MCQ_Lecture 3 Image Processing Techniques Quiz

Play an AI-generated podcast conversation about this lesson

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?

It alters original data and reduces contrast Signup and view all the answers

What affects information retrieval from an image?

All of the above Signup and view all the answers

What is the result of bilinear interpolation on an image?

It appears smooth and sharpened 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?

Abrupt changes in pixel values Signup and view all the answers

How can bad pixels be identified in an image?

By comparing each pixel with its neighbours Signup and view all the answers

What is the purpose of radiometric correction in remote sensing?

To correct for systematic differences in digital numbers Signup and view all the answers

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

3 x 3 or 5 x 5 pixels Signup and view all the answers

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

De-stripping Signup and view all the answers

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

Neighbourhood averaging Signup and view all the answers

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

To make features look more clearly by optimal use of color Signup and view all the answers

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

Image classification Signup and view all the answers

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

To enhance or suppress specific spatial patterns in an image Signup and view all the answers

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

To combine and transform the original bands into new images Signup and view all the answers

What is the characteristic of Tier 1 in Landsat Collections?

Data is provided after 14-26 days delay Signup and view all the answers

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

Monitoring events and natural disasters Signup and view all the answers