B S Daya Sagar


Systems Science and Informatics Unit


Hearty Congratulations Aditya Challa on being confirred pristegious Raman-Charpak Fellowship Award - 2017

Hearty Congratulations H. M. Rajasekhara and Sravan Danda on getting Travel Grant Award to Attend IGARSS 2017, Fort Worth, Dallas, USA.

Teaching along with my Senior Research Fellows Sravan Danda and Aditya Challa an elective "Mathematical Morphology & Applications" to the II Semester of Final Year BMath - 2017.

Special issue on “Applied Earth Observations and Remote Sensing in India” of IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing. Guest Editors: Avik Bhattacharya, Lorenzo Bruzzone, B. S. Daya Sagar, Paul A. Rosen. Submission deadline : March 13, 2017.

Lecturing on 27 January 2017 at the Workshop on 'Mathematical Genomics' (23-28 January 2017) jointly organized by the Applied Statistics Unit of Indian Statistical Institute-Kolkata, and the Bioinformatics Centre, Tripura University, Agartala, India.

Full-Day Tutorial on "Mathematical Morphology in Interpolations and Extrapolations", on 23 July 2017, During IGARSS 2017, Fort Worth, Texas, USA, 23-28 July 2017. Registrations would begin from 23 March 2017. Course Instructor: B. S. Daya Sagar.

Short Course on "Mathematical Morphology in Interpolations and Extrapolations" on 03 September 2017 during 18th Annual Conference IAMG 2017 (2-9 September 2017), Esplanade Hotel Fremantle, Western Australia. (Course Instructor: B. S. Daya Sagar)

Teaching a Three-Credit Hour Course (20 Lectures) on "Mathematical Morphology & Applications" during Spring (March-May 2017) for Doctoral Students of Information and Communication Technology (ICT), International Doctoral School of the University of Trento, Italy.

News: A friend and a research collaborator Prof. Qiuming Cheng is elected as the President to serve IUGS for Five Years: Hearty Congratulations Qiuming!

One-Day Tutorial on "Mathematical Morphology in Geosciences and Geoinformatics", 35th IGC at Capetown, South Africa, 28 August 2016 (Sunday).

ISRO sanctioned grant for the project (2016-19) entitled "Quantitative Morphologic and Scaling Analyses of Lunar Digital Elevation Models (LDEM) Derived from TMC Data of Chandrayaan-1 Mission via Mathematical Morphology and Fractal Geometry"

Keynote Adress on "Overview on Mathematical Morphology and its Applications with Emphasis on Morphological Interpolations" at International Multi-Conference on Information Processing–2016, on 21 August 2016, at Capitol Hotel, Raj Bhavan Road, Bangalore, India.

Hearty Congratulations Sampriti Soor on slection for ISI-JRF-CS 2016

Hearty Congratulations Sravan Danda on getting Travel Grant Award to Attend IGARSS 2016, Beijing, China.

IEEE GRSS Global Chapters' Chairs Meeting, IGARSS 2016, Beijing, China, 10 July 2016.

One Week Faculty Development Programme on "Recent Trends in Signal and Image Processing", June 06-12, 2016, PSG College of Technology, Coimbatore, India.

Lectures at the Amrita University-Coimbatore, 20 April 2016.

Lecture at the IIT-Bombay, 17-18 April 2016.

Lectures at the ISI-Tezpur Centre, 16-18 March 2016.

Chandrayaan Project Proposal Review Meeting, ISRO-SAC, Ahmedabad on 14 March 2016.

DST-SERB sanctioned grant for the project (2016-19) entitled "Quantitative Characterization of Complex Topologically Prominent Components of Porous Media derived from Rocks of Petrologic Significance via Mathematical Morphology and Fractal Geometry"

Lectures at Gayathri Vidya Parishad, JNTU, Waltair on 2 March 2016.

