Methods; Medical Image Segmentation Techniques; Sparse and Compressive Sensing Techniques
TL;DR: This article presents a variational approach to MAP estimation with a more qualitative and tutorial emphasis and proposes an information-theoretic gradient descent flow which is a result of minimizing a functional that is a hybrid between a negentropy variational integral and a total variation. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2001 journal article

Restoration of error-diffused images using projection onto convex sets

IEEE TRANSACTIONS ON IMAGE PROCESSING, 10(12), 1836–1841.

By: G. Unal n & A. Cetin *

author keywords: error diffusion; inverse error diffusion; inverse halftoning; projection onto convex sets (POCS); restoration
topics (OpenAlex): Color Science and Applications; Image Enhancement Techniques; Image and Signal Denoising Methods
TL;DR: A novel inverse halftoning method is proposed to restore a continuous tone image from a given half-tone image using a set theoretic formulation where three sets are defined using the prior information about the problem. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (Web of Science; OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

QR-RLS algorithm for error diffusion of color images

Optical Engineering (Redondo Beach, Calif.), 39(11), 2860–2866.

By: G. Unal, Y. Yardimci, O. Arikan & A. Cetin

Source: NC State University Libraries
Added: August 6, 2018

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