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Mehul S. Raval

Associate Professor
Ph.D. (Electronics and Telecommunication Engineering), Pune University, India
Areas of interest
Image processing, Reversible watermarking, Soft biometrics, Machine Learning, Computer Vision

Dr. Mehul S Raval is working as an Associate Professor at School of Engineering and Applied Science (SEAS ), Ahmedabad University, Ahmedabad, India. Earlier (2008-2013) he was associated with Dhirubhai Ambani Institute of Information and Communication Technology (DA-IICT), Gandhinagar, Gujarat as an Assistant Professor. Before joining DA-IICT, he worked (1997 - 2008) at Electronics and Communication Engineering Department, Sarvajanik College of Engineering and Technology(SCET), Surat as a Lecturer, as an Assistant Professor and Department Incharge. He was a visiting faculty to Master's program in Electronics department at Sardar Vallabhbhai National Institute of Technology SVNIT (2005 / 2007) Surat and Veer Narmad South Gujarat University (2004 - 2008). 

He is an alumnus of Electronics & Telecommunication Engineering department, College of Engineering Pune (COEP), one of the oldest engineering institute in Asia (established in 1854). His current research interest are Image and Signal Processing, Reversible watermarking techniques, Soft biometrics, Soft computing, Machine learning, Remote sensing, Inverse ill posed problems in image processing.

Dr. Raval visited Graduate School of Natural Science and Technology, Okayama University, Japan during July- August 2016 under Sakura science exchange program sponsored by Japan Science and Technology (JST), Govt. of Japan. He coauthored a book on  Image and Video Compression: Fundamentals, Techniques and Applications, CRC press, Nov. 2014. Dr. Raval has number of book chapters to his credit and he has published extensively in journals, magazines, conferences, workshops at national and international level. He is an actively supporting research community by serving as member of technical program committees for leading national and international conferences, workshops. He also reviews articles for leading journals of IEEE, ACM, Springer, Elsevier, SEAS . He has received research funds from Board of Research in Nuclear Science (BRNS), Department of Atomic Energy, Government of India and IEEE. 

He is currently supervising two doctoral candidates and many students have completed M.Tech theses  and B.Tech projects under his supervision.   He is member of Board of Studies for various universities. He is a senior member of IEEE  and he has served  IEEE Gujarat section execom in various capacities (2008 - 2015). He also served IEEE Gujarat section signal processing society chapter as vice chair and execom member in 2014.

Google Scholar Profile

Research Gate resources


Research Projects

Description based person identification in unconstrained surveillance video (2016 - 2019)

Sponsoring agency: Board of Research in Nuclear Science (BRNS), Bhabha Atomic Research Centre, Department of Atomic Energy, Government of India.
Grant Amount: Rs. 20.92 lacs
Research Team:
Principal Investigator (PI): Mehul S Raval, Associate Professor, School of Engineering and Applied Science, Ahmedabad University
CI: Sanjay Chaudhary, Professor and Associate Dean, School of Engineering and Applied Science, Ahmedabad University
Project Collaborator (PC): Anand Laddha, Scientific Officer - G, Physical Protection System Section, Control Instrumentation Division, BARC, Trombay.

Project Detail:

The goal of the project is to locate a person-of-interest based on specific set of soft biometric attributes from a surveillance video without prior registration. The project will integrate and minimize semantic gap between human descriptions and soft biometric traits. Moreover it aims at extracting soft biometric features from an input image or a video frame and then uses these features to locate a matching individual in the video stream. This project will add another dimension to surveillance as human cognitive perceptions are used while searching the video streams.

Securing biometric data using data hiding techniques (2010 - 2013)

Sponsoring agency: Board of Research in Nuclear Science (BRNS), Bhabha Atomic Research Centre, Department of Atomic Energy, Government of India.
Grant Amount: Rs. 14,00,000 
Research Team:
Principal Investigator (PI): Mehul S Raval
CI: Priti P. Rege, Professor and Dean Academics,  COEP, Pune
Project Collaborator (PC): S K Parulekar, Scientist H+, Head Computer security division, BARC, Mumbai.
SRF: Vaibhav Joshi,  DA-IICT
Project Detail:
Biometrics based authentication systems have been gaining widespread acceptance in the information security domain. However there are several loopholes in biometric systems. This project aims at improving the security and authentication mechanisms of biometric systems by using complementary data hiding techniques. Fragile watermarking will be used to check the integrity and authenticity of biometric templates before identification. This will improve the overall security. 

Techniques for Robust Face Recognition with Pose Variations (2012 - 2015)
Sponsoring agency: Board of Research in Nuclear Science (BRNS), Bhabha Atomic Research Centre, Department of Atomic Energy, Government of India.
Grant Amount: Rs. 19,00,000
Research Team:
Principal Investigator: Suman Mitra, Professor, DA-IICT.
Co-Investigator: Prof. Mehul S Raval
Project Collaborator (PC): S K Parulekar, Scientist H+, Head Computer security division, BARC, Mumbai.
Project Details:
Face recognition is the most common and natural means for person identification. This has been a prime focus of research since the introduction of digital technology. Within the scope of machine vision, face recognition sets a great challenge due to the dynamic conditions under which face images are captured. One of the most challenging tasks is to recognize the face under varying poses. Research is continuing to propose more robust face recognition systems, especially under pose variations. An additional challenge is face recognition from partial information or when the face has undergone some changes. The present project aims to improve the face recognition system so as to handle pose variations and face recognition from partial information. Most of the current systems of face recognition try to get face features which are global in nature and then use these in recognition. Here, a system would be built that captures global as well as local features to make more accurate decisions. The present system would also take up a modular approach that would enable recognition from important areas such as the eye region, the lip region and so on. This could be an answer to recognize faces even under disguise.


Book Chapter

Mehul S Raval, "Reversible data hiding: An Active Forensic framework for digital images," Eds: Peter Stephenson, Information Security Management Handbook, Seventh Edition, CRC Press (Accepted)










Madhuri A. Joshi, Mehul S. Raval, Yogesh H. Dandawate, Kalyani R. Joshi, Shilpa P. Metkar, Image and Video Compression: Fundamentals, Techniques and Applications , Chapman and Hall / CRC, FL, US, 17th Nov. 2014, DOI: 10.1201/b17738-1, Print ISBN 978-1-4822-2822-9 eBook ISBN: 978-1-4822-2823-6

Book Review for Image and Video Compression



Student Paper:



  • Joshi, M. V., Joshi, Vaibhav and Raval, Mehul S. "Multilevel semi-fragile watermarking technique for improving biometric fingerprint system security," in Intelligent Interactive Technologies and Multimedia, Anupam Agrawal, R. C. Tripathi, Ellen Yi-Luen Do and M. D. Tiwari Eds. Heidelberg: Springer, 2013, pp. 272-283.
  • Nutt, Victor, Kher, Shubhalaxmi and Raval, Mehul S.. "Fuzzy headlight intensity controller using wireless sensor network," in IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2013), Hyderabad, India, pp:1 - 6, July 7-10, 2013. 
  • Padalkar, Milind, Vora, Manali, Joshi, M.V., Zaveri, Mukesh & Raval, Mehul S., "Identifying Vandalized Regions in Facial Images of Statues for Inpainting", in A. Petrosino, L. Maddalena, P. Pala (Eds.): ICIAP 2013 Workshops, Springer-Verlag Berlin Heidelberg LNCS 8158, pp. 208–217, Naples, Italy, September 9th 2013. 
  • Raval, Mehul S., Joshi, M. V., Kher Shubhalaxmi, "Fuzzy Neural Based Copyright Protection Scheme for Superresolution", in IEEE International Conference on Systems, Man and Cybernetics(SMC 2013), pp: 328 - 332, Manchester, UK, October 13-16, 2013. 
  • Vaibhav Joshi,  Raval Mehul S., Suman Mitra, S. K. Parulkar, Priti P. Rege, "Reversible Watermarking Techniques to Enhance Security of Biometric Authentication System," IEEE NCVPRIPG 2013, IIT Jodhpur, 19 -21 Dec. 2013.

Winter 2017

Digital Signal Processing, B.Tech (ICT), Sem VI

Machine Learning, M.Tech (Data Science and Analytics) Open elective to B.Tech ICT, Sem VI and VIII

Fall 2016

Quantitative Engineering Analysis, Sem. III, Bachelor of Science Program, Olin College of Engineering, Needham, Massachusetts, US, (Co-teaching)

Summer 2016

Machine Learning, PhD Program, SEAS

Winter 2016

Machine Learning, M.Tech (Data Science and Analytics) Open elective to B.Tech ICT, Sem VI and VIII

Monsoon 2015-16

Probability and Statistical Inference, M.Tech (Data Science and Analytics) and PhD Program

Signals and Systems, B.Tech, ICT, Semester III

Winter 2015

Machine Learning, M.Tech (Data Science and Analytics)

Monsoon 2014 - 15

Probability and Statistical Inference, M.Tech (Data Science and Analytics) and PhD Program

Signals and Systems, B.Tech, ICT, Semester III

Winter 2013 - 14

Course on Probability and Random Processes, B.Tech ICT,  Semester IV

 Monsoon 2013-14

Course on Computer Organization, B.Tech ICT, Semester III

Winter 2012-13

IT 518, Fuzzy Neural systems, M.Tech Machine Intelligence, Semester II.

