Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies
if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the
same subfield and year (this is the minimum needed to enter the top 1%, not the average
within it), or reaches the top citation threshold in at least one of its specific research
topics.
Advances in Intelligent Systems and Computing
2022303 citationsRoumen Kountchev et al.Smart innovation, systems and technologiesprofile →
Peers — A (Enhanced Table)
Peers by citation overlap · career bar shows stage (early→late)
cites ·
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Countries citing papers authored by Roumen Kountchev
Since
Specialization
Citations
This map shows the geographic impact of Roumen Kountchev's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roumen Kountchev with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roumen Kountchev more than expected).
Fields of papers citing papers by Roumen Kountchev
This network shows the impact of papers produced by Roumen Kountchev. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roumen Kountchev. The network helps show where Roumen Kountchev may publish in the future.
Co-authorship network of co-authors of Roumen Kountchev
This figure shows the co-authorship network connecting the top 25 collaborators of Roumen Kountchev.
A scholar is included among the top collaborators of Roumen Kountchev based on the total number of
citations received by their joint publications. Widths of edges
represent the number of papers authors have co-authored together.
Node borders
signify the number of papers an author published with Roumen Kountchev. Roumen Kountchev is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Kountchev, Roumen, et al.. (2011). Hierarchical access control and content protection in medical image archives, based on inverse pyramid decomposition. 391–396.1 indexed citations
9.
Hikal, Noha A. & Roumen Kountchev. (2011). Skin color segmentation using adaptive PCA and modified elliptic boundary model. 407–412.1 indexed citations
10.
Kountchev, Roumen, et al.. (2010). Fragile and resistant image watermarking based on inverse difference pyramid decomposition. 6(3). 101–112.2 indexed citations
11.
Kountchev, Roumen, et al.. (2010). RSTC-invariant object representation with 2D modified Mellin-Fourier transform. 6(4). 196–207.1 indexed citations
12.
Kountchev, Roumen, et al.. (2010). Automatic detection of welding defects. International Journal of Reasoning-based Intelligent Systems. 3(1). 34–34.5 indexed citations
13.
Kountchev, Roumen, et al.. (2009). Non-linear image representation based on IDP with NN. 5(9). 315–325.6 indexed citations
14.
Kountchev, Roumen, et al.. (2008). Contours extraction in grayscale images of sign language interpreter. 22–27.1 indexed citations
15.
Kountchev, Roumen, et al.. (2007). Compression and contents protection of images, texts and graphics for distance learning applications. International Conference on Signal Processing. 83–90.
Kountchev, Roumen, et al.. (2006). Lossless compression of biometric image data. International Conference on Signal Processing. 185–190.6 indexed citations
Milanova, Mariofanna, et al.. (2003). Digital Watermarking for Medical Images.. 509–520.2 indexed citations
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive
bibliographic database. While OpenAlex provides broad and valuable coverage of the global
research landscape, it—like all bibliographic datasets—has inherent limitations. These include
incomplete records, variations in author disambiguation, differences in journal indexing, and
delays in data updates. As a result, some metrics and network relationships displayed in
Rankless may not fully capture the entirety of a scholar's output or impact.