Image Processing: Histogram Processing Quiz
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Questions and Answers

What does a histogram in digital image processing indicate?

  • The size of the image in pixels
  • The color distribution in the image
  • The resolution of the image
  • The number of times each gray level occurs in the image (correct)

    • What does a concentrated histogram in digital image processing indicate?

  • The histogram covers a broad range of the gray scale with very few vertical lines being much higher than other
  • The histogram is biased and centered toward the high (light) side of the gray scale
  • The histogram covers a wide range of the intensity scale and is distributed uniformly
  • The histogram is biased and centered toward the low (dark) side of the gray scale (correct)

    • What does a high-contrast image histogram indicate?

  • The histogram is biased and centered toward the high (light) side of the gray scale (correct)
  • The histogram covers a broad range of the gray scale with very few vertical lines being much higher than other
  • The histogram covers a wide range of the intensity scale and is distributed uniformly
  • The histogram is biased and centered toward the low (dark) side of the gray scale

    • What does a broad range histogram in digital image processing indicate?

    <p>The histogram covers a wide range of the intensity scale and is distributed uniformly</p> Signup and view all the answers

    What does a narrow histogram in digital image processing indicate?

    <p>The histogram is biased and centered toward the low (dark) side of the gray scale</p> Signup and view all the answers

    Study Notes

    Histogram in Digital Image Processing

    • A histogram visually represents the distribution of pixel intensity values in a digital image, indicating the frequency of each intensity level.
    • Helps in evaluating the dynamic range, tonal values, and overall contrast of an image.

    Concentrated Histogram

    • Indicates that pixel intensity values are clustered around a specific range, often resulting in low contrast.
    • Suggests that the image may appear dull or flat due to a lack of variation in brightness.

    High-Contrast Image Histogram

    • Displays a wide distribution of pixel intensities, indicating significant differences between light and dark areas.
    • Often characterized by peaks spread across the histogram, resulting in an image that appears sharp and dynamic.

    Broad Range Histogram

    • Indicates a wide variation in pixel intensity values across the image.
    • Suggests that the image captures a diverse range of tones, resulting in rich detail and texture.

    Narrow Histogram

    • Represents a limited range of pixel intensity values, often suggesting a lack of detail in the image.
    • Can indicate overexposure or underexposure, leading to loss of tonal information and detail in brighter or darker areas.

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    Quiz Team

    Description

    Test your knowledge of intensity transformations, spatial filtering, and histogram processing in digital image processing. This quiz covers topics such as histogram equalization, histogram matching, and local histogram processing.

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