Image Acquisition in Computer Vision
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Questions and Answers

What is the term for the circle formed by light rays from P in the image plane?

  • Spherical aberration
  • Circle of least confusion (correct)
  • Distortion
  • Chromatic aberration

    • What is the aberration caused by the dependency of the index of refraction on wavelength?

  • Vignetting
  • Distortion
  • Spherical aberration
  • Chromatic aberration (correct)

    • What type of distortion is shown in figure (a)?

  • Chromatic aberration
  • Pincushion distortion
  • Barrel distortion (correct)
  • Spherical aberration

    • What is the purpose of multi-lens arrangements in optical systems?

    <p>To minimize aberrations</p> Signup and view all the answers

    What is the term for the blocking of light rays by appertures of different lenses?

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

    What is the field of view of the fish-eye lens shown in figure (c)?

    <p>Almost 180 degrees</p> Signup and view all the answers

    What is the primary objective of Image Acquisition?

    <p>To map a 3-dimensional scene onto a 2-dimensional digital image</p> Signup and view all the answers

    What is the process of converting a continuous signal into a discrete signal called?

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

    Which type of radiation is used in medical X-ray imaging?

    <p>X-ray radiation</p> Signup and view all the answers

    What is the process of projecting radiation from a 3-dimensional scene onto a 2-dimensional image plane called?

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

    What is the process of measuring incident radiation at discrete points on the image plane called?

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

    What is the result of the Digitization process in Image Acquisition?

    <p>A digital signal</p> Signup and view all the answers

    What is the primary factor that determines the spectral composition of illumination?

    <p>The illumination sources and absorption by object surfaces</p> Signup and view all the answers

    What is the result of the varying spectral composition of visible light on the human visual system?

    <p>The sensation of color</p> Signup and view all the answers

    What is the process of projecting an image of a 3-dimensional scene onto a 2-dimensional image plane called?

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

    What will you see when you hold the box with a pinhole in front of you in a dimly lit room, with the pinhole facing a light source?

    <p>An inverted image of the light source</p> Signup and view all the answers

    What is the role of the object surfaces in the spectral composition of illumination?

    <p>They absorb specific parts of the spectrum</p> Signup and view all the answers

    What is the relationship between the spectral composition of light and perceived color?

    <p>There is a complex relationship between the two</p> Signup and view all the answers

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