Autumn 2012-13

IT 209, Computer Organization, B.Tech ICT, Semester II




IEEE Transaction on EducationSPIE Journal of Applied Remote SensingRoyal Society Open Science, Wireless communication and mobile computing, Elsevier Digital Communications and Networks




IEEE Transactions on Instrumentation & MeasurementIEEE Transactions on MultimediaNational Academy of Sciences, India Section A: Physical Sciences, SPIE Journal of Applied Remote SensingSpringer Plus, Journal of the Institution of Engineers (India): Series BSADHANA - Academy Proceedings in Engineering Sciences 

Member Technical Program committee / Reviewer 


  • National Conference on Commmunication, NCC 2016, Guwahati, India, 4 - 6 Mar. 2016
  • International Conference on Signal and Information Processing, IConSIP-2016, Shri Guru Gobind Singhji Institute, Nanded, Maharastra, India, 6 - 8 Oct. 2016
  • Conference on Advances in Signal Processing 2016 , Pune, Maharastra, India, 9  - 11, June 2016.
  • IEEE International Conference on Computing, Analytics and Security Trends, Pune, Maharastra, India, 19  - 21, Dec. 2016.




Springer Proceedings of National Academy of Sciences, India, Section A: Physical Sciences, Springer Journal of The Institution of Engineers (India): Series B, Journal of Applied Remote Sensing, International Society for optics and photonics (SPIE), 


 Member Technical Program committee / Reviewer 


Honorary Position 

  • Vice Chair, IEEE Gujarat Section (2014):
  • Vice Chair, IEEE Gujarat section Signal Processing Society Chapter (2014) 
  • Program Co - Chair, IEEE National seminar on Computer Vision, Image Processing and Graphics (NaSCOVIP) 2014, 19th and 20th Sept. 2014, Surat, Gujarat,
  • Organizing Chair, IEEE Emerging Research Trends in Engineering (ERTE 2014), 19th - 20th July 2014, Ahmedabad,Gujarat, 



Journal of The Institution of Engineers (India): Series B: Springer, Image and Vision Computing: Elsevier, IEEE Transactions on Multimedia, Taylor and Francis - International Journal of Computer Mathematics, SEAS - Image Processing, The National Academy of Sciences, Physical Sciences (NASA): Springer, Biomedical Engineering: Applications, Basis and Communications: World Scientific

Conferences Technical Program Committee member

  • Advancement in Information Technology International Conference, Bandung, Indonesia,  29th – 31st December 2014.
  • IEEE International conference on advanced networks and Telecommunication systems (ANTS 2014), 14th - 17th December 2014, New Delhi.
  • IEEE Symposium on Industrial Electronics & Applications (ISIEA2014), Kota Kinabalu, Sabah, Malaysia, September 28 to October 1, 2014.
  • IEEE Symposium on Wireless Technology & Applications, Kota Kinabalu, Malaysia, September 28 to October 1, 2014.
  • 3rd International Conference on Advances in Computing, Communications and Informatics, Noida, 24th - 27th September 2014.
  • International Workshop on Mobile Applications, Barcelona, Spain, 27-29 August 2014.
  • 2014 International Workshop on the Design and Performance of Networks on Chip (DPNoC 2014), Niagara Falls, Ontario, Canada, August 17-20, 2014.
  • 7th International Conference on Contemporary computing IC3 2014, Noida, August 7th - 9th 2014
  • Nature and Biologically Inspired Computing (NaBIC’14), Porto, Portugal, July 30, 31 - August 01, 2014.
  • Computational aspect of Social network, Porto, Portugal, July 30, 31 - August 01, 2014.
  • 10th IEEE Colloquium on Signal Processing and its Applications (CSPA2014) IEEE Malaysia Chapter Control Systems Society, Kuala Lumpur, Malaysia on the 7th to 9th of March 2014.
  • National Conference on Communication (NCC 2014), 28th Feb - 2nd March 2014, IIT Kanpur.



The Computer Journal, Oxford Journals, IEEE Transactions on Geoscience and Remote Sensing (TGRS), EURASIP Journal on Advances in Signal Processing, Taylor and Francis - International Journal of Computer Mathematics, IEEE Transactions on Multimedia

Reviewer and Technical Program Commitee Member: 2013

  • IEEE Symposium on Computers & Informatics, Langkawi, Malaysia, from 7 - 9 April 2013.
  • IEEE Business Engineering and Industrial Applications Colloquium 2013, Langkawi, Malaysia,  7 – 9 April 2013.
  • 2nd IEEE International Conference on Advances in Computing, Communications and Informatics, Mysore, India, 22nd - 25th August 2013.
  • IEEE Symposium on Wireless Technology & Applications, Malaysia, 22nd - 25th September, 2013. 
  • IEEE Conference on Wireless Sensors, Kuching, Malaysia, 2nd – 4th, December 2013.
  • IEEE International RF and Microwave Conference (RFM 2013), Penang, Malaysia, 09 – 11, December, 2013.
  • Fourth National Conference on Computer Vision, Pattern Recognition, Image Processing and Graphics (NCVPRIPG), Jodhpur, India, 19 - 21st Dec. 2013.