PhD in Computer Science at the Indian Statistical Institute at Kolkata, Bangalore and Chennai campuses. For details browse through http://www.isical.ac.in/~deanweb/phdcs. How to apply for this, please browse through http://www.isical.ac.in/~admission. Prospectus of Indian Statistical Institute for 2016-17.

News: Hearty Congratulations to Associate Professor Dr. Alan Tan Wee Chiat (with whom I had a close association in the capacity of his PhD Supervisor during 2004-08) who has been recently appointed as the Dean of Faculty of Engineering & Technology (FET), Multimedia University-Malaysia.

My recent papers include: B. S. Daya Sagar and Lim Sin Liang, 2015, Ranks for Pairs of Spatial Fields via Metric Based on Grayscale Morphological Distances, IEEE Transactions on Image Processing, v. 24, no. 3, p. 908-918, DOI:10.1109/TIP.2015.2390135).
B. S. Daya Sagar and Lim Sin Liang, 2015, Morphing of Grayscale DEMs via Morphological Interpolations, IEEE Journal on Selected Topics on Applied Earth Observation and Remote Sensing, v. 8, no. 11, p. 5190-5198. DOI: 10.1109/JSTARS.2015.2490098.

New: Following are the two potential topics I propose for JRF-CS Selected for the year 2016. Anyone interested may contact me at: bsdsagar@isibang.ac.in, bsdsagar@yahoo.co.uk, 9880893291. (1) Shape-Size (Granulometric) and Recursive Pruning Based Distributions for Iterated Bisections of Multiscale, Multidimensional, Multitemporal, Multispectral Spatial Data for Deriving Fractal and Multifractal-Like Image Characteristics, and (2) Development of Morphology-Based Algorithms for Spatial Informatics and Digital Geographics.

Time Schedules of my Lectures: Semester (July-Dec 2015), I taught two subjects--Mathematical Morphology & Applications for BMath (Monday: 2.00PM-3.00PM; Wednesday: 10.00AM-11.00AM; Friday: 10.00AM-12.10PM), and Information Storage Retrieval & DBMS for MSLIS (Monday: 9.30AM-11.00AM; Wednesday: 3.30PM-5.00PM).

I am involved as: Review Editor, Environmental Informatics-Frontiers; Editorial Advisory Board Member, Computers & Geosciences

DST-IEEE- Summer-School-2015 on "Mathematical Morphology in Geosciences", 24 March - 08 April 2015. Lecture-Schedule.

Attended by invitation IEEE GRSS Chapter Chairs Meeting, Joint Chapter Chair & Globalization Committee Meting, and Globalization Committee Meeting to discuss Creation of a Plan with Action Items for Globalization at Milan, Italy on 26 July 2015.

IGARSS 2015: Milan, Italy, 26-31 July 2015

Half-Day Tutorial on "Mathematical Morphology in Geosciences and GISci", IGARSS 2015: Milan, Italy, 26-31 July 2015

IAMG 2015 Annual Conference, Freiberg (Saxony), Germany: 5 - 13 September 2015.

A new elective for BMath-Mathematical Morphology and Applications

A new Group-B Course for ISI JRF-CS-Mathematical Morphology And Applications

A new elective for B.Tech (Electrical and Electronics Engineering at the National Institute of Technology Karnataka Surathkal-EE443-Mathematical Morphology & Applications to Signal Processing

A new Bangalore Section IEEE Geoscience and Remote Sensing Society Chapter

Special Issue on "Filtering and Segmentation with Mathematical Morphology", IEEE Journal of Selected Topics in Signal Processing, v. 6, no. 7, p. 737-886, 2012. (Guest Editors: Laurent Najman, Junior Barrera, B. S. Daya Sagar, Petros Maragos, and Dan Schonfeld)

International Summer & Winter Term Courses of Indian Institute of Technology-Kharagpur

