Image Processing Lecture 4: Gaussian Smoothing and Filtering
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Questions and Answers

What is the purpose of the Median Filter in image processing?

  • To apply Gaussian Smoothing
  • To reduce noise in an image (correct)
  • To detect changes in pixel values
  • To enhance edges in an image

What is the result of applying a Gradient Operator to an image?

  • A blurred version of the image
  • An edge map of the image (correct)
  • A noisy version of the image
  • A binary image with all pixel values set to 0 or 1

What is the advantage of using Separability in Gaussian Smoothing?

  • It is only applicable to 1D filters
  • It increases the accuracy of the filter
  • It is used for Median Filtering
  • It reduces the number of operations required (correct)

What is the function of the Thresholding step in Gradient Operators?

<p>To determine the significance of the gradient (D)</p> Signup and view all the answers

What is the difference between the Roberts and Prewitt Operators?

<p>The Roberts Operator uses a 2x2 kernel, while the Prewitt Operator uses a 3x3 kernel (C)</p> Signup and view all the answers

What is the purpose of applying a Derivative Filter to an image?

<p>To detect changes in pixel values (B)</p> Signup and view all the answers

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