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Last active October 17, 2022 06:36
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Pillow基礎_07_画像の合成
# coding: utf-8
"""
画像の合成
"""
import numpy as np
from PIL import Image, ImageChops
# 例1
def sample01():
# Image
img_back = Image.open("./images/img_back.png")
img_front_black = Image.open("./images/img_front_black.png")
img_front_alpha = Image.open("./images/img_front_alpha.png")
print("img_back:", img_back.mode) # RGB
print("img_front_black:", img_front_black.mode) # RGB
print("img_front_alpha:", img_front_alpha.mode) # RGBA
# Add
img_add = ImageChops.add(img_back, img_front_black, scale=1.0, offset=0)
img_add.save("img_dst_add.png")
# Color
img_gray = img_back.convert("L") # RGB -> L
img_gray = img_gray.convert("RGB") # L -> RGB
img_gray.save("img_gray.png")
img_red = Image.new("RGB", img_gray.size, color="red")
img_dst_red = ImageChops.add(img_gray, img_red)
img_dst_red.save("img_dst_red.png")
img_green = Image.new("RGB", img_gray.size, color="green")
img_dst_green = ImageChops.add(img_gray, img_green)
img_dst_green.save("img_dst_green.png")
img_blue = Image.new("RGB", img_gray.size, color="blue")
img_dst_blue = ImageChops.add(img_gray, img_blue)
img_dst_blue.save("img_dst_blue.png")
sample01()
# 例2
def sample02():
# Image
img_back = Image.open("./images/img_back.png")
img_front_black = Image.open("./images/img_front_black.png")
img_front_alpha = Image.open("./images/img_front_alpha.png")
# Blend
img_blend_1 = ImageChops.blend(img_back, img_front_black, alpha=0.3)
img_blend_2 = ImageChops.blend(img_back, img_front_black, alpha=0.6)
img_blend_3 = ImageChops.blend(img_back, img_front_black, alpha=0.9)
img_blend_1.save("./img_blend_1.png")
img_blend_2.save("./img_blend_2.png")
img_blend_3.save("./img_blend_3.png")
sample02()
# 例3
def sample03():
# Image
img_back = Image.open("./images/img_back.png")
img_front_black = Image.open("./images/img_front_black.png")
img_front_alpha = Image.open("./images/img_front_alpha.png")
# Diff
img_diff = ImageChops.difference(img_back, img_front_black)
img_diff.save("img_diff.png")
# Sub
img_sub = ImageChops.subtract(img_back, img_front_black)
img_sub.save("img_sub.png")
# Lighter
img_light = ImageChops.lighter(img_back, img_front_black)
img_light.save("img_light.png")
# Multiply
img_multi = ImageChops.multiply(img_back, img_front_black)
img_multi.save("img_multi.png")
# Screen
img_screen = ImageChops.screen(img_back, img_front_black)
img_screen.save("img_screen.png")
# Screen
img_screen = ImageChops.screen(img_back, img_front_black)
img_screen.save("img_screen.png")
# Overlay
img_overlay = ImageChops.overlay(img_back, img_front_black)
img_overlay.save("img_overlay.png")
# Hardlight
img_h_light = ImageChops.hard_light(img_back, img_front_black)
img_h_light.save("img_h_light.png")
# Softlight
img_s_light = ImageChops.soft_light(img_back, img_front_black)
img_s_light.save("img_s_light.png")
# Composite(Alpha)
img_back_rgba = img_back.convert("RGBA") # RGB -> RGBA
img_compo = Image.alpha_composite(img_back_rgba, img_front_alpha)
img_compo.save("img_compo.png")
sample03()
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