The document discusses the four types of image resolution: spatial, spectral, radiometric, and temporal resolution. Spatial resolution refers to the ability of a sensor to identify the smallest details visible in an image. Spectral resolution is the sensor's ability to distinguish between narrow wavelength bands, while radiometric resolution refers to its ability to detect small differences in energy levels. Temporal resolution describes how frequently data is captured for a given location. Higher resolution in all four types provides more detailed, clear images for analysis.
Types of Platforms
1. Airbrone Platforms
2. Spacebrone Platforms
Platforms are Vital Role in remote sensing data acquisition
Necessary to correct the position the remote sensors that collect data from the objects of interest
this presentation briefly describes the digital image processing and its various procedures and techniques which include image correction or rectification with remote sensing data/ images. it also contains various image classification techniques.
A remote sensing system uses a detector to sense the reflected or emitted energy from the earth's surface, perhaps modified by the intervening atmosphere. The sensor can be on a satellite, aircraft, or drone. The sensor turns the energy into a voltage, which an analog to digital converter turns into a single integer value (called the Digital Number, or DN) for the energy. Alternatively a digital detector can store the DN directly. We can then display this value with an appropriate color to build up an image of the region sensed by the system. The DN represents the energy sensed by the sensor in a particular part of the electromagnetic spectrum, emitted or reflected from a particular region. The principles can also be applied to sonar imagery, especially useful in water where sound penetrates readily whereas electromagnetic energy attenuates rapidly.
Definitions,
Remote sensing systems can be active or passive: active systems put out their own source of energy (a large "flash bulb") whereas passive systems use solar energy reflected from the surface or thermal energy emitted by the surface. Active systems can achieve higher resolution.
Satellite resolution considers four things: spatial, spectral, radiometric, and temporal resolution.
Electromagnetic radiation and the atmosphere control many aspects of a remote sensing system.
Satellite orbits determine many characteristics of the imagery, what the satellite sees, and how often it revisits an area.
The signal to noise ratio is important for the design of remote sensing systems.
Satellite band tradeoffs.
Interpreting satellite reflectance patterns and images uses various statistical measures to assess surface properties in the image.
The colors used on the display are gray shading for single bands, and RGB for multi-band composites. We can also perform image merge and sharpening to combine the advantages of both panchromatic (higher spatial resolution) and color imagery (better differentiation of surface materials).
Keys for image analysis
Hyperspectral imagery
Spectral reflectance library--different materials reflect radiation differently
When you georeference your raster data, you define its location using map coordinates and assign the coordinate system of the map frame. Georeferencing raster data allows it to be viewed, queried, and analyzed with your other geographic data. The georeferencing tools on the Georeference tab allows you to georeference any raster dataset.
In general, there are four steps to georeference your data:
Add the raster dataset that you want to align with your projected data.
Use the Georeference tab to create control points, to connect your raster to known positions in the map
Review the control points and the errors
Save the georeferencing result, when you are satisfied with the alignment.
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
This is all about remote sensing. Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation, especially the Earth.Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the targeted area. Special cameras collect remotely sensed imagesof the Earth, which help researchers "sense" things about the Earth.
Types of Platforms
1. Airbrone Platforms
2. Spacebrone Platforms
Platforms are Vital Role in remote sensing data acquisition
Necessary to correct the position the remote sensors that collect data from the objects of interest
this presentation briefly describes the digital image processing and its various procedures and techniques which include image correction or rectification with remote sensing data/ images. it also contains various image classification techniques.
A remote sensing system uses a detector to sense the reflected or emitted energy from the earth's surface, perhaps modified by the intervening atmosphere. The sensor can be on a satellite, aircraft, or drone. The sensor turns the energy into a voltage, which an analog to digital converter turns into a single integer value (called the Digital Number, or DN) for the energy. Alternatively a digital detector can store the DN directly. We can then display this value with an appropriate color to build up an image of the region sensed by the system. The DN represents the energy sensed by the sensor in a particular part of the electromagnetic spectrum, emitted or reflected from a particular region. The principles can also be applied to sonar imagery, especially useful in water where sound penetrates readily whereas electromagnetic energy attenuates rapidly.
Definitions,
Remote sensing systems can be active or passive: active systems put out their own source of energy (a large "flash bulb") whereas passive systems use solar energy reflected from the surface or thermal energy emitted by the surface. Active systems can achieve higher resolution.
Satellite resolution considers four things: spatial, spectral, radiometric, and temporal resolution.
Electromagnetic radiation and the atmosphere control many aspects of a remote sensing system.
Satellite orbits determine many characteristics of the imagery, what the satellite sees, and how often it revisits an area.
The signal to noise ratio is important for the design of remote sensing systems.
Satellite band tradeoffs.
Interpreting satellite reflectance patterns and images uses various statistical measures to assess surface properties in the image.
The colors used on the display are gray shading for single bands, and RGB for multi-band composites. We can also perform image merge and sharpening to combine the advantages of both panchromatic (higher spatial resolution) and color imagery (better differentiation of surface materials).
Keys for image analysis
Hyperspectral imagery
Spectral reflectance library--different materials reflect radiation differently
When you georeference your raster data, you define its location using map coordinates and assign the coordinate system of the map frame. Georeferencing raster data allows it to be viewed, queried, and analyzed with your other geographic data. The georeferencing tools on the Georeference tab allows you to georeference any raster dataset.
