A geographic information system (GIS) is a framework for gathering, managing, and analyzing data. Rooted in the science of geography, GIS integrates many types of data. It analyzes spatial location and organizes layers of information into visualizations using maps and 3D scenes
2. What is GIS?
Parts of GIS
DATA CAPTURE
Primary geographic data capture
Secondary geographic data capture
Earth observation Satellites
Indian Earth observation Satellites
Data Processing
3. GEOGRAPHIC
implies that locations of the data items are known, or can be
calculated, in terms of Geographic coordinates (Latitude, Longitude)
INFORMATION
implies that the data in a GIS are organized to yield useful
knowledge, often as colored maps and images, but also as statistical graphics, tables, and various
on-screen responses interactive queries.
SYSTEM
implies that a GIS is made up from several inter-related and
linked components with different functions. Thus, GIS have functional capabilities for data capture,
input, manipulation, transformation, visualization, combinations, query, analysis, modelling and
output.
4. GEOGRAPHICAL
INFORMATION SYSTEM
A set of tools for
o Data Collecting(Capture)
o Storing
o Manipulating
o Retrieving
o Transforming and Display of Spatial Data from the Real World
5. Two main types of data capture are
Primary data sources are those collected in digital format specifically for use in a GIS
project.
Secondary sources are digital and analog datasets that were originally captured for
another purpose and need to be converted into a suitable digital format for use in a GIS
project.
7. Data capture using scanners
Photogrammetry
COGO data entry (coordinate geometry)
8. Earth observation satellite or Earth remote sensing satellite is satellite specifically
designed for Earth observation from orbit, similar to spy satellites but intended for
non-military uses such as environmental monitoring, meteorology, map making etc.
The first occurrence of satellite remote sensing can be dated to the launch of the
first artificial satellite, Sputnik 1, by the Soviet Union on October 4, 1957.Sputnik 1
sent back radio signals, which scientists used to study the ionosphere.
9.
10. Cartosat-1(5 May 2005 )
Cartosat-2(10 January 2007 )
Cartosat-2A(dedicated satellite for the Indian Armed Forces,2008)
Cartosat-2B(2010)
Cartosat-2C(2016)
Cartosat-2D(Feb 2017)
Cartosat-2E(June 2017)
Cartosat-2F(Jan 2018)
Cartosat-3(may be launched in 2019 or later)
11. Digital Processing of different spectrums of light such as visible spectrum(Digital
Image Processing),Infrared,Radar/Radio etc
21. Geographic Information System play the role as the backbone of the information
system for any country.
Geographic Information System is used widely in civil as well as military
applications.
The data interpretation play an important role in Geographic Information
System.
Geographic Information System is combined effort by different Strems of
Engineering.
22. [1.] OpenCV-Python Tutorials
Documentation by Alexander Mordvintsev & Abid K :https://docs.opencv.org/3.0-
beta/doc/py_tutorials/py_tutorials.html
[2.] https://en.wikipedia.org/wiki/Cartosat
[3.] http://www.emrclub.in/pages/projectView.php
[4.] https://en.wikipedia.org/wiki/Earth_observation_satellite
[5.] https://en.wikipedia.org/wiki/Geographic_information_system
[6.] https://earth.google.com/web/
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