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Avik Bhattacharya

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Avik Bhattacharya
Born
Kharagpur, India
NationalityIndian
CitizenshipIndia
Alma materIndian Institute of Technology Kharagpur
Télécom ParisTech, France
INRIA Sophia Antipolis, France
Known forSynthetic Aperture Radar (SAR)
Radar Polarimetry
Bio and Geophysical Parameter Estimation
Scientific career
FieldsRadar remote sensing
InstitutionsIndian Institute of Technology Bombay
Canadian Centre for Remote Sensing
Doctoral advisorHenri Maître
Josiane Zerubia
Websitehttp://www.mrslab.in/Avik/

Avik Bhattacharya (born 1976) is a professor at the Centre of Studies in Resources Engineering, Indian Institute of Technology Bombay,[1][2] Mumbai, India. He has been working in the field of radar polarimetry theory and applications for more than a decade. His main focuses on the use of synthetic aperture radar (SAR) data for land use classification, change detection and qualitative and quantitative biophysical and geophysical information estimation.

Education

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Bhattacharya received his M.Sc. degree in mathematics from Indian Institute of Technology Kharagpur, West Bengal, India, in 2000, and the Ph.D. degree in Indexing of Satellite Images Using Structural Information[3] from jointly at the Department of Traitement et Interprétation des Images, Télécom Paris-Tech, Paris, France and INRIA, ARIANA Project Group, Sophia Antipolis, France in 2007.[4]

Professional career

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Bhattacharya joined the Centre of Studies in Resources Engineering, Indian Institute of Technology Bombay, in 2011, as an assistant professor.[1] He has been the principal and co-principal investigator of numerous projects sponsored by the Department of Science and Technology (DST), Defense Research and Development Organization (DRDO), Indian Space Research Organization (ISRO) and GEOGLAM-JECAM SAR Inter-Comparison Experiment.[5] He has authored several scientific publications in refereed international journals and conference proceedings

Bhattacharya was the editor-in-chief of the IEEE Geoscience and Remote Sensing Letters (GRSL) (2019-2024).[6][7][8][9] He is also the founding chairperson of the IEEE Geoscience and Remote Sensing Society (GRSS) Chapter, Bombay section, India.[8]

Bhattacharya has also served as a visiting professor at the following institutes:

Major research contributions

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  • Stochastic Distance Based Y4O Polarimetric SAR Decomposition (SDY4O)

This is a radar polarimetric decomposition technique based on the field of statistical information theory. Here a method is devised to estimate the polarization (OA) orientation angle from the full polarimetric SAR data using the Hellinger distance.[14][15]

  • Adaptive General Four-Component Scattering Power Decomposition

In this method, one out of the two types of complex special unitary transformation matrices is identified and chosen to transform a unitary rotated coherency matrix in real space based on the greatest value of degree of polarization (DOP) commonly termed as adaptive general four-component scattering power decomposition method (AG4U).[16][14]

  • Sen4Rice – A cloud-based SAR processing pipeline with Google Earth Engine

Here a framework for monitoring and mapping of rice fields especially from rice cultivation regions of India using time-series of Sentinel-1 data is developed using the Google Earth Engine's cloud computing platform.[17]

Other research

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Other significant research includes development of various methods like relative de-correlation Measure in Polarimetric SAR decomposition,[18] decomposition algorithm development consisting (S-Ω) and Modified (m-χ) and [19][14] crop monitoring using machine learning.[20] In past, Prof. Bhattacharya was also actively involved in study related to snow dynamics in Himalayas involving SAR data from satellites like RADARSAT-2.[21]

