Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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pic for inout and output

 

import image

def modify(pic, m):
'''Multiply each pixel by m to darken or brighten an image'''
pass #You can leave this or remove it
#Your code here to change the brightness of the image

def main():
'''Controls the program'''
fname = "https://runestone.academy/runestone/books/published/StudentCSP/_static/beach.jpg"
img = image.Image(fname)
width = img.getWidth()
height = img.getHeight()
win = image.ImageWin(width, height)
modify(img, 0.5)
img.draw(win)

main() #Run the program

4. The following program loads and displays an image. Complete the modify function to change the
brightness of the image. The parameter m is a multiplication factor. modify will will multiply each
pixel by m - that means you need to multiply the red, green, and blue channels by m, create a new
pixel with new red, green, and blue values, and replace the old pixel with the new pixel. Be sure
none of the red, green, and blue values exceed 255 (if a value is greater than 255, set it to 255).
Your program should work for images of any size. A good example is the sepia tone exercise. Do
not change the main function, except to try different values for the multiplication factor.
Save & Run
Original - 1 of 4
1 import image
2
3 def modify (pic, m) :
4
'''Multiply each pixel by m to darken or brighten an image'''
5
pass
#You can leave this or remove it
6
#Your code here to change the brightness of the image
7
8 def main () :
'"Controls the program'''
10
fname = "https://runestone.academy/runestone/books/published/Stud
11
img = image. Image (fname)
12
width = img.getWidth ()
13
height
img.getHeight ()
%3D
win = image. ImageWin (width, height)
modify (img, O.5)
14
15
16
img.draw (win)
17
18 main ()
#Run the program
19
expand button
Transcribed Image Text:4. The following program loads and displays an image. Complete the modify function to change the brightness of the image. The parameter m is a multiplication factor. modify will will multiply each pixel by m - that means you need to multiply the red, green, and blue channels by m, create a new pixel with new red, green, and blue values, and replace the old pixel with the new pixel. Be sure none of the red, green, and blue values exceed 255 (if a value is greater than 255, set it to 255). Your program should work for images of any size. A good example is the sepia tone exercise. Do not change the main function, except to try different values for the multiplication factor. Save & Run Original - 1 of 4 1 import image 2 3 def modify (pic, m) : 4 '''Multiply each pixel by m to darken or brighten an image''' 5 pass #You can leave this or remove it 6 #Your code here to change the brightness of the image 7 8 def main () : '"Controls the program''' 10 fname = "https://runestone.academy/runestone/books/published/Stud 11 img = image. Image (fname) 12 width = img.getWidth () 13 height img.getHeight () %3D win = image. ImageWin (width, height) modify (img, O.5) 14 15 16 img.draw (win) 17 18 main () #Run the program 19
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