Digital Image Representation and Processing
23 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 the primary difference between bitmap and vector image representations?

  • Vector images are better for displaying high-quality images
  • Bitmap images use more memory than vector images
  • Vector images use a series of drawing commands to represent an image (correct)
  • Bitmap images are more suitable for geometric manipulations

What are the advantages of bitmap graphics?

  • Quality and display speed (correct)
  • Allow geometric manipulations without introducing artifacts
  • Require less memory and allow resizing
  • Have smaller memory storage requirements

What is a common limitation of digital image representation?

  • No memory storage requirements
  • Infinite resolution
  • Perfect representation of an image
  • Artifacts due to finite resolution and color mapping (correct)

What is a disadvantage of bitmap graphics?

<p>Have larger memory storage requirements (A)</p> Signup and view all the answers

What is the purpose of image processing operations?

<p>To affect pixel values (A)</p> Signup and view all the answers

What are the two main ways of encoding the contents of a 2D image in digital format?

<p>Bitmap and vector image (C)</p> Signup and view all the answers

What is a key factor in selecting an adequate representation of an image?

<p>All of the above (D)</p> Signup and view all the answers

What does a 0 usually represent in a binary image?

<p>Black (C)</p> Signup and view all the answers

What type of images are binary images usually suitable for?

<p>Images containing simple graphics, text, or line art (A)</p> Signup and view all the answers

How many bits are usually used to represent each pixel in a gray-level image?

<p>8 bits (B)</p> Signup and view all the answers

What is the minimum number of gray levels required to meet the human visual system requirements?

<p>64 (A)</p> Signup and view all the answers

What makes the representation of color images more complex?

<p>The varied and complex nature of color representation (D)</p> Signup and view all the answers

What is the primary function of a color map in an image?

<p>To store the color palette of the image (C)</p> Signup and view all the answers

What type of compression is suitable for general purpose photographic images?

<p>Lossy compression (C)</p> Signup and view all the answers

What type of images is lossless compression recommended for?

<p>Medical images and space images (B)</p> Signup and view all the answers

What is the purpose of compression in image file formats?

<p>To reduce the storage space and transmission time (C)</p> Signup and view all the answers

What type of compression results in a tolerable degree of deterioration in the visual quality of the image?

<p>Lossy compression (C)</p> Signup and view all the answers

What is the typical number of bits used to represent each pixel in an RGB color image?

<p>24 (C)</p> Signup and view all the answers

What is the maximum number of color combinations possible in a 24-bit color representation?

<p>16 million (B)</p> Signup and view all the answers

What is the purpose of the alpha channel in a 32-bit color representation?

<p>To provide a measure of transparency for each pixel (D)</p> Signup and view all the answers

What is the main advantage of using an indexed representation of color images?

<p>It provides better backward compatibility with older hardware (D)</p> Signup and view all the answers

How are color images represented in an indexed representation?

<p>Using a 2D array containing indices to a color palette (B)</p> Signup and view all the answers

What is the typical maximum size of a color palette in an indexed representation?

<p>256 colors (C)</p> Signup and view all the answers

More Like This

Image Basics: What is a Pixel?
25 questions
Basic Digital Imaging Concepts
12 questions

Basic Digital Imaging Concepts

CourageousRetinalite508 avatar
CourageousRetinalite508
Computer Graphics Module 20-21
22 questions
Use Quizgecko on...
Browser
Browser