Remote Sensing and GIS for Damage Assessment

What do space-borne instruments measure?

The atmosphere of the Earth
The motion of satellites in space
Properties of the Earth’s surface
Electromagnetic waves emitted, reflected or scattered by the Earth’s surface (correct)

What is the primary focus of the lecture 'Remote Sensing Image Pre-processing'?

Radiometric Pre-processing
Geometric Pre-processing
Processes of Image Pre-processing (correct)
Sentinel-2 Image Processing

What is the primary concern when collecting and exploiting remote sensing data?

Availability of existing products
Scale issue of spatial and temporal resolutions
Image processing methods and techniques
Data availability and accessibility (correct)

What is the title of the handbook that provides guidelines for MODIS Surface Reflectance?

MODIS Surface Reflectance User’s Guide (C) Signup and view all the answers

What is the title of the handbook that provides guidelines for Sentinel-2?

Sentinel-2 User Handbook (A) Signup and view all the answers

What is the title of the handbook that provides guidelines for Landsat 8?

Landsat 8 Data Users Handbook (D) Signup and view all the answers

What is the formula for calculating NDVI in Landsat 8/9?

(Band 5 – Band 4) / (Band 5 + Band 4) (D) Signup and view all the answers

What is the topic that will be covered in Lecture 5?

Remote Sensing Image Interpretation (D) Signup and view all the answers

What is the topic of the homework assigned in Lecture 4?

Histogram equalization and matching (A) Signup and view all the answers

What is the focus of the kernel explanation in the lecture notes?

Low pass filter and high pass filter (D) Signup and view all the answers

What is the primary factor that determines the revisit time of a remote sensing satellite?

The satellite's orbital period (D) Signup and view all the answers

What is the term used to describe the path on the Earth's surface that is imaged by a remote sensing satellite?

Ground track (B) Signup and view all the answers

What is the term used to describe the time it takes for a remote sensing satellite to repeat its imaging cycle?

Repeat cycle (D) Signup and view all the answers

What is the term used to describe the angle of view of a remote sensing satellite's sensor?

Field of view (A) Signup and view all the answers

What is the term used to describe the time it takes for a remote sensing satellite to complete one orbit around the Earth?

Orbital period (A) Signup and view all the answers

What type of filters emphasize low-frequency changes in brightness and de-emphasize high-frequency local detail?

Low pass filters (D) Signup and view all the answers

What is the purpose of a median filter in image processing?

Noise removal (B) Signup and view all the answers

What type of filters are used to emphasize high-frequency components of images and de-emphasize more general, low-frequency detail?

High pass filters (B) Signup and view all the answers

What is the result of applying a smoothing filter to an image?

Loss of high-frequency detail (D) Signup and view all the answers

What is the purpose of edge detection filters in image processing?

Edge enhancement (B) Signup and view all the answers

What is the operation of applying a spatial filter to an image called?

Convolution (C) Signup and view all the answers

What is the kernel in image processing?

A moving window used for convolution (A) Signup and view all the answers

What is the shape of the kernel in image processing?

Square (A) Signup and view all the answers

What is the purpose of convolution in image processing?

Image filtering (A) Signup and view all the answers

What are the three stages involved in the convolution operation?

Input image, kernel, output image (B) Signup and view all the answers

What is the primary application of Land surface temperature reconstruction in remote sensing?

Urban heat island monitoring (A) Signup and view all the answers

Which task involves the use of the CCDC method and Landsat data?

Land use/cover change detection (A) Signup and view all the answers

What is the focus of the task involving the DOTA dataset?

Object detection (D) Signup and view all the answers

What is the application of remote sensing in Earth surface monitoring?

All of the above (D) Signup and view all the answers

What is the focus of the task involving the AID dataset?

Scene classification (D) Signup and view all the answers

What is the primary objective of image classification in Earth Observation?

To categorize all pixels using numerical, spectral patterns (D) Signup and view all the answers

What is the key distinction between Land Use and Land Cover classifications?

Land use refers to human activities, while land cover refers to material present on the landscape (A) Signup and view all the answers

What is the primary advantage of Machine Learning in remote sensing?

It automates the detection of patterns in large datasets (A) Signup and view all the answers

What is the key characteristic of supervised learning in Machine Learning?

It requires labeled training data to learn patterns (B) Signup and view all the answers

What is the primary focus of image classification in Remote Sensing?

To automatically categorize all pixels using numerical, spectral patterns (D) Signup and view all the answers

What is the main drawback of the bilinear method in image processing?

It reduces contrast by averaging neighboring values together. (B) Signup and view all the answers

What is the primary issue with cloud screening in remote sensing?

Clouds affect the retrieval of real reflectance from the ground. (C) Signup and view all the answers

What is the advantage of bilinear method over nearest neighbor?

It reduces the stair-step effect and produces a smooth image. (A) Signup and view all the answers

Why are clouds difficult to distinguish from aerosols?

Because they have similar spectral reflectance. (C) Signup and view all the answers

What is the purpose of cloud screening in remote sensing?

To identify and remove clouds from the image. (D) Signup and view all the answers