Computer Science

Academic Staff

April 20, 2026, 9:28 a.m.
Hasan Salim Mohammed
Hasan Salim Mohammed (PhD)
Assistant Professor
Assistant Professor in Document Image Analysis and Recognition

Computer Science
College of Science
University of Duhok
[email protected]
ORCID
Google Scholar

Ph.D. (2010) in Computer Science, Universiti Sains Malaysia, Malaysia

M.Sc. (2000) in Computer Science, University of Mosul, Iraq

B.Sc. (1997) in Computer Science, University of Mosul, Iraq

PhD level

  1. Document Image Analysis and Recognition

MSc level

  1. Document Image Analysis and Recognition
  2. Image Analysis and Security (Shared course)
  3. Compilers Design
  4. Research Methodology (Shared course)

Undergraduate level

  1. Digital Image Processing
  2. Computer Graphics (C++)
  3. Computer Graphics with OpenGL
  4. Compilers Design
  5. Multimedia
  6. Data Structures (C)
  7. Visual C++ Programming
  8. Object Oriented Programming (C++)
  9. Microprocessors and Assembly Language (8086 Microprocessor)
  10. Principles of Computing (Pascal)
  11. Systems Analysis
  12. Computer Skills 2 (C++)
  13. File Organization and Processing (C)

Head of Examination Committee, Dept. of Computer Science, UoD, 2018

Head, Final Year Project, Dept. of Computer Science, UoD, 2014

Co-organizer of Arc Segmentation Contest, GREC 2011, Seoul, S.Korea, 2011

Arc Segmentation Contest, GREC 2009, La Rochelle, France, 2009

Post‑Doctoral Fellow, Technische Universität Kaiserslautern

Kaiserslautern, Germany, 2011

Post‑Doctoral Fellow, Universiti Sains Malaysia, Penang, Malaysia, 2010

Award for publishing in journal with impact factor, Post Graduate Colloquium, Universiti Sains Malaysia, Malaysia, 2009

