Naar inhoud springen

Remote Sensing of the Environment: verschil tussen versies

Uit Atlas Examenwiki
← Oudere bewerking
VisueelWikitekst
Lenieh (overleg | bijdragen)
1 bewerking
Examenvragen 2025
Marieke Verley (overleg | bijdragen)
28 bewerkingen
kGeen bewerkingssamenvatting
 
(5 tussenliggende versies door 4 gebruikers niet weergegeven)
Regel 1: Regel 1:
{{Infobox|data2=Smets Benoît|data3=Lectures and practicals|data4=Oral exam and PRAC report|data6=3|header1=Courses and exams|header5=Background|headerstyle=background:lightgrey|label2=Prof|label3=Courses|label4=Examination|label6=Credits|label7=When?|data7=2nd term|label8=ECTS|data8=[https://onderwijsaanbod.kuleuven.be/syllabi/e/G0Z81AE.htm KU Leuven]<br>[https://caliweb.vub.be/?page=course-offer&id=011570&anchor=1&target=pr&year=2324&language=en&output=html VUB]|title=Course Information}}
{{Infobox|data2=Smets Benoît|data3=Lectures and practicals|data4=50% report                                20% practical exam open book                    30% oral exam (no preparation)|data6=3|header1=Courses and exams|header5=Background|headerstyle=background:lightgrey|label2=Prof|label3=Courses|label4=Examination|label6=Credits|label7=When?|data7=2nd term|label8=ECTS|data8=[https://onderwijsaanbod.kuleuven.be/syllabi/e/G0Z81AE.htm KU Leuven]<br>[https://caliweb.vub.be/?page=course-offer&id=011570&anchor=1&target=pr&year=2324&language=en&output=html VUB]|title=Course Information}}


This course is new since 2022. Smets is very friendly during the exam!
This course is new since 2022. Smets is very friendly during the exam!
After the practical, you wait for the oral part, where you draw 3 cards: a card with 3 words where you have to give the definition, a card with a method, and a card with an image.
== 2026 ==
=== June ===
==== 18 & 19 June ====
Practical exam:
*GEE-script of the UN on flood detection using RADAR imagery for two dates. ( / 12)
*# What is the extent of the flood, in m² ? ( / 1)
*# How many people were affected? ( / 1)
*# Why is there an underestimation of the people affected? ( / 2)
*# Which polarization technique is best for floods, VH or VV? ( / 2)
*# Cite at least two limitations to SAR based flood detection. ( / 2)
*# What names of the dimensions of a SAR image? ( / 1)
* NHI-tool for the Erta Ale
*# What are the two peak dates of hotspot detection? ( / 1)
*# How can we compare hotspot pixels of image with different resolutions? Create a formula and explain. ( / 2)
*# What is the peak heat emission and on what date, include the unit. ( / 1)
*# Describe the difference between the measures VRP/FRP and the hotspot pixel count, include the units ( / 4)
* Interferograms
*# What is the difference between the two images' acquisition geometry? ( / 1)
*# What does LOS mean? ( / 1)
* Explain tie points and key points and the images you see (image of photogrammetric precision and georeferencing precision
Oral/theory:
# Definitions:
## ESA
## BTD
## FRP
## SfM
## DIC
## FRP
## SAR
## TROPOMI
## SAR coherence
## Azimuth & Range
## Photogrammetry
## Interior orientation
## Phase unwrapping
## Photogrammetry
## Nadir
## GOES 17
## Sentinel-2 MSI
## Sentinel-5P
## Landsat-8 OLI
## Sentinel-3 SLSTR
# Method:
## Volcanic ash detection
## BTD
## DIC
## SfM - MVS
## Thermal hotspot detection
## SAR based flood mapping
## DInSAR
# Images:
## Ash from mount Etna
## An image of InSAR
## Wien's displacements law
## Image of hotspot detection with bars at 4µm and 12µm
## Image of shortening, overlap, and shadow
## Distortion plot and residual plot
## SO2 trace gas from volcanism in Indonesia
## Image of Notre Dame with key points


== 2025 ==
== 2025 ==


=== June ===
=== June ===
==== 18/06/2025 ====
Practical exam:
# GEE-script of the UN on flood detection using RADAR imagery for two dates. ( / 12)
## What is the extent of the flood, in m² ? ( / 1)
## How many people were affected? ( / 1)
## Why is there an underestimation of the people affected? ( / 2)
## Which polarization technique is best for floods, VH or VV? ( / 2)
## Cite at least two limitations to SAR based flood detection. ( / 2)
## What names of the dimensions of a SAR image? ( / 1)
# NHI-tool for the Erta Ale
## What are the two peak dates of hotspot detection? ( / 1)
## How can we compare hotspot pixels of image with different resolutions? Create a formula and explain. ( / 2)
## What is the peak heat emission and on what date, include the unit. ( / 1)
## Describe the difference between the measures VRP/FRP and the hotspot pixel count, include the units ( / 4)
# Interferograms
## What is the difference between the two images' acquisition geometry? ( / 1)
## What does LOS mean? ( / 1)
## Why are the fringes in the right image inverted in comparison to the one on the left? ( / 2)
## Why are there areas with no fringes or color? ( / 2)
Oral/Theory:
# Definitions (you needed to explain three random ones)
## Nadir
## SAR
## Photogrammetry
## BTD
## Sentinel1
## Azimuth & range
## ESA
## GOES17
## Sentinel3
## Phase unwrapping
## SfM
## Sentinel2-MSI
## Sentinel3 SLSTR
## SAR Coherence
## Sentinel5P TROPOMI
# Methods
## SAR - floods
## BTD
## DIC
## Hotspot detection
## SfM/MVS
# Image
## Volcanic ash clouds
## Notre Dame tie points
## Lava flow & DIC
## Landslides & DIC
## Measured, nodelled and residual ground deformation
## dInSAR


