Computer Vision Lecture 1: Images and Filtering
17 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a digital image represented as?

  • A 3D array of pixel values
  • A vector of intensity values
  • A matrix of intensity values (correct)
  • A grid of color values

    • What is the range of intensity values in a typical grayscale image?

  • 0 to 100
  • 0 to 255 (correct)
  • 0 to 512
  • 0 to 1024

    • What is the purpose of image filtering in digital camera imaging?

  • To reduce image noise (correct)
  • To compress image size
  • To convert image to grayscale
  • To enhance image resolution

    • What is the process of converting an image into a 2D grid of intensity values called?

    <p>Image representation</p> Signup and view all the answers

    What is the role of the eye in the process of image formation?

    <p>To capture the image</p> Signup and view all the answers

    What is the common practice in digital image representation?

    <p>Using one byte per value</p> Signup and view all the answers

    What is the primary purpose of thresholding in image processing?

    <p>To reduce image complexity and facilitate feature extraction</p> Signup and view all the answers

    What type of thresholding involves a fixed threshold value for the entire image?

    <p>Global thresholding</p> Signup and view all the answers

    What is the outcome of a pixel value being greater than the threshold value in thresholding?

    <p>The pixel value is set to one</p> Signup and view all the answers

    Can thresholding be implemented using a linear filter?

    <p>No, thresholding requires a non-linear filter</p> Signup and view all the answers

    What is the term for the blur in out-of-focus regions of an image?

    <p>Bokeh</p> Signup and view all the answers

    What is a grayscale image represented as in terms of a function?

    <p>A function from R2 to R</p> Signup and view all the answers

    What is the primary goal of applying filters to an image?

    <p>To get useful information from the image</p> Signup and view all the answers

    What is the result of applying a convolution operator to an image?

    <p>A new image with pixel values that are a combination of the original pixel values</p> Signup and view all the answers

    Why is taking multiple images of a still scene and averaging them a good way to reduce noise?

    <p>Because it averages out random fluctuations</p> Signup and view all the answers

    What is image restoration?

    <p>The process of removing noise and blur from an image</p> Signup and view all the answers

    What is the purpose of image filtering?

    <p>To modify the pixels in an image based on a local neighborhood</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser