Image tone python

 

1.      Write a program that has three functions: sepia(), remove_all_red(), and gray_scale().

 

Sepia Tone images are those brownish colored images that may remind you of times past. The formula for creating a sepia tone is as follows:

 

newR = (R × 0.393 + G × 0.769 + B × 0.189)

newG = (R × 0.349 + G × 0.686 + B × 0.168)

newB = (R × 0.272 + G × 0.534 + B × 0.131)

 

Red removal from an image:

 

Simply set the R component to 0.

 

Gray scale conversion:

 

                        newR = (R × 0.289 + G × 0.587 + B × 0.114)

newG = (R × 0.289 + G × 0.587 + B × 0.114)

newB = (R × 0.289 + G × 0.587 + B × 0.114)

 

 

 

Hint: Remember that rgb values must be integers between 0 and 255.

You can get each pixel by using p = img.getPixel(col, row)

Components of each pixel can be retrieved by p.getRed(), p.getGreen(), p.getBlue()

 

#Starter code
import image

img=image.Image("sample.jpg")
newimg=image.EmptyImage(img.getWidth(),img.getHeight())
win =image.ImageWin()

img.draw(win)
win.exitonclick()

 
 

 

 
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