==== 10/06/2025 ====
==== 10/06/2025 ====
Regel 17: Regel 137:
# NHI-tool
# NHI-tool
## What are the two peak dates of hotspot detection?
## What are the two peak dates of hotspot detection?
## How can we compare hotspot pixels of image with different resolutions?  
## How can we compare hotspot pixels of image with different resolutions?
## What is the peak heat emission and on what date, include the unit
## What is the peak heat emission and on what date, include the unit
## Describe the difference between VRP/FRP and the hotspot pixel  
## Describe the difference between VRP/FRP and the hotspot pixel
# Interferograms
# Interferograms
## What is the difference between the two images?
## What is the difference between the two images?
Regel 31: Regel 151:
# SAR
# SAR
# Sentinel-3 (SLSTR)
# Sentinel-3 (SLSTR)
# DIC
# DIC
# SAR coherence
# SAR coherence
# Sentinel-5 (TROPOMI)
# Sentinel-5 (TROPOMI)
# BTD
# Photogrammetry
# Sentinel-1


Methods:
Methods:
Regel 40: Regel 162:
# SfM-VSM photogrammetry
# SfM-VSM photogrammetry
# Thermal hotspot detection
# Thermal hotspot detection
# Digital Image Correlation


Images:
Images:
Regel 46: Regel 169:
# Tie points/key points (Notre Dame image)
# Tie points/key points (Notre Dame image)
# Foreshortening/shadow/overlap
# Foreshortening/shadow/overlap
# Plot with B4 and B12 marked. Used to calculate hotspots. Wiens displacement law


== 2023 ==
== 2023 ==

Huidige versie van 22 jun 2026 12:27

Luafout: kan proces niet aanmaken: proc_open(/dev/null): Failed to open stream: Operation not permitted

This course is new since 2022. Smets is very friendly during the exam!

After the practical, you wait for the oral part, where you draw 3 cards: a card with 3 words where you have to give the definition, a card with a method, and a card with an image.

2026

June

18 & 19 June

Practical exam:

  • GEE-script of the UN on flood detection using RADAR imagery for two dates. ( / 12)
    1. What is the extent of the flood, in m² ? ( / 1)
    2. How many people were affected? ( / 1)
    3. Why is there an underestimation of the people affected? ( / 2)
    4. Which polarization technique is best for floods, VH or VV? ( / 2)
    5. Cite at least two limitations to SAR based flood detection. ( / 2)
    6. What names of the dimensions of a SAR image? ( / 1)
  • NHI-tool for the Erta Ale
    1. What are the two peak dates of hotspot detection? ( / 1)
    2. How can we compare hotspot pixels of image with different resolutions? Create a formula and explain. ( / 2)
    3. What is the peak heat emission and on what date, include the unit. ( / 1)
    4. Describe the difference between the measures VRP/FRP and the hotspot pixel count, include the units ( / 4)
  • Interferograms
    1. What is the difference between the two images' acquisition geometry? ( / 1)
    2. What does LOS mean? ( / 1)
  • Explain tie points and key points and the images you see (image of photogrammetric precision and georeferencing precision


Oral/theory:

  1. Definitions:
    1. ESA
    2. BTD
    3. FRP
    4. SfM
    5. DIC
    6. FRP
    7. SAR
    8. TROPOMI
    9. SAR coherence
    10. Azimuth & Range
    11. Photogrammetry
    12. Interior orientation
    13. Phase unwrapping
    14. Photogrammetry
    15. Nadir
    16. GOES 17
    17. Sentinel-2 MSI
    18. Sentinel-5P
    19. Landsat-8 OLI
    20. Sentinel-3 SLSTR
  2. Method:
    1. Volcanic ash detection
    2. BTD
    3. DIC
    4. SfM - MVS
    5. Thermal hotspot detection
    6. SAR based flood mapping
    7. DInSAR
  3. Images:
    1. Ash from mount Etna
    2. An image of InSAR
    3. Wien's displacements law
    4. Image of hotspot detection with bars at 4µm and 12µm
    5. Image of shortening, overlap, and shadow
    6. Distortion plot and residual plot
    7. SO2 trace gas from volcanism in Indonesia
    8. Image of Notre Dame with key points

2025

June

18/06/2025

Practical exam:

