Python を使用して画像のカラーマッチングを行う方法

pip install opencv-python
pip install numpy

import cv2

def rgb2lab(image):
    lab_image = cv2.cvtColor(image, cv2.COLOR_RGB2Lab)
    return lab_image

import cv2

def rgb2hsv(image):
    hsv_image = cv2.cvtColor(image, cv2.COLOR_RGB2HSV)
    return hsv_image

import cv2

def histogram_matching(source_image, target_image):
    source_hist = cv2.calcHist([source_image], [0, 1, 2], None, [8, 8, 8], [0, 256, 0, 256, 0, 256])
    target_hist = cv2.calcHist([target_image], [0, 1, 2], None, [8, 8, 8], [0, 256, 0, 256, 0, 256])
    source_hist = cv2.normalize(source_hist, source_hist).flatten()
    target_hist = cv2.normalize(target_hist, target_hist).flatten()
    
    mapping = cv2.calcHist([source_hist], [0], None, [256], [0, 256])
    mapping = cv2.normalize(mapping, mapping).flatten()
    
    matched_image = mapping[target_image]
    
    return matched_image

import cv2

def color_transfer(source_image, target_image):
    source_hsv = cv2.cvtColor(source_image, cv2.COLOR_RGB2HSV)
    target_hsv = cv2.cvtColor(target_image, cv2.COLOR_RGB2HSV)
    
    target_hsv[:,:,0] = source_hsv[:,:,0]
    target_hsv[:,:,1] = source_hsv[:,:,1]
    
    matched_image = cv2.cvtColor(target_hsv, cv2.COLOR_HSV2RGB)
    
    return matched_image

import cv2
import numpy as np

def color_matching(source_image, target_image):
    source_lab = rgb2lab(source_image)
    target_lab = rgb2lab(target_image)
    
    matched_image = histogram_matching(source_lab, target_lab)
    
    return matched_image

# 读取源图片和目标图片
source_image = cv2.imread('source.jpg')
target_image = cv2.imread('target.jpg')

# 进行色彩匹配
matched_image = color_matching(source_image, target_image)

# 显示结果图片
cv2.imshow('matched_image', matched_image)
cv2.waitKey(0)
cv2.destroyAllWindows()