Research

  1. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Rosalina Abdul Salam, A Study on the effects of noise level, cleaning method, and vectorization software on the quality of vector data. Lecture Notes in Computer Science, Graphics Recognition. Recent Advances and New Opportunities, LNCS 5046, W. Liu, J. Lladós, and J.-M. Ogier, Eds.: Springer Berlin / Heidelberg, pp. 299-309, 2008
  2. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Rosalina Abdul Salam, Removing Salt-and-Pepper Noise from Binary Images of Engineering Drawings. The 19th IAPR International Conference on Pattern Recognition (ICPR 2008), Vols 1-6, pp. 1271–1274, Tampa, Florida, USA, December 8-11, 2008 [poster]
  3. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Mohd Azam Osman, Wong Poh Lee, GREC'09 Arc Segmentation Contest: Performance Evaluation on Old Documents. Lecture Notes in Computer Science, Graphics Recognition. Achievements, Challenges, and Evolution, J.-M. Ogier, W. Liu, and J. Llad́os (Eds.) GREC 2009, LNCS 6020, pp. 251–259, 2010
  4. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Rosalina Abdul Salam, Salt and Pepper Noise Removal from Document Images. Lecture Notes in Computer Science, Visual Informatics: Bridging Research and Practice, LNCS 5857, H. Badioze Zaman et al. (Eds.): Springer Berlin / Heidelberg, IVIC 2009, pp. 607–618, 2009
  5. Hasan S. M. Al-Khaffaf, Fazilah Haron, Siamak Sarmady, Abdullah Zawawi Talib, Ibtesam M. Abu-Sulyman, Crowd Parameter Extraction from Video at the Main Gates of Masjid al-Haram, Advances in Intelligent and Soft Computing, Volume 133, pp. 727-736, 2012
  6. Bilal Abdulrahman T. Al-Douri, Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Empirical Performance Evaluation of Raster to Vector Conversion with Different Scanning Resolutions. Lecture Notes in Computer Science, Visual Informatics: Sustaining Research and Innovations, LNCS 7066, Halimah Badioze Zaman et al. (Eds.): Springer Berlin / Heidelberg, pp. 176-182, 2011
  7. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, and Mohd Azam Osman, Final Report of GREC’11 Arc Segmentation Contest: Performance Evaluation on Multi-resolution Scanned Documents, Lecture Notes in Computer Science, New Trends and Challenges, Young-Bin Kwon, Jean-Marc Ogier (Eds.), GREC'11, Volume 7423, pp 187-197, 2013
  8. Hasan S. M. Al-Khaffaf, Faisal Shafait, Michael P. Cutter, Thomas M. Breuel, On the Performance of Decapod’s Digital Font Reconstruction. The 21th IAPR International Conference on Pattern Recognition (ICPR 2012), pp. 649 – 652, Tsukuba Science City, Japan, November 11-15, 2012 [poster]
  9. Syed Saqib Bukhari, Hasan S. M. Al-Khaffaf, Faisal Shafait, Mohd Azam Osman, Abdullah Zawawi Talib, Thomas M. Breuel, Final Report of GREC’13 Arc and Line Segmentation Contest. In: Lamiroy B., Ogier JM. (eds) Graphics Recognition. Current Trends and Challenges. GREC 2013. Lecture Notes in Computer Science, vol 8746. Springer, Berlin, Heidelberg, 2014
  10. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Wan Mohd Nazmee Wan Zainon, Mohd Azam Osman, A framework for objective performance evaluation for digital font reconstruction, SAI Computing Conference (SAI), London, 2016, DOI: 10.1109/SAI.2016.7556008
  11. Hasan S. M. Al-Khaffaf, Abdullah Z. Talib,``Three-stage Junction Detection in Document Images," 2020 International Conference on Computer Science and Software Engineering (CSASE), Duhok, Iraq, 2020, pp. 142-145, doi: 10.1109/CSASE48920.2020.9142083.
  12. Aveen Jalal Mohammed, Hasan S. M. Al-Khaffaf,``Font Recognition of English Letters Using Normalized Central Moments Features," 2020 International Conference on Computer Science and Software Engineering (CSASE), Duhok, Iraq, 2020, pp. 249-254, doi: 10.1109/CSASE48920.2020.9142078.
  13. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Rosalina Abdul Salam, Enhancing salt-and-pepper noise removal in binary images of engineering drawing. IEICE TRANS. INF. & SYST., Vol.E92-D, No.4, pp.689-704, Apr. 2009.
  14. Hasan S. M. Al-Khaffaf, Abdullah Zawawi Talib, Rosalina Abdul Salam, Empirical Performance Evaluation of Raster-to-Vector Conversion Methods: A Study on Multi-level Interactions between Different Factors. IEICE TRANS. INF. & SYST., Vol.E94-D, No.6, pp. 1278-1288, Jun. 2011.
  15. Hasan S. M. Al-Khaffaf, Nadia A. Musa. Optical English Font Recognition in Document Images Using Eigenfaces. Innovaciencia Facultad De Ciencias Exactas, Físicas Y Naturales, 6(1), 1-11, 2018. https://doi.org/10.15649/2346075X.466
  16. Aveen Jalal Mohammed, Hasan S. M. Al-Khaffaf, Font Recognition of English Letters Based on Distance Profile Features. Science Journal of University of Zakho, 8(2), 66-71, 2020. https://doi.org/10.25271/sjuoz.2020.8.2.694
  17. Hasan S. M. Al-Khaffaf. A Modified Vector Recovery Index. Science Journal of University of Zakho, 8(3), 118-122, 2020. https://doi.org/10.25271/sjuoz.2020.8.3.755
  18. Hasan S. M. Al-Khaffaf, Abdullah Z. Talib, 'A Thinning-Based Junction Detection and Resolution Algorithm for Document Images', Journal of Duhok University, 23(2), 731-744, 2020, https://journal.uod.ac/index.php/uodjournal/article/download/974/702
  19. Dilovan S. Ramadhan, Hasan S.M. Al-Khaffaf. Symbol Spotting in Electronic Images Using Morphological Filters and Hough Transform. Science Journal of University of Zakho, 10(3), 119–129. 2022. https://doi.org/10.25271/sjuoz.2022.10.3.874
  20. Iman M. Yaseen, Hasan S.M. Al-Khaffaf, Writer Independent Offline Signature Verification System using Global and Local Geometric Features, Iraqi Journal for Computers and Informatics (IJCI), Vol. 50 No. 1, 172-186, 2024. https://doi.org/10.25195/ijci.v50i1.466
  21. Reta L. Alsaoor, Hasan S.M. Al-Khaffaf, Chart Classification of DocFigure Dataset using VGG-16 and EfficientNet-B3, Zanin Journal of Science and Engineering, Volume 1, Issue 4, December 2025

Document Image Analysis and Recognition

Graphics Recognition

Optical Font Recognition

MSc. Degree

  1. Nadia A. Musa, 2016
  2. Aveen J. Mohammed, 2020
  3. Dilovan S. Ramadhan, “Symbol Spotting In Document Images Using Morphological Filters And Hough Transform”, 2022
  4. Iman M. Yaseen, “Writer Independent Offline Signature Verification Using Geometric Features”, 2024
  5. Reta L. Alsaoor, “Chart Classification using Supervised Learning Methods”, 2025