Roumen Kountchev

According to our database, Roumen Kountchev authored at least 55 papers between 1992 and 2023.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2023

Analysis of the Recursive Locally-Adaptive Filtration of 3D Tensor Images.

Roumen Kountchev, Rumen P. Mironov, Roumiana Kountcheva

Symmetry, August, 2023

2022

MLTSP: New 3D Framework, Based on the Multilayer Tensor Spectrum Pyramid.

Roumiana A. Kountcheva, Rumen P. Mironov, Roumen K. Kountchev

Symmetry, 2022

Third-Order Tensor Decorrelation Based on 3D FO-HKLT with Adaptive Directional Vectorization.

Roumen K. Kountchev, Rumen P. Mironov, Roumiana A. Kountcheva

Symmetry, 2022

A Method for Local Contrast Enhancement of Endoscopic Images Based on Color Tensor Transformation into a Matrix of Color Vectors' Modules Using a Sliding Window.

Roumen Kountchev, Alexander Bekiarski, Rumen P. Mironov, Snezhana Pleshkova

Symmetry, 2022

Decorrelation of a Sequence of Color Images Through Hierarchical Adaptive Color KLT.

Roumen Kountchev, Roumiana Kountcheva

Proceedings of the Intelligent Decision Technologies, 2022

2020

Hierarchical third-order tensor decomposition through inverse difference pyramid based on the three-dimensional Walsh-Hadamard transform with applications in data mining.

Roumen K. Kountchev, Barna László Iantovics, Roumiana A. Kountcheva

WIREs Data Mining Knowl. Discov., 2020

Complexity Estimation of Cubical Tensor Represented through 3D Frequency-Ordered Hierarchical KLT.

Roumen Kountchev, Rumen P. Mironov, Roumiana Kountcheva

Symmetry, 2020

Hierarchical Cubical Tensor Decomposition through Low Complexity Orthogonal Transforms.

Roumen K. Kountchev, Rumen P. Mironov, Roumiana A. Kountcheva

Symmetry, 2020

2019

ExtrIntDetect - A New Universal Method for the Identification of Intelligent Cooperative Multiagent Systems with Extreme Intelligence.

László Barna Iantovics, Roumen Kountchev, Gloria Cerasela Crisan

Symmetry, 2019

2016

New Approaches for Hierarchical Image Decomposition, Based on IDP, SVD, PCA and KPCA.

Roumen Kountchev, Roumiana Kountcheva

Proceedings of the New Approaches in Intelligent Image Analysis, 2016

Tissue Segmentation Methods Using 2D Histogram Matching in a Sequence of MR Brain Images.

Vladimir Kanchev, Roumen Kountchev

Proceedings of the New Approaches in Intelligent Image Analysis, 2016

Face Recognition in Home Security System Using Tensor Decomposition Based on Radix-(2 × 2) Hierarchical SVD.

Roumen Kountchev, Suzan Anwar, Roumiana Kountcheva, Mariofanna G. Milanova

Proceedings of the Multimodal Pattern Recognition of Social Signals in Human-Computer-Interaction, 2016

2015

Hierarchical SVD-based image decomposition with tree structure.

Roumen K. Kountchev, Roumiana A. Kountcheva

Int. J. Reason. based Intell. Syst., 2015

Comparison of Image Decompositions Through Inverse Difference and Laplacian Pyramids.

Roumen Kountchev, Stuart H. Rubin, Mariofanna G. Milanova, Roumiana Kountcheva

Int. J. Multim. Data Eng. Manag., 2015

Content protection and hierarchical access control in image databases.

Roumen Kountchev, Mariofanna G. Milanova, Roumiana Kountcheva

Proceedings of the International Symposium on Innovations in Intelligent SysTems and Applications, 2015

2014

New Format for Coding of Single and Sequences of Medical Images.

Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the Advanced Intelligent Computational Technologies and Decision Support Systems, 2014

An Adaptive Approach for Noise Reduction in Sequences of CT Images.

Veska M. Georgieva, Roumen Kountchev, Ivo R. Draganov

Proceedings of the Advanced Intelligent Computational Technologies and Decision Support Systems, 2014

Compression of CT Images with Branched Inverse Pyramidal Decomposition.