  1. GEE-script of the UN on flood detection using RADAR imagery for two dates. ( / 12)
    1. What is the extent of the flood, in m² ? ( / 1)
    2. How many people were affected? ( / 1)
    3. Why is there an underestimation of the people affected? ( / 2)
    4. Which polarization technique is best for floods, VH or VV? ( / 2)
    5. Cite at least two limitations to SAR based flood detection. ( / 2)
    6. What names of the dimensions of a SAR image? ( / 1)
  2. NHI-tool for the Erta Ale
    1. What are the two peak dates of hotspot detection? ( / 1)
    2. How can we compare hotspot pixels of image with different resolutions? Create a formula and explain. ( / 2)
    3. What is the peak heat emission and on what date, include the unit. ( / 1)
    4. Describe the difference between the measures VRP/FRP and the hotspot pixel count, include the units ( / 4)
  3. Interferograms
    1. What is the difference between the two images' acquisition geometry? ( / 1)
    2. What does LOS mean? ( / 1)
    3. Why are the fringes in the right image inverted in comparison to the one on the left? ( / 2)
    4. Why are there areas with no fringes or color? ( / 2)

Oral/Theory:

  1. Definitions (you needed to explain three random ones)
    1. Nadir
    2. SAR
    3. Photogrammetry
    4. BTD
    5. Sentinel1
    6. Azimuth & range
    7. ESA
    8. GOES17
    9. Sentinel3
    10. Phase unwrapping
    11. SfM
    12. Sentinel2-MSI
    13. Sentinel3 SLSTR
    14. SAR Coherence
    15. Sentinel5P TROPOMI
  2. Methods
    1. SAR - floods
    2. BTD
    3. DIC
    4. Hotspot detection
    5. SfM/MVS
  3. Image
    1. Volcanic ash clouds
    2. Notre Dame tie points
    3. Lava flow & DIC
    4. Landslides & DIC
    5. Measured, nodelled and residual ground deformation
    6. dInSAR

10/06/2025

Practical exam:

  1. GEE-script of the UN on flood detection using RADAR imagery.
    1. What is the extent of the flood? How many people were affected? (These variables are included in the script) Why is there an underestimation of the people affected?
    2. Which polarization technique is best for floods (VH or HH)?
    3. What are the dimensions of a SAR image?
    4. What are disadvantages of flood detection using RADAR?
  2. NHI-tool
    1. What are the two peak dates of hotspot detection?
    2. How can we compare hotspot pixels of image with different resolutions?
    3. What is the peak heat emission and on what date, include the unit
    4. Describe the difference between VRP/FRP and the hotspot pixel
  3. Interferograms
    1. What is the difference between the two images?
    2. What does LOS mean
    3. Why are the fringes in the right image inverted in comparison to the one on the left?
    4. Why are there areas with no fringes or color?

Definitions:

  1. Nadir
  2. SAR
  3. Sentinel-3 (SLSTR)
  4. DIC
  5. SAR coherence
  6. Sentinel-5 (TROPOMI)
  7. BTD
  8. Photogrammetry
  9. Sentinel-1

Methods:

  1. SfM-VSM photogrammetry
  2. Thermal hotspot detection
  3. Digital Image Correlation

Images:

  1. DIC of a lava flow
  2. Tie points/key points (Notre Dame image)
  3. Foreshortening/shadow/overlap
  4. Plot with B4 and B12 marked. Used to calculate hotspots. Wiens displacement law

2023

June

20/06/2023

Definitions (3 pp):

  1. SAR Coherence
  2. DIC
  3. Sentinel-5P (Tropomi)
  4. Interior orientation
  5. FRP
  6. Landat 8 (OLI)
  7. Nadir
  8. SAR
  9. Sentinel-2 (SLSTR)
  10. BTD


Explain image (1pp):

  • Image of passive and active sensor + atmospheric distrubances
  • Image of corner reflextion
  • Image of  distortion and residual map
  • Image of clouds and ash (BTD)


Explain Method (1pp):

  • SAR Interferometry
  • Thermal hotspot detection
  • InSAR

2022

You have to explain 3 definitions, one image and one method per student by drawing cards. The examples below were all asked during the oral exam:

Definitions (per 3):

  1. Azimuth and range direction
  2. ESA
  3. GOES-17
  1. BTD
  2. Photogrammetry
  3. Sentinel-1
  1. Nadir
  2. SAR
  3. Sentinel3-SLSTR
  1. Interferrometric phase unwrapping
  2. SfM
  3. Sentinel-2


Explain image:

  • Image of DEM and dense point cloud of volcano
  • Image of atmospheric disturbance
  • Image of digital image correlation (+can you see vertical displacement? No)
  • Image of earth radiation budget
  • Image of Notre dame and lines (image matching)


Explain method:

  • Hotspot detection (Wien's law and NTI)
  • SfM and MVS (+ difference tie point and point in sparse point cloud)
  • Volcanic ash detection
  • SAR inferrometry
Overgenomen van "http://wiki.atlasleuven.be/index.php?title=Remote_Sensing_of_the_Environment&oldid=950"