人像变换双十二促销活动

import cv2
import numpy as np

def change_background(image_path, new_background_path):
    # 读取原始图像和新背景
    original_image = cv2.imread(image_path)
    new_background = cv2.imread(new_background_path)

    # 分离前景和背景（这里简化为颜色阈值分割）
    hsv = cv2.cvtColor(original_image, cv2.COLOR_BGR2HSV)
    lower_green = np.array([40, 40, 40])
    upper_green = np.array([80, 255, 255])
    mask = cv2.inRange(hsv, lower_green, upper_green)

    # 应用掩码
    foreground = cv2.bitwise_and(original_image, original_image, mask=mask)
    background = cv2.bitwise_and(new_background, new_background, mask=cv2.bitwise_not(mask))

    # 合并前景和新背景
    result = cv2.add(foreground, background)
    return result

# 使用示例
output_image = change_background('person.jpg', 'new_background.jpg')
cv2.imwrite('output.jpg', output_image)