IIRS Outreach Programme on
"Remote Sensing and Digital Image Analysis"
21st August – 15th September, 2017
Indian Institute of Remote Sensing, Dehradun conducted an Outreach Programme on "Remote Sensing and Digital Image Analysis" during 21st August – 15thSeptember 2017. The program was organized at Dronacharya Group of Institutions, Greater Noida through A-View and was coordinated by Mr. Vibhooti Narayan Mishra, Assistant Professor in Civil Engineering Department.
Dr. A Senthil Kumar, Director IIRS delivered the introductory lecture in which he discussed the facts of Indian Space Programme, Infrastructure, Launch Vehicles, Space Assets current programmes and he also shared information regarding various satellites used for Communication, Remote Sensing, Navigation, Scientific Observations, etc. and their applications in various fields like Transportation (Aviation, Railways, Roadways, and Marine), Disaster Management, Planning, Communication, Survey, Environmental Monitoring.
Mrs. Manu Mehta, Scientist - Photogrammetry and Remote Sensing Department, discussed “Basics of Remote Sensing”. She explained the methodology of collecting scientific data through remote sensing, electromagnetic radiation and wave theory. She explained wave particle duality, visible range, infrared range, microwave range, radiometry, blackbody, Plank’s Law of Radiation, spectral emissivity, interaction process, spectral signatures, scattering and effect of atmosphere on remote sensing.
Mr. Vinay Kumar, Scientist - PRSD (Photogrammetry and Remote Sensing Department) conducted the session on “Earth Observation Sensors and Platforms”. During his session, he explained Remote Sensing Process, Sensor and Platforms, Orbits and Satellite orbital characteristics, Spatial and Spectral Resolution, Various earth observation satellite and IRS satellite series
Mr. Yogesh Kant, Scientist - SF from Marine & Atmospheric Science Department, discussed “Thermal Remote Sensing”. During his lecture, he covered fundamentals of thermal infrared spectroscopy, thermal basics, emissivity, Kirchoff’s Radiation Law, thermal properties of materials, application of TIR remote sensing, history of thermal infrared remote sensing, various imaging modes, thermal infrared data collection, thermal infrared detectors, satellite data processing, atmospheric transmission, INSAT system, MOSDAC.
Dr. Hina Pande from Photogrammetry & Remote Sensing Department, conducted the session on “Spectral Signatures and Image Interpretation”. She discussed electromagnetic spectrum and significance of Image Interpretation, Spectral Signature, significance of spectral signature and spectral reflectance curve in remote sensing. The interpretation of image and associated terms and comparison between Manual vs Digital interpretation were discussed.
Ms. Minakshi Kumar from Photogrammetry and Remote Sensing Department discussed “Digital Image Processing- Basic Concepts”. Various atmospheric induced errors and corrections like Haze, Skylight, Sun angle and their effects were discussed. Earth rotation effect, rectification, coordinate transformation, polynomial transformation, nearest neighbor, cubic convolution were also explained.
Dr. Poonam S. Tiwari, Scientist, discussed “Digital Image Enhancement”. She explained image enhancement, types of enhancement, radiometric enhancement, contrast enhancement, types of contrast enhancement, non-linear contrast enhancement, histogram equalization, spatial frequencies, spatial filtering, filtering, types of filter, Robert’s edge detector, Kirsch edge detector, image transformation, image division, principal component analysis-graphical representation .
Dr. Poonam S. Tiwari discussed “Digital Image Classification”. The evaluation of signature, Band Classification and various supervised classification methods (Algorithm Methods), Clustering, Accuracy, KAPPA Coefficient etc., were also discussed.
Mr. Shashi Kumar, Scientist of IIRS discussed “Microwave (SAR) Remote Sensing”. He explained electromagnetic radiation, wavelength and frequency, microwave bands, microwave sensors, active microwave sensors, SAR satellites, radar geometry, synthetic aperture radar, ground swath width, SAR resolution, azimuth resolution, range resolution, slant range/ground range, SAR data, radar polarization, SAR modes, geometric distortions in radar, layover, shadow, surface roughness, smooth and rough “Rayleigh Criteria”, radar backscatter and incidence angle, incidence angle and local incidence angle, volume scattering, Complex SAR Image, speckle, SAR data format, applications of SAR.
7 th September
Ms. Minakshi Kumar discussed “Demonstration: Image Processing”. She explained Image Processing Software , ILWIS & its functionalities, Dataset and Software, UI of ILWIS and processing of Image using ILWIS (like Visualization, Pixel Value, Maplist, Colour Composites, Contrast Enhancement, Linear stretching, etc) Supervised and Unsupervised Classification, Geometric corrections and image referencing.
11 th September
Mrs. Shefali Agrawal from Photogrammetry and Remote Sensing Department, discussed “Hyperspectral Remote Sensing”. She explained basic properties of light like Absorption, Reflection, Scattering, etc., kinds of image, multispectral vs hyperspectral remote sensing, spectral sensing, hyperspectral imaging, absorption spectrum, limitation and working principle of it, different sensors and application areas.
15 th September
The program ended with the online examination held on 15th Sept 2017. Keshav Yadav(CE V), Md Ali (CE V) and Shubham Singh (CSE V) successfully cleared the exam in First Division.