LAB1_BHAWNA_19103022
Författare:
BHAWNA
Last Updated:
för 5 år sedan
Licens:
Creative Commons CC BY 4.0
Sammanfattning:
GOOGLE EARTH
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GOOGLE EARTH
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\begin{document}
\title{\textbf{EXPLORING GEOINFORMATICS USING GOOGLE EARTH AND QGIS }\\\small \vspace{10pt}BHAWNA HARISH TOTLANI\\
Roll Number: 19103022\\
Department of Civil Engineering\\
Email: bhawnat@iitk.ac.in}
\date{5 Augest,2018}
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\section{Introduction}
Google Earth is a computer program that renders a 3D representation of Earth based primarily on satellite imagery. The program maps the Earth by superimposing satellite images, aerial photography, and GIS data onto a 3D globe, allowing users to see cities and landscapes from various angles.\\
Google Earth provides a series of other tools through the desktop application. Additional globes for the Moon and Mars are available, as well as a tool for viewing the night sky.\\
QGIS functions as geographic information system (GIS) software, allowing users to analyze and edit spatial information, in addition to composing and exporting graphical maps. QGIS supports both raster and vector layers; vector data is stored as either point, line, or polygon features. Multiple formats of raster images are supported, and the software can georeference images
QGIS supports shapefiles, coverages, personal geodatabases, dxf, MapInfo, PostGIS, and other formats. Web services, including Web Map Service and Web Feature Service, are also supported to allow use of data from external sources.\\
\section{Methodology:} In this assignment,we will be focussing on the google earth and its use in daily life.\\
We will interprete image and will tell us about all the features and will know reasons of anamoly.\\
we will also try to import and overlay the imported kmz file into QGIS and various maps besides google earth.\\
\subsection{Google Earth}
\subsubsection{A CAPITAL OF RAJASTHAN}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{1.png}
\caption{image }\label{fig:Figure_3}
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\subsubsection{Historical place}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{2.png}
\caption{image }\label{fig:Figure_3}
\end{figure}
\subsubsection{KANPUR WITH IITKANPUR}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{3.png}
\caption{image }\label{fig:Figure_3}
\end{figure}
\subsubsection{KANPUR CENTRAL RAILWAY STATION}
\begin{figure}[H]
\centering
\includegraphics[width=8in]{4.png}
\caption{image }\label{fig:Figure_3}
\end{figure}
\subsubsection{IIT KANPUR GATE}
\begin{figure}[H]
\centering
\includegraphics[width=8in]{5.png}
\caption{image }\label{fig:Figure_3}
\end{figure}
\subsubsection{IITKANPUR LIBRARY}
\begin{figure}[H]
\centering
\includegraphics[width=8in]{6.png}
\caption{image }\label{fig:Figure_3}
\end{figure}
\subsubsection{ANOMALIES}
Images may be taken from different satellites\\
Images may be taken at different time interval\\
NON SELECTIVE SCATTERING might be the possible reason.
\subsubsection{ POSSIBLE REASON OF COLOUR CHANGE IN IMAGES }
change of colour of images around boundaries may be because of following given reasons\\
capturing of image from different satellites.\\
capturing of image during different duration.\\
nonselective scattering can also be one of the possible reason\\
\subsubsection{INTERPRETATION OF IMAGES}
In AOI 2: we can see a barren land with few closely grown trees or vegetation,it may be a rural area.\\
In AOI 3:we can see a round place with tress all around the boundary of that round place,and just in the middle we can observe some black colour image which may resemble a chimney or it may also be some abandoned building structure.\\
In AOI 4: we can see some ellipsoidal area and just in the middle of that area, we can see some kiln chimney because of its black colour and shape,we are able to guess that it is a chimney .\\
In AOI 6: possibility of dry water body \\
\subsubsection{ANOMALY AND INTERPRETATION OF FEATURE AT AOI 7}
It is seen as a road network but it is a railway which is mentioned on the railway track by zooming out the image.
\subsubsection{APPLICATIONS OF GOOGLE EARTH}
To locate and remove landmines\\
Relief workers use the tool for crisis response after earthquake.\\
worldwildlife fund and many other organisations are using the google earth to protect the biodiversity.\\
with the help of weather layer ,we can follow weather patterns all the world and will get to know about the weather even before the meteorologists give it to us.\\
we can create location tracking log of our position over time.
\subsubsection{INNOVATIVE APPLICATION OF GOOGLE EARTH}
Through TELEMEDICINE ,we can reach remote areas and can cure patients which are living in inaccessible areas where doctors cannot reach.
\subsubsection{OTHER IMAGE SERVERS SIMILAR TO GOOGLE EARTH}
GOOGLE MAPS\\
OpenStreetMaps\\
2GIS\\
Google Street View\\
NASA World Wind\\
Marble\\
MapQuest\\
\subsubsection{Difference between "kml" and "kmz" file}
KML file text based files composed of tags similar to XML\\
KMZ are KML (keyhole markup language) files that have been zipped up along with their related files, such as image overlays. This means that you can share image overlays and custom icons without having to publish the files on an external web server or mail them as an attachment.
KML and KMZ are two file extensions used for different instances of a Geospatial information file, known as Keyhole Markup Language.
KML is a tag based XML language that is used to store attributes of a map or a model. Each KML file is composed of a collection of graphic elements, images, and settings.
KMZ is a compressed version of the KML file.
\subsubsection{SPECIALITY OF "KMZ" FORMAT}
KMZ files contains placemarks featuring a custom name; the latitudinal and longitudinal coordinates for the location, and 3D model data. KMZ files can be opened by Google Earth, or unzipped with a compression utility, such as WinZip on Windows, MacZip for Macintosh users, and Zip and UnZip for UNIX systems.
\subsection{QGIS}
\subsubsection{SNAPSHOTS OF THE TASK GIVEN}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{7.png}
\caption{AOI 1 }\label{fig:Figure_5}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{8.png}
\caption{AOI 2 }\label{fig:Figure_5}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{9.png}
\caption{AOI 3 }\label{fig:Figure_6}
\end{figure}\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{10.png}
\caption{AOI 4 }\label{fig:Figure_7}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{11.png}
\caption{AOI 5 }\label{fig:Figure_8}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{12.png}
\caption{AOI 6 }\label{fig:Figure_9}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{13.png}
\caption{AOI 7 }\label{fig:Figure_10}
\end{figure}
\begin{figure}[H]
\centering
\includegraphics[width=5.6in]{14.png}
\caption{OpenLayers Plugin }\label{fig:Figure_11}
\end{figure}
\section{DISCUSSIONS}
In this assignment we have learn \\
Google Earth and its use n daily life\\
effect of spatial resolution of satellite data\\
image interpretation\\
we have interpreted different features of image by visual interpretation\\
we have also learned QGIS software ,installing of open layers plugin,importing kmz fle into qgis and overlaying the imported kmz file on different maps
\section{CONCLUSIONS}
By interpreting images ,we come to know about different features on the ground, spatial resolution of images,we have learnt about kml and kmz file.With the help of google earth, we can locate any point by determining its longitude,latitude and elevation ,we can access any remote or inaccessible area without being in physical contact with the object.
\section{REFERENCES}
Wikipedia\\
Internet\\
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