Ivo R. Draganov, Roumen Kountchev, Veska M. Georgieva

Proceedings of the Advanced Intelligent Computational Technologies and Decision Support Systems, 2014

Adaptive multi-level 2D Karhunen-Loeve-based transform for still images.

Roumen Kountchev, Kazumi Nakamatsu

Int. J. Reason. based Intell. Syst., 2014

2013

Architecture for Medical Image Processing.

Rumen P. Mironov, Roumen Kountchev

Proceedings of the Advances in Intelligent Analysis of Medical Data and Decision Support Systems, 2013

Compression with Adaptive Speckle Suppression for Ultrasound Medical Images.

Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the Advances in Intelligent Analysis of Medical Data and Decision Support Systems, 2013

Decorrelation of Sequences of Medical CT Images Based on the Hierarchical Adaptive KLT.

Roumen Kountchev, Peter Ivanov

Proceedings of the Advances in Intelligent Analysis of Medical Data and Decision Support Systems, 2013

An Adaptive Enhancement of X-Ray Images.

Veska M. Georgieva, Roumen Kountchev, Ivo R. Draganov

Proceedings of the Advances in Intelligent Analysis of Medical Data and Decision Support Systems, 2013

Medical Images Transform by Multistage PCA-Based Algorithm.

Ivo R. Draganov, Roumen Kountchev, Veska M. Georgieva

Proceedings of the Advances in Intelligent Analysis of Medical Data and Decision Support Systems, 2013

Hierarchical principal component analysis-based transformation of multispectral images.

Petar N. Ivanov, Roumen Kountchev

Int. J. Reason. based Intell. Syst., 2013

Comparison of the structure and the computational complexity of the inverse difference and Laplacian Pyramids for still image decomposition.

Roumen Kountchev, Mariofanna G. Milanova, Stuart Harvey Rubin, Roumiana Kountcheva

Proceedings of the IEEE 14th International Conference on Information Reuse & Integration, 2013

2012

Complex Hadamard transform of digital signals: properties and applications.

Rumen P. Mironov, Roumen Kountchev

Int. J. Reason. based Intell. Syst., 2012

Multispectral Image Compression, Intelligent Analysis, and Hierarchical Search in Image Databases.

Stuart Harvey Rubin, Roumen Kountchev, Mariofanna G. Milanova, Roumiana Kountcheva

Int. J. Multim. Data Eng. Manag., 2012

One Approach for Grayscale Image Decorrelation with Adaptive Multi-level 2D KLT.

Roumen Kountchev, Kazumi Nakamatsu

Proceedings of the Advances in Knowledge-Based and Intelligent Information and Engineering Systems, 2012

Intelligent processing and analysis of groups of multispectral images.

Stuart Harvey Rubin, Roumen Kountchev, Mariofanna G. Milanova, Roumiana Kountcheva

Proceedings of the IEEE 13th International Conference on Information Reuse & Integration, 2012

2011

Compression of multispectral and multi-view images with inverse pyramid decomposition.

Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Int. J. Reason. based Intell. Syst., 2011

Automatic detection of welding defects.

Roumen Kountchev, Stuart H. Rubin, Vladimir Todorov, Roumiana Kountcheva

Int. J. Reason. based Intell. Syst., 2011

Invariant object description with inverse pyramid based on the truncated modified discrete Mellin-Fourier transform.

Roumen Kountchev, Stuart Harvey Rubin, Mariofanna G. Milanova, Roumiana Kountcheva

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2011

Object and Scene Recognition Using Color Descriptors and Adaptive Color KLT.

Volkan H. Bagci, Mariofanna G. Milanova, Roumen Kountchev, Roumiana Kountcheva, Vladimir Todorov

Proceedings of the Human Interface and the Management of Information. Interacting with Information, 2011

2010

Introduction to Intelligent Elevator Control Based on EVALPSN.

Kazumi Nakamatsu, Jair Minoro Abe, Seiki Akama, Roumen Kountchev

Proceedings of the Knowledge-Based and Intelligent Information and Engineering Systems, 2010

Compression of Multispectral Images with Inverse Pyramid Decomposition.

Roumen Kountchev, Kazumi Nakamatsu

Proceedings of the Knowledge-Based and Intelligent Information and Engineering Systems, 2010

Resistant image watermarking in the phases of the Complex Hadamard Transform coefficients.