Educational Background

B. Sc. Andhra University, India, 1987.

M. Sc. (Tech), Andhra University, Faculty of Engineering, India, 1990.

Ph.D., 1994, Faculty of Engineering, Andhra University, India. Thesis Title: Applications of Remote Sensing, Mathematical Morphology, and Fractals to Study Certain Surface Water Bodies. (Thesis Advisors: Prof. B. S. Prakasa Rao (Andhra University College of Engineering) and Prof. S. V. L. N. Rao (IIT-Kharagpur))

Research Interests

Mathematical Morphology, Theoretical GIS, Spatial Information Retrieval, Analysis, Reasoning and Modelling, Satellite Remote Sensing data analysis, Digital Image Processing, Geocomputation, Spatial Analysis and Geographic Information Systems, Complex geomorphic systems, Geomorphic dynamical systems, Modelling the behavior of certain geomorphic systems via Chaos and Bifurcation theories, Fractals and multifractals in the quantitative analysis of certain geomorphic phenomena.

Terrestrial surfaces of Earth and Earth-like planets exhibit variations across spatio-temporal scales. Recent advancements in remote sensing technologies that take the advantage of wavelength bands of wide ranging electromagnetic spectra paved a way to properly sense the terrestrial-oceanic-atmospheric fields. Now various different satellites provide optical and microwave remotely sensed data. Optical images are usefully acquired by employing the solar radiation as main energy to sense the terrestrial and/or ocean surfaces. While such optical data have limitations due to cloud cover, microwave sensing mechanisms that are operated via backscatter strength of the radar signal provide data that are useful under all weather conditions. It is recently mentioned that such data that are being acquired with huge expenditure are being underutilized. Dr. Sagar's works mainly address the (i) feature retrieval from remotely sensed data of both the types, (ii) analysis, (iii) reasoning and (iv) modeling phenomena that are retrieved at multiple spatial and temporal scales. To address the four topics, which are intertwined, Sagar's research works in the past and present involve development of original algorithms and modeling techniques that are mainly based on mathematical morphology, fractal geometry, and chaos theory concepts. In order to develop models, synthetic data sets are considered. The success of the model is further validated through testing the model on realistic data such as remotely sensed data.

For prospective students aspiring to pursue research:

List of Potential Topics for Candidates Qualified in ISI-JRF-Computer Science Selection Test (to be held in May 2016) to Pursue PhD Programme Under My Supervison at the Systems Science and Informatics Unit (SSIU), ISI-Bangalore Centre: Mathematical Morphology, Digital Geometry, Earth Systems Science, Spatial Informatics, Theoretical GISci and Geocomputation, Satellite Remote Sensing Data Analysis, Digital Image Processing, Digital Geographics, Spatial Information Visualization, Quantitative Spatial Reasoning, Modelling the behaviour Complex Terrestrial Systems via Chaos and Bifurcation Theories, Fractals and Multifractals.

Contact Address

Systems Science and Informatics Unit
Indian Statistical Institute-Bangalore Centre
Room No.: A-27 (New Annex-2nd Floor)
8th Mile Mysore Road, R.V. College P.O
Bangalore-560059, India.

E-mail: bsdsagar@isibang.ac.in, bsdsagar@yahoo.co.uk
Tel. Ph (O): 00-91-(080)-28483002/3003/3004/3005/3006 (Ext:540)
Homepage: http://www.isibang.ac.in/~bsdsagar

A few words about my research accomplishments:

I work in the fields of mathematical morphology and its applications in spatial informatics. In these areas, so far SIX students have obtained PhD degrees for their theses adjudicated by internationally well-known experts. Details can be seen at: http://www.isibang.ac.in/~bsdsagar/Teaching-Supervision.htm. The results reported in these theses were published in international journals of repute. More details along with a list of publications can be seen at: http://www.isibang.ac.in/~bsdsagar/Publications.htm and http://www.isibang.ac.in/~bsdsagar/Books.htm. I have been a Recognized Registered Supervisor at IIT-Kharagpur, Computer Science Departments of Bharathiar University, Sathyabhama University, and at Department of Geoengineering-Centre for Remote Sensing and Information Systems-Faculty of Engineering of Andhra University.