Honors and awards

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See also

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Selected bibliography

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Articles

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  • Bhogapurapu, Narayanarao; Dey, Subhadip; Bhattacharya, Avik; Mandal, Dipankar; Lopez-Sanchez, JM; McNairn, Heather; Lopez-Martinez, Carlos; Rao, Y.S. (August 2021). "Dual-polarimetric descriptors from Sentinel-1 GRD SAR data for crop growth assessment". ISPRS Journal of Photogrammetry and Remote Sensing. 178: 20–35. Bibcode:2021JPRS..178...20B. doi:10.1016/j.isprsjprs.2021.05.013. hdl:10045/115962. S2CID 236594150.
  • Kumar, Vineet; Mandal, Dipankar; Bhattacharya, Avik; Rao, Y.S. (June 2020). "Crop characterization using an improved scattering power decomposition technique for compact polarimetric SAR data". International Journal of Applied Earth Observation and Geoinformation. 88: 102052. Bibcode:2020IJAEO..8802052K. doi:10.1016/j.jag.2020.102052.
  • Ratha, Debanshu; Pottier, Eric; Bhattacharya, Avik; Frery, Alejandro C. (May 2020). "A PolSAR Scattering Power Factorization Framework and Novel Roll-Invariant Parameter-Based Unsupervised Classification Scheme Using a Geodesic Distance". IEEE Transactions on Geoscience and Remote Sensing. 58 (5): 3509–3525. Bibcode:2020ITGRS..58.3509R. doi:10.1109/TGRS.2019.2957514. S2CID 195700216.
  • De, Shaunak; Bruzzone, Lorenzo; Bhattacharya, Avik; Bovolo, Francesca; Chaudhuri, Subhasis (January 2018). "A Novel Technique Based on Deep Learning and a Synthetic Target Database for Classification of Urban Areas in PolSAR Data". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 11 (1): 154–170. Bibcode:2018IJSTA..11..154D. doi:10.1109/JSTARS.2017.2752282. S2CID 29626919.
  • Muhuri, Arnab; Manickam, Surendar; Bhattacharya, Avik (July 2017). "Scattering Mechanism Based Snow Cover Mapping Using RADARSAT-2 C-Band Polarimetric SAR Data". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 10 (7): 3213–3224. Bibcode:2017IJSTA..10.3213M. doi:10.1109/JSTARS.2017.2681719. S2CID 23560686.