Roumen Kountchev, Stuart Harvey Rubin, Mariofanna G. Milanova, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2010

2009

Efficient archiving of documents with protection of their authentic content.

Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Int. J. Reason. based Intell. Syst., 2009

Intra-frame Compression of Video Sequences with Inverse Difference Pyramid Decomposition.

Roumen Kountchev, Stuart Harvey Rubin, Mariofanna G. Milanova, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2009

Content Based Image Retrieval Using Adaptive Inverse Pyramid Representation.

Mariofanna G. Milanova, Roumen Kountchev, Stuart Harvey Rubin, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the Human Interface and the Management of Information. Information and Interaction, 2009

2008

Image Representation with Reduced Spectrum Pyramid.

Roumen Kountchev, Roumiana Kountcheva

Proceedings of the New Directions in Intelligent Interactive Multimedia, 2008

Extraction of objects contours for body language study.

Roumen Kountchev, Stuart Harvey Rubin, Mariofanna G. Milanova, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2008

Combined visual attention model for video sequences.

Mariofanna G. Milanova, Stuart Harvey Rubin, Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the 19th International Conference on Pattern Recognition (ICPR 2008), 2008

Image Decomposition on the basis of an Inverse Pyramid with 3-layer Neural Networks.

Valeriy Cherkashyn, Roumen Kountchev, Dong-Chen He

Proceedings of the Innovations and Advances in Computer Sciences and Engineering, 2008

2007

Image Multi-Layer Search Based on Spectrum Pyramid.

Roumen Kountchev, Stuart Harvey Rubin, Mariofanna G. Milanova, Vladimir Todorov

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2007

Enhancement of the Visual Quality of Scanned Documents.

Roumen Kountchev, Mariofanna G. Milanova, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the IEEE International Conference on Information Reuse and Integration, 2007

2006

Contrast enhancement with histogram-adaptive image segmentation.

Stuart Harvey Rubin, Roumen Kountchev, Vladimir Todorov, Roumiana Kountcheva

Proceedings of the 2006 IEEE International Conference on Information Reuse and Integration, 2006

2005

Multi-layer Image Transmission with Inverse Pyramidal Decomposition.

Roumen Kountchev, Mariofanna G. Milanova, Charles Ford, Roumiana Kountcheva

Proceedings of the Computational Intelligence for Modelling and Prediction, 2005

2004

Audio Watermarking Based On Inverse Difference Decomposition.

Roumen Kountchev, Mariofanna G. Milanova, Charles Ford, Stuart Harvey Rubin, Roumiana Kountcheva

Proceedings of the 2004 IEEE International Conference on Information Reuse and Integration, 2004

Lossless Image Compression with IDP and Adaptive RLC.

Roumen Kountchev, Mariofanna G. Milanova, Charles Ford, Stuart Harvey Rubin, Roumiana Kountcheva

Proceedings of the International Conference on Imaging Science, Systems and Technology, 2004

2003

Digital Watermarking for Medical Images.

Mariofanna G. Milanova, Charles Ford, Roumen Kountchev, Roumiana Kountcheva

Proceedings of the International Conference on Mathematics and Engineering Techniques in Medicine and Biological Scienes, 2003

Multimedia Watermarking with Complex Hadamard Transform in the Inverse Pyramid Decomposition.

Roumen Kountchev, Mariofanna G. Milanova, Charles Ford, Stuart Harvey Rubin

Proceedings of the 2003 IEEE International Conference on Information Reuse and Integration, 2003

2002

Inverse pyramidal decomposition with multiple DCT.

Roumen Kountchev, Véronique Haese-Coat, Joseph Ronsin

Signal Process. Image Commun., 2002

Fast Image Transfer with Adaptive Multi-Layer Image Compression.

Mariofanna G. Milanova, Charles Ford, Roumen Kountchev, Roumiana Kountcheva

Proceedings of the FSDK'02, 2002

1992

Recovering and CAD/CAM Processing of Complex Surfaces.

Mariofanna G. Milanova, I. A. Aleksandrov, Roumen Kountchev

Proceedings of the 10th European Conference on Artificial Intelligence, 1992