I need an explanation on what the function of the number "1.428" in the following code, could
you explain it please? I have provided the code below
from PIL import Image
def fix_middle(picture):
# Swapping the red and green components in the middle of the picture
# The middle is defined as a rectangular space
# 100% of the picture height and
# 50% of the picture width centered horizontally.
width, height = picture.size
for x in range(width):
for y in range(height):
if x in range(int(width/4),int(width/4)+int(width/2)) and y in range(height):
r,g,b = picture.getpixel((x,y))
picture.putpixel((x,y),(g,r,b))
return picture
def fix_top_half(picture):
# Changing each pure yellow pixel on the top half of the image to white
# Pure yellow pixels have the red and green components maximized and the blue component
minimized
width, height = picture.size
for x in range(width):
for y in range(height):
if x in range(width) and y in range(int(height/2)):
r,g,b = picture.getpixel((x,y))
if r == 255 and g == 255 and b == 0:
picture.putpixel((x,y),(255,255,255))
return picture
def make_rect_varyh(picture):
# Rectangle upper left corner: (10% of the picture width, 70% of the picture height)
# Rectangle height: 5% of the picture height
# Rectangle width: 80% of the picture width
# Rectangle color varies from black to pure blue as the rectangle is traversed horizontally
from left to right
width, height = picture.size
for x in range(width):
for y in range(height):
if x in range(int(width/10),int(width/10)+int(width/1.25)) and y in
range(int(height/1.428),int(height/1.428)+int(height/20)):
r,g,b = picture.getpixel((x,y))
picture.putpixel((x,y),(0,0,int((x-int(width/10))/(width/1.25)*255)))
return picture
from PIL import Image
def fix_file(file_name):
# Open the file_name indicated to obtain a picture
# Call the helper functions: fox middle (picture) fix top_half (picture) make_rect_varyh
(picture)
# Show only the final picture to verify the changes
# Save the final picture as "final.png"
picture = Image.open("stop_colored.png")
picture = fix_middle(picture)
picture = fix_top_half(picture)
picture = make_rect_varyh(picture)
picture.show()
picture.save("final.png")
fix_file("stop_colored.png").
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I need an explanation on what the function of the number 1.428 in .pdf
1. I need an explanation on what the function of the number "1.428" in the following code, could
you explain it please? I have provided the code below
from PIL import Image
def fix_middle(picture):
# Swapping the red and green components in the middle of the picture
# The middle is defined as a rectangular space
# 100% of the picture height and
# 50% of the picture width centered horizontally.
width, height = picture.size
for x in range(width):
for y in range(height):
if x in range(int(width/4),int(width/4)+int(width/2)) and y in range(height):
r,g,b = picture.getpixel((x,y))
picture.putpixel((x,y),(g,r,b))
return picture
def fix_top_half(picture):
# Changing each pure yellow pixel on the top half of the image to white
# Pure yellow pixels have the red and green components maximized and the blue component
minimized
width, height = picture.size
for x in range(width):
for y in range(height):
if x in range(width) and y in range(int(height/2)):
r,g,b = picture.getpixel((x,y))
if r == 255 and g == 255 and b == 0:
picture.putpixel((x,y),(255,255,255))
return picture
def make_rect_varyh(picture):
# Rectangle upper left corner: (10% of the picture width, 70% of the picture height)
# Rectangle height: 5% of the picture height
# Rectangle width: 80% of the picture width
# Rectangle color varies from black to pure blue as the rectangle is traversed horizontally
from left to right
width, height = picture.size
for x in range(width):
2. for y in range(height):
if x in range(int(width/10),int(width/10)+int(width/1.25)) and y in
range(int(height/1.428),int(height/1.428)+int(height/20)):
r,g,b = picture.getpixel((x,y))
picture.putpixel((x,y),(0,0,int((x-int(width/10))/(width/1.25)*255)))
return picture
from PIL import Image
def fix_file(file_name):
# Open the file_name indicated to obtain a picture
# Call the helper functions: fox middle (picture) fix top_half (picture) make_rect_varyh
(picture)
# Show only the final picture to verify the changes
# Save the final picture as "final.png"
picture = Image.open("stop_colored.png")
picture = fix_middle(picture)
picture = fix_top_half(picture)
picture = make_rect_varyh(picture)
picture.show()
picture.save("final.png")
fix_file("stop_colored.png")