Graduated PhD scholar

Niteen B Patel, Veer Narmad South Gujarat University, Surat, Gujarat, India, 2016.

Thesis on "Target Localization, Improving Tracking Accuracy and Energy Efficiency In Wireless Sensor Network"

PhD Committee Members

Current PhD scholars

  • Vaibhav B Joshi, "Securing Biometrics through Data hiding techniques", Ahmedabad University, Gujarat, India.
  • Rupal Agravat, "Robust Brain Tumor segmentation, Ahmedabad University, Gujarat, India.

Current MTech Student 2016 - 2017

  • Maruti Goswami, "Soft biometrics based person identification", SEAS

Past MTech Students

  • Pooja Patel, "Pattern classification of Protein sequences", SEAS, AU Jointly with Dr. Manish Datt, ILS
  • Dhara Sangani, "Pansharpening in Remotely sensed images", L.D. College of Engineering. Ahmedabad.
  • Dhruv Gupta, "Study of Fuzzy Clustering Algorithms and Enhanced Fuzzy Reasoning Applications to Texture Based Image Segmentation", DA-IICT, 2013-14.
  • Ronak Kosti,"Estimating Depth in a Single Image by Learning through Neural Network", DAIICT. 
  • Harikumar V, “Compressive sensing based multi resolution image fusion”, DA-IICT 2011-12.
  • Mr. Sandeep Juneja, “Collusion Resistive Watermarking techniques”, DA-IICT, 2010- 11
  • Mr. Akshay Gupta, “SVD based Robust Watermarking techniques” DA-IICT, 2008
  • Ms Arpita Parmar, “Reversible Watermarking techniques”, CIT Changa, Gujarat University, 2008.
  • Mr. Chirag Paunwala, “Robust watermarking techniques”, SGSITS Indore, 2006
  • Ms Hiral Desai, “ Correlation based watermarking technique”, M S University Baroda. 2005.

Current B.Tech Students 2016 - 17

To be finalized 

Past B.Tech Student

  • 2014-15, Anuradha Chaudhary, "Development of Steganography and steganalysis framework", Dharmsinh Desai University, Nadiad.
  • 2015 - 16, Aditya Parikh, "Pest and Disease identification in cotton crop of North Gujarat", SEAS, AU
  • 2015 - 16, Anmol Anubhai, Rahul Patel, Shashwat Sanghavi, Kahinee - A Voice Aided Service for Rural Healthcare, SEAS, AU 


  • Best Paper Award at IEEE International Conference On Computing, Analytics and Security Trends (CAST-2016)" at College of Engineering Pune during 19th to 21st December, 2016.

            Team: India Mehul S Raval, Vaibhav B Joshi, PhD Scholar, SEAS

                     Japan Prof. Minoru Kuribayashi , Associate Professor, Okayama University

  • Appreciation Award as Guide under Gandhian Young Technological Award (GYTI) - 2016 to CheckIT: A Low cost mobile OMR system, 

Team members:Students Shaswat Sanghavi and Rahul Patel,  B.Tech ICT

 Guide Mehul S Raval, Dhruv Gupta, March 2016

  • Distinguished Speaker Computer Society of India, Region III, 2015

  • Appreciation Certificate for "Dedicated leadership and support of the activities for SPS Chapter", IEEE Signal Processing society (SPS), 2014

  • Elected as Senior Member (SM), IEEE, 2013

  • IEEE Region-10 Outstanding Branch Counselor award for 2012.

  • Elected as Senior Member, Computer Society of India (CSI), 2009.

  • Sardar Patel University and Hari Om Ashram Prerit Best Computer Science and Engineering Paper award, 2008.

  • Elected as Fellow for Institution of Electronics and Telecommunication Engineers, New Delhi, 2008.

  • Appreciation certificate from Sarvajanik College of Engineering and Technology for exemplary service, 2008.

  • Indian Society for Technical Education (ISTE) Best Engineering College Teacher award for the State of Gujarat, 2005.

  • Young Scientist Fellowship by Department of Science and Technology, GUJCOST, Govt. of Gujarat, 2005.

  • Securing Best Chapter award for CSI Surat chapter for Category III, 2004-05.

  • Best Paper award at National Conference on Image Processing (NCIP) Bangalore, 2005.


134, School of Engineering and Applied Science,
Ahmedabad University,
Ahmedabad Education Society FP. 4,
Near Commerce Six Roads,
Navrangpura, Ahmedabad - 380 009, India