MATLAB: A Practical Introduction to Programming and Problem Solving

by Stormy Attaway
Edition: Fourth Edition
ISBN13:
ISBN10:
459

Matlab

Title
Chapter: 13 / Q: 2.13 Write a script that will create the image seen in the Figure below using a colormap
Chapter: 13 / Q: 3.13 Write a function numimage that will receive two input arguments: a colormap matrix, and an integer “n”; the function will create an image that shows n “rings” of color, using the first n colors from the colormap. For example, if the function is called as follows:
Chapter: 13 / Q: 4.13 Write a script that would produce the following 50 x 50 “image” using the RGB, or true color method (NOT the colormap method)
Chapter: 13 / Q: 5.13 A script rancolors displays random colors in the Figure Window as shown in the Figure below. It starts with a variable nColors which is the number of random colors to display (e.g., below this is 10)
Chapter: 13 / Q: 6.13 Write a script that will create a colormap that just has two colors: white and black. The script will then create a 50x50 image matrix in which each element is randomly either w
Chapter: 13 / Q: 7.13 Write a script that will show shades of green and blue. First, create a colormap that has 30 colors
Chapter: 13 / Q: 8.13 A part of an image is represented by an n x n matrix. After performing data compression and then data reconstruction techniques, the resulting matrix has values that are close to but not exactly equal to the original matrix
Chapter: 13 / Q: 9.13 It is sometimes difficult for the human eye to perceive the brightness of an object correctly. For example, in the Figure below, the middle of both images is the same color, and yet, because of the surrounding colors, the one on the left looks lighter than the one on the right
Chapter: 13 / Q: 10.13 Put a JPEG file in your Current Folder and use imread to load it into a matrix. Calculate and print the mean separately of the red, green, and blue components in the matrix
Chapter: 13 / Q: 11.13 Some image acquisition systems are not very accurate, and the result is noisy images. To see this effect, put a JPEG file in your Current Folder and use imread to load it

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