4. Image Analysis

Unsupervised Classification — Quiz

Test your understanding of unsupervised classification with 5 practice questions.

Practice Questions

Question 1

Which of the following is a primary characteristic of the output of an unsupervised classification algorithm before class labeling?

Question 2

In K-means clustering, if the initial centroids are poorly chosen, what is the most likely consequence?

Question 3

What is the main advantage of ISODATA over K-means when the optimal number of clusters is unknown?

Question 4

After an unsupervised classification, what is the primary purpose of 'class labeling'?

Question 5

Consider a remote sensing image with pixel values in two spectral bands. If a pixel has values $(B_1, B_2)$ and a cluster centroid is at $(C_1, C_2)$, which of the following expressions represents the Euclidean distance between the pixel and the centroid?