- Multimedia Forensics an invited expert lecture in a course for Cyber Forensic Crack Team of CBI at CBI Academy, Ghaziabad (U.P.), July, 2014.
- An Introduction to Multimedia Forensics an invited guest lecture at MAII-Startford University USA, Delhi Campus, New Delhi,April, 2014.
- Multimedia Forensics:Issues and Challenges an invited expert lecture in a course for Cyber Forensic Crack Team of CBI and TAFSUs at CBI Academy, Ghaziabad (U.P.), February, 2014.
- An Introduction to Automatic Signature Verification Systems an invited guest lecture to the students of M.Sc. (Forensic Science) LNJN National Institute of Criminology and Forensic Science, Ministry of Home Affairs, Govt. of India, New Delhi, October 2013.
- A Pattern Recognition Framework for Detection of Alteration in Documents an invited expert lecture for the M Tech/M.E. students of Institute of Technology, Nirma University, Ahmadabad, Gujrat, February, 2012.
- Content Based Image Retrieval : An Introduction in 10th North-East Workshop on Computational Information Processing jointly organized by Govt. Zirtiri Residential College, Aizwal, Mizoram and Indian Statistical Institute Kolkata, November 2010.
- Off-line Signature Verification: A MATLAB Approach in Workshop on MATLAB Toolboxes jointly organized by St. Xavier's College, Kolkata and Computer Society of India, Kolkata Chapter, October 2010.
- Color Image Processing in Workshop on Digital Image Processing and Synthesis organized by Indian Statistical Institute, Kolkata and funded by Department of Science and Technology, Govt. of India, New Delhi, January 2010.
- Off-line Signature Verification in 9th North-East Workshop on Computational Information Processing organized by Indian Statistical Kolkata, India, March 2010.
- An Interactive system for the authentication of security Documents in 22nd All India Forensic Science Conference, Srinagar, Jammu and Kashmir, India, June 2012.
- Automatic Authentication of Security Documents: An Image Processing Framework in National Conference on Latest Technologies and their Application in Forensic Science and Digital Forensics, March 2012.
- Criminalistics:A Journey from Fiction to Science in Mini Conference on Research Methodology, ASU, Indian Statistical Institute, Kolkata, April 2011.
- Automatic Signature Verification : A Step Towards Making Forensic Document Examination Automated in XXI All India Forensic Science Conference, Aurangabad, Maharashtra, Dec. 2010.
- A Writer-Independent Off-line Signature Verification based on Signature Morphology in IITM, IIIT Allahabad, Dec. 2010.
- A Novel Approach for Detection of Alteration in Ball Pen Writings in 3rd International Conference on Pattern Recognition and Machine Intelligence, Indian Institute of Technology Delhi, Dec. 2009.
- Detection of Fraudulent Alterations in Ball-Point Pen Strokes using Support Vector Machines in IEEE INDICON, DA-IICT, Gandhinagar, Dec. 2009.
- Mathematical Morphology Based Image Processing and its Application in Forensic Soil Examination in IX All India Forensic Science Conference, Gandhinagar, Gujrat, Jan. 2009.
- File Carving Review: New Directions for Efficient and Innovative File Carving in XVIII All India Forensic Science Conference, Kolkata, Nov. 2007.