Histogram Equalization and CDF/PDF Quiz
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Questions and Answers

Which of the following statements about Histogram Equalization is true?

  • It decreases the dynamic range of the gray-level in a low-contrast image
  • It approximates the PDF of an image by using its histogram (correct)
  • It is only applicable to high-contrast images
  • It is achieved by having a transformation function that is the Probability Density Function (PDF) of a given image

    • What is the role of the transformation function in Histogram Equalization?

  • To approximate the Probability Density Function (PDF) of an image
  • To decrease the dynamic range of the gray-level in a high-contrast image
  • To remove the gray-levels from an image
  • To increase the dynamic range of the gray-level in a low-contrast image (correct)

    • What is the relationship between the histogram and PDF of an image in Histogram Equalization?

  • The histogram is the transformation function of the PDF
  • The PDF is the approximation of the histogram
  • The PDF is the transformation function of the histogram
  • The histogram is the approximation of the PDF (correct)

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