MCQ_Lecture 3 Image Processing Techniques Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Listen to an AI-generated conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is an advantage of bilinear interpolation over nearest neighbor method?

  • It provides a more spatially accurate result (correct)
  • It produces a stair-step effect in the image
  • It reduces contrast by averaging neighbouring values
  • It is faster in computation

What is a challenge in cloud screening over bright surfaces?

  • Separating clouds from thick aerosol loading
  • Identifying snow and ice
  • Distinguishing clouds from bright sand
  • All of the above (correct)

What spectral band is used in Landsat 8 for cloud detection?

  • Cirrus band 9 (correct)
  • Cirrus band 12
  • Cirrus band 5
  • Cirrus band 1

What is a disadvantage of bilinear interpolation?

<p>It alters original data and reduces contrast (C)</p>
Signup and view all the answers

What affects information retrieval from an image?

<p>All of the above (D)</p>
Signup and view all the answers

What is the result of bilinear interpolation on an image?

<p>It appears smooth and sharpened (A)</p>
Signup and view all the answers

What is the characteristic of the noise that causes images to have a 'salt and pepper' or 'snowy' appearance?

<p>Abrupt changes in pixel values (A)</p>
Signup and view all the answers

How can bad pixels be identified in an image?

<p>By comparing each pixel with its neighbours (C)</p>
Signup and view all the answers

What is the purpose of radiometric correction in remote sensing?

<p>To correct for systematic differences in digital numbers (C)</p>
Signup and view all the answers

What is the typical size of a moving neighbourhood used in noise removal procedures?

<p>3 x 3 or 5 x 5 pixels (C)</p>
Signup and view all the answers

What is the term used to describe the removal of stripe noise from an image?

<p>De-stripping (D)</p>
Signup and view all the answers

What is the method of replacing a noisy pixel value with the average of its neighbouring values?

<p>Neighbourhood averaging (D)</p>
Signup and view all the answers

What is the primary goal of image enhancement in digital image processing?

<p>To make features look more clearly by optimal use of color (B)</p>
Signup and view all the answers

What is the process of digitally identifying and classifying pixels and each object in the image?

<p>Image classification (C)</p>
Signup and view all the answers

What is the primary purpose of image filtering in digital image processing?

<p>To enhance or suppress specific spatial patterns in an image (D)</p>
Signup and view all the answers

What is the primary goal of data merging or data fusion in digital image processing?

<p>To combine and transform the original bands into new images (A)</p>
Signup and view all the answers

What is the characteristic of Tier 1 in Landsat Collections?

<p>Data is provided after 14-26 days delay (B)</p>
Signup and view all the answers

What is the primary use of Real-Time Tier in Landsat Collections?

<p>Monitoring events and natural disasters (A)</p>
Signup and view all the answers

Flashcards are hidden until you start studying

Related Documents

Remote Sensing Image Pre-processing Lecture 3 PDF

More Like This

Use Quizgecko on...
Open
Browser
Browser