Books

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References

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  1. ^ a b c "Avik Bhattacharya". www.mrslab.in.
  2. ^ "Faculty | Center of Studies in Resources Engineering (CSRE), IIT Bombay". www.csre.iitb.ac.in.
  3. ^ Bhattacharya, Avik (14 December 2007). Indexing of satellite images using structural information. Thèses en ligne de ParisTech (Thesis). Télécom ParisTech. pp. 1–179.
  4. ^ "TélécomParisTech/TSI -- PhD Defense of Avik Bhattacharya". www.tsi.telecom-paristech.fr. Télécom ParisTech/TSI.
  5. ^ "JECAM SAR Inter-Comparison Experiment". www.geoglam.org. 6 June 2018.
  6. ^ "Editor-in-Chief of IEEE Geoscience and Remote Sensing Letters (GRSL) 2019 | IIT Bombay". www.iitb.ac.in.
  7. ^ "GRSL Archives". GRSS | IEEE | Geoscience & Remote Sensing Society. 14 February 2021.
  8. ^ a b "Chapters". GRSS | IEEE | Geoscience & Remote Sensing Society.
  9. ^ "IEEE Geoscience and Remote Sensing Letters (GRSL)".
  10. ^ "ATELIER RECHERCHE IMAGERIE RADAR ET CRYOSPHÈRE À L'ÉCOLE D'INGÉNIEURS". www.polytech.univ-smb.fr.
  11. ^ "Séminaire Dr. Avik Bhattacharya – jeudi 23 mai 2019 – 13h30 – A126". LISTIC (in French). 23 May 2019.
  12. ^ "Remote Sensing Spring School in Argentina – SAR for Environmental and Production Monitoring" (PDF). accedacris.ulpgc.es.
  13. ^ a b "Radar Remote Sensing: Perspectives and Applications". tifr.res.in. Tata Institute of Fundamental Research (TIFR).
  14. ^ a b c Muhuri, Arnab; De, Shaunak; Manickam, Surendar; Dhingra, Swinky; Hariharan, Siddharth; Maity, Abhishek; Ratha, Debanshu; Bhattacharya, Avik (7 December 2016). "Novel Scattering Power Decomposition Techniques for Full and Compact Polarimetric SAR Data". National Symposium on Recent Advances in Remote Sensing and GIS with Special Emphasis on Mountain Ecosystems & Annual Conventions of Indian Society of Remote Sensing & Indian Society of Geomatics.
  15. ^ Bhattacharya, Avik; Muhuri, Arnab; De, Shaunak; Manickam, Surendar; Frery, Alejandro C. (July 2015). "Modifying the Yamaguchi Four-Component Decomposition Scattering Powers Using a Stochastic Distance". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 8 (7): 3497–3506. arXiv:1504.01000. Bibcode:2015IJSTA...8.3497B. doi:10.1109/jstars.2015.2420683. ISSN 1939-1404. S2CID 6498352.
  16. ^ Bhattacharya, Avik; Singh, Gulab; Manickam, Surendar; Yamaguchi, Yoshio (October 2015). "An Adaptive General Four-Component Scattering Power Decomposition With Unitary Transformation of Coherency Matrix (AG4U)". IEEE Geoscience and Remote Sensing Letters. 12 (10): 2110–2114. Bibcode:2015IGRSL..12.2110B. doi:10.1109/lgrs.2015.2451369. ISSN 1545-598X. S2CID 27146811.
  17. ^ Mandal, Dipankar; Kumar, Vineet; Bhattacharya, Avik; Rao, Yalamanchili Subrahmanyeswara; Siqueira, Paul; Bera, Soumen (December 2018). "Sen4Rice: A Processing Chain for Differentiating Early and Late Transplanted Rice Using Time-Series Sentinel-1 SAR Data With Google Earth Engine". IEEE Geoscience and Remote Sensing Letters. 15 (12): 1947–1951. Bibcode:2018IGRSL..15.1947M. doi:10.1109/lgrs.2018.2865816. ISSN 1545-598X. S2CID 56172393.
  18. ^ Ratha, D.; Surendar, M.; Bhattacharya, A. (22 December 2016). "Improvement of PolSAR decomposition scattering powers using a relative decorrelation measure". Remote Sensing Letters. 8 (4): 340–349. arXiv:1704.06054. doi:10.1080/2150704x.2016.1271159. ISSN 2150-704X. S2CID 119349808.
  19. ^ Bhattacharya, A.; De, S.; Muhuri, A.; Surendar, M.; Venkataraman, G.; Das, A.K. (25 September 2015). "A new compact polarimetric SAR decomposition technique". Remote Sensing Letters. 6 (12): 914–923. Bibcode:2015RSL.....6..914B. doi:10.1080/2150704x.2015.1088669. ISSN 2150-704X. S2CID 124418207.
  20. ^ Subramani, Balaram Vishnu; Raman, Spoorthy. "Machine learning helps monitor crop growth | IIT Bombay". www.iitb.ac.in.
  21. ^ Muhuri, Arnab; Manickam, Surendar; Bhattacharya, Avik (July 2017). "Scattering Mechanism Based Snow Cover Mapping Using RADARSAT-2 C-Band Polarimetric SAR Data". IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. 10 (7): 3213–3224. Bibcode:2017IJSTA..10.3213M. doi:10.1109/JSTARS.2017.2681719. ISSN 1939-1404. S2CID 23560686.
  22. ^ "IEEE Geoscience and Remote Sensing Society (GRSS)'s Post". www.linkedin.com. IEEE. 16 July 2024.
  23. ^ "2007–2018 Endeavour Scholarship and Fellowship Recipients" (PDF). www.internationaleducation.gov.au. The Department of Education, Skills and Employment, Australian Government.
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