Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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#create a duplicate of the image
for y in range (image.getHeight()-1):
for x in range (1, image.getWidth () -1):
#Row major traversal of each pixel
#display in the image
oldPixel=image.getPixel(x,y)
#Get the pixel present at current place
leftPixel=image.getPixel(x-1,y)
#Get left pixel.
bottomPixel=image.getPixel (x, y+1)
#Get bottom pixel
oldLum-average (oldPixel)
#calcule luminance of current pixel
leftLum-average (leftPixel)
#calculate luminance of left pixel
bottomLum=average (bottomPixel)
#calculate luminance of right pixel
if abs (oldLum-leftLum) >threshold or\
abs (oldLum-bottomLum) >threshold:
new.setPixel (x,y, sharpen (old, degree))
return new
#3main function
def main ():
#Input image
image=Image ("testImage.gif")
image.draw ()
#Call the method, edge detection
out=edge_detection (image, 80,10)
out.draw ()
if
main ()
name
main
":
==
expand button
Transcribed Image Text:#create a duplicate of the image for y in range (image.getHeight()-1): for x in range (1, image.getWidth () -1): #Row major traversal of each pixel #display in the image oldPixel=image.getPixel(x,y) #Get the pixel present at current place leftPixel=image.getPixel(x-1,y) #Get left pixel. bottomPixel=image.getPixel (x, y+1) #Get bottom pixel oldLum-average (oldPixel) #calcule luminance of current pixel leftLum-average (leftPixel) #calculate luminance of left pixel bottomLum=average (bottomPixel) #calculate luminance of right pixel if abs (oldLum-leftLum) >threshold or\ abs (oldLum-bottomLum) >threshold: new.setPixel (x,y, sharpen (old, degree)) return new #3main function def main (): #Input image image=Image ("testImage.gif") image.draw () #Call the method, edge detection out=edge_detection (image, 80,10) out.draw () if main () name main ": ==
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