SUBMITTED BY – TANUSHREE SHARMA ROLL NO. AE2253 ACAD YEAR 2022-2024 INTRODUCTION • Imagery and remote sensing defined as Images are raster data that represent measurements of reflected or emitted electromagnetic energy captured by a sensor on a drone, airplane, or satellite. Other types of imagery and raster data include scientific measurements of a location's properties, such as temperature and salinity at different water depths, elevation models, and seismic surveys. • Remote sensing extracts meaningful information from imagery. It applies image processing techniques to identify and extract various types of information about features of interest, such as vegetation type and health, type of urban development, and identifying and analyzing trends in detected objects and phenomena. Proximity and neighborhood analysis, seasonality, physical and cultural geography, vegetation growth phenomenology, climate, and other physical and environmental factors are considered when defining the type and timing of image acquisition. Toposheet : A topographic map is a detailed and accurate illustration of man-made and natural features on the ground such as roads, railways, power transmission lines, contours, elevations, rivers, lakes and geographical names. Unknown units Georeferencing Georeferencing: Georeferencing means that the internal coordinate system of a digital map or aerial photo can be related to a ground system of geographic coordinates. A georeferenced digital map or image has been tied to a known Earth coordinate system, so users can determine where every point on the map or aerial photo is located on the Earth's surface. After georeferencing, units in decimal degree Project Raster -Transforms a raster dataset from one coordinate system to another. -The coordinate system defines how your raster data is projected. You can use the same coordinate system for your data so it will all be in the same projection. Units in Meters Method for Digitalization point polyline polygon Digitalization of location, roads, forest, water body • 4 locations using point – Maujpur, Kaushambi, Patparganj, Mayur Vihar 3 • 2 roads with polyline – length first road 3.38km, length of second road is 3.395 km • Area covered using polygon by a dense forest ( is 31.589 hect. • Area covered using polygon by a water body is 22.909 hect. Digitalization shown with the toposheet Overlap with landsat 8 We can see the digitalization of locations, forest, roads and water body in satellite image Water body World Water Bodies provides a detailed base map layer for the lakes, seas, oceans, large rivers, and dry salt flats of the world. World Water Bodies represents the open water rivers, lakes, dry salt flats, seas, and oceans of the world. Here the marked water body in satellite image covers the area of 409.436 hect. Final Outcome NATURAL Vs MANMADE RESOURCES NATURAL RESOURCES MANMADE RESOURCES Natural resources are materials from the Earth that are used to support life and meet people's needs. Any natural substance that humans use can be considered a natural resource. Resources made by humans using natural resources are manmade resources. Some examples of the same include plastic, rubber, paper and brass among us. Oil, coal, natural gas, metals, stone and sand are natural resources. Other natural resources are air, sunlight, soil and water. Example - jungle, reservoir. CONCLUSION • Toposheet and Landsat images can be manupulated in the ArcMap software to locate and digitize ,settlement ,forestry, water bodies and roads. • The digitization of both natural as well as manmade resources is done via the project.