In general, there are four steps to georeference your data:
Add the raster dataset that you want to align with your projected data.
Use the Georeference tab to create control points, to connect your raster to known positions in the map
Review the control points and the errors
Save the georeferencing result, when you are satisfied with the alignment.
Digital Elevation Model (DEM) is the digital representation of the land surface elevation with respect to any reference datum. DEM is frequently used to refer to any digital representation of a topographic surface. DEM is the simplest form of digital representation of topography. GIS applications depend mainly on DEMs, today.
This is all about remote sensing. Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation, especially the Earth.Remote sensing is the process of detecting and monitoring the physical characteristics of an area by measuring its reflected and emitted radiation at a distance from the targeted area. Special cameras collect remotely sensed imagesof the Earth, which help researchers "sense" things about the Earth.
Remote sensing implies to the collection of data
about an object from a distance. With the use of LiDAR
remote sensing technology, the three dimensional
distribution of plant canopies and vegetation structural
attributes can be accurately estimated. The measure of
difference in reflectance from leaves of plants, due to the
presence of chlorophyll pigments in different ratios, can be
helpful to locate and characterize the plant remote
location through remote sensing technology and
Geographic Information System (GIS). The present study
highlights the importance of remote sensing technology and
GIS in detection of herbs located distantly.
What is Remote Sensing?
Process of Remote Sensing
Electromagnetic Radiations
Electromagnetic Spectrum
Interaction with Atmosphere
Radiations-Target Interactions
Passive Vs Active Sensing
includes several diseases process including various diseases of the heart, stroke and high blood pressure, congestive heart failure and atherosclerosis
) Define Sociology and explain its origin, development, and divisions.
2) Describe the subject matter of Sociology of Education
3) Explain the importance of Sociology to the education system
4) Explain the way in which the education system in Tanzania has been shaped by the ideas of prominent sociologists.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
In this webinar you will learn how your organization can access TechSoup's wide variety of product discount and donation programs. From hardware to software, we'll give you a tour of the tools available to help your nonprofit with productivity, collaboration, financial management, donor tracking, security, and more.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
2. INTRODUCTION
• Remote sensing: is the collection of information
relating to objects without being in physical
contact with the object (Abdurrahman 2010)
• Remote sensing is the process of acquiring data
or information about substances not in direct
contact with the sensor, by gathering its inputs
using electromagnetic radiation or acoustical
waves that are from the target of interest
3. Introduction cont..
• Sensor – is the device that detects and
responds to some type of input from physical
environment, the specific input could be light,
heat, motion, moisture, pressure or any other
environmental phenomena (Channel 1999)
• Resolution is the term used to describe the
number of dots or pixels used to display an
image.
4. Introduction cont..
• High resolution means that more pixels are
used to create the image resulting in cleaner
image.
• Low resolution means that fewer pixels are
used to create the image resulting in less
cleaner image.
• This display is indicated by a number of
combinations such as 800 X 600.
5. TYPES OF RESOLUTION
• Spatial resolution: this is the ability of the
sensor to record distinctively clear image of
smallest object on the earth’s surface.
• It describes the ability of a sensor to identify
the smallest size detail of a pattern on an
image.
7. Spatial cont..
• That is the first image has low spatial
resolution in which smallest object cannot
clearly seen while the second image has a high
spatial resolution in smallest object to be seen
clearly.
8. Spectral resolution
• Spectral resolution is the sensitivity of a
sensor to respond to a specific frequency
range
• The frequency ranges covered often include
not only visible light but also non-visible light
and electromagnetic radiation.
9. Spectral cont..
• High spectral resolution means that the
sensor distinguishes between very narrow
bands of wavelength.
• low spectral resolution means the sensor
records the energy in a wide band of
wavelengths as a single measurement.
11. Spectral cont..
• Color film is individually sensitive to the
reflected energy at the blue, green, and red
wavelengths of the spectrum.
• Color film has higher spectral resolution when
compared to black and white film.(Reddy,
2001)
12. Radiometric Resolution
• Refers to the ability of a sensor to detect
differences in energy magnitude. Sensors with
low radiometric resolution are able to detect
only relatively large differences in the amount
of energy received, sensors with high
radiometric resolution are able to detect
relatively small differences in the amount of
energy received.
13. Radiometric cont..
• Radiometric resolution is the sensitivity of a
sensor system to differentiate signal strength
as weak or strong radiation in micro and
macro radiation in the electromagnetic
spectrum (EMS), it is determined by the
frequency band (Hz).
15. Radiometric cont..
• By comparing a 2-bit image with an 8-bit
image, one can see that there is a large
difference in the level of discernible details.
• The more sensitive a sensor is to the
reflectance of an object as compared to its
surroundings, the smaller an object that can
be detected and identified.
16. Temporal Resolution
• Temporal Resolution is the frequency at which
data is captured for a specific place on the
earth. The more frequently they are captured,
the better or finer is the temporal resolution.
• The ability to collect imagery of the same area
of the Earth's surface at different periods of
time is one of the most important elements for
applying remote sensing data.
17. Temporal cont..
• For example, during the growing season, most
species of vegetation are in a continual state
of change and our ability to monitor those
subtle changes using remote sensing is
dependent on when and how frequently we
collect imagery.
18. Conclusion
• The resolution gives accuracy to the images
and it is important to the image because it
gives well, clear and observable objects on the
image, also higher resolution of the image can
help to analyze and interpret details of the
image for the best information.