imported>Unknown at 05:31, 7 February 2021

2021-02-07T05:31:18Z

New page

== RGB channel만들기 ==
import Image
im = Image.open("lena.jpg")
newR = Image.new("RGB",im.size)
newG = Image.new("RGB",im.size)
newB = Image.new("RGB",im.size)
sizeX, sizeY = im.size
for x in range(sizeX):
for y in range(sizeY):
r,g,b = im.getpixel((x,y))
newR.putpixel((x,y),(r,0,0))
newG.putpixel((x,y),(0,g,0))
newB.putpixel((x,y),(0,0,b))
newR.show()
newG.show()
newB.show()
== RGB 별 Gray화 ==
import Image
im = Image.open("lena.jpg")
newGray = Image.new("P",im.size)
sizeX, sizeY = im.size
for x in range(sizeX):
for y in range(sizeY):
r,g,b = im.getpixel((x,y))
k = (r + g + b) / 3
newGray.putpixel((x,y),k)
newGray.show()
== Whitening ==
import Image
im = Image.open("lena.jpg")
for x in range(50,100):
for y in range(50,100):
r,g,b = im.getpixel((x,y))
im.putpixel((x,y),(r+50,g+50,b+50))
im.show()
== Darkening ==
import Image
im = Image.open("lena.jpg")
for x in range(50,100):
for y in range(50,100):
r,g,b = im.getpixel((x,y))
im.putpixel((x,y),(r-50,g-50,b-50))
im.show()
== alpha ==
import Image
im = Image.open("lena.jpg")

for x in range(50,100):
for y in range(100,150):
r1,g1,b1 = im.getpixel((x,y))
r2,g2,b2 = im.getpixel((x,y-100))
im.putpixel((x,y-100),((r1+r2)/2,(g1+g2)/2,(b1+b2)/2))
im.show()
== 모자이크 ==
import Image
im = Image.open("lena.jpg")

for x in range(0,255,5):
for y in range(0,255,5):
r = g = b = 0
for m in range(x,x+5):
for n in range(y,y+5):
t1,t2,t3 = im.getpixel((m,n))
r += t1
g += t2
b += t3
for m in range(x,x+5):
for n in range(y,y+5):
im.putpixel((m,n),(r/25,g/25,b/25))
im.show()
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캠이랑놀자/보창/숙제1 - Revision history

imported>Unknown at 05:31, 7 February 2021