Podcast
Questions and Answers
What is the term used to describe each element in a digitized image array?
What is the term used to describe each element in a digitized image array?
- Pixel (correct)
- Image Element
- Pel Element
- Picture Element
According to the coordinate convention shown in the figure, what is the direction of the M axis?
According to the coordinate convention shown in the figure, what is the direction of the M axis?
- Towards the top
- Out of the page (correct)
- Into the page
- Towards the right
What is the purpose of dividing an image into pixels?
What is the purpose of dividing an image into pixels?
- To enhance the image quality
- To reduce the image size
- To compress the image
- To facilitate digital image processing (correct)
What is the unit of a digitized image represented by the number '1' in the figure?
What is the unit of a digitized image represented by the number '1' in the figure?
What is the term used to describe a single point in a digitized image?
What is the term used to describe a single point in a digitized image?
What do the terms 'image' and 'pixel' refer to in digital context?
What do the terms 'image' and 'pixel' refer to in digital context?
What is the relationship between an image and a pixel?
What is the relationship between an image and a pixel?
What is implied by the term 'digital image'?
What is implied by the term 'digital image'?
What is a pixel in the context of digital imaging?
What is a pixel in the context of digital imaging?
What is the scope of the terms 'image' and 'pixel' in digital context?
What is the scope of the terms 'image' and 'pixel' in digital context?
What is characteristic of Truecolor images?
What is characteristic of Truecolor images?
In Truecolor images, what determines the color of each pixel?
In Truecolor images, what determines the color of each pixel?
How do Truecolor images store color information?
How do Truecolor images store color information?
What is NOT a characteristic of Truecolor images?
What is NOT a characteristic of Truecolor images?
What type of image is depicted in the figure?
What type of image is depicted in the figure?
Where is the color information for each pixel stored in Truecolor images?
Where is the color information for each pixel stored in Truecolor images?
How many bits are used to represent each color component in a truecolor image?
How many bits are used to represent each color component in a truecolor image?
What is the total number of bits used to represent a truecolor image?
What is the total number of bits used to represent a truecolor image?
What is the purpose of breaking down a truecolor image into its color components?
What is the purpose of breaking down a truecolor image into its color components?
Why do graphics file formats store truecolor images as 24-bit images?
Why do graphics file formats store truecolor images as 24-bit images?
What is the size of the cameraman image to be read and displayed using MATLAB code?
What is the size of the cameraman image to be read and displayed using MATLAB code?
What programming language is used to read and display the cameraman image?
What programming language is used to read and display the cameraman image?
What is the purpose of the code that reads and displays the cameraman image?
What is the purpose of the code that reads and displays the cameraman image?
What type of image is the cameraman image?
What type of image is the cameraman image?
What is the purpose of the homework assignment?
What is the purpose of the homework assignment?
Study Notes
Coordinate Conventions
- The coordinate convention is illustrated in the figure, with axes labeled 1, 2, 3, and N, and a point M with a radial distance r.
Images as Matrices
- A digitized image is represented as an array, with each element called an image element, picture element, pixel, or pel.
- The terms "image" and "pixel" are used to denote a digital image and its elements.
- In truecolor images, the color of each pixel is determined by the combination of red, green, and blue intensities stored in each color plane at the pixel's location.
- Truecolor images do not use a colormap.
- Graphics file formats store truecolor images as 24-bit images, where the red, green, and blue components are 8 bits each.
Homework
- Q3: Write a MATLAB code to read and show a 256 x 256 cameraman image.
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Description
This quiz explores the concept of image representation as matrices, including coordinate conventions and pixel values.
