图像覆盖堆叠

import os
import time
from os import listdir
from PIL import Image
from loguru import logger
from PIL import Image
def image_synthesis(mother_img,son_img,save_img,size_data,coefficient=2.5,coordinate=None):
    M_Img=Image.open(mother_img)
    S_Img=Image.open(son_img)
    M_Img=M_Img.convert("RGBA")
    M_Img_w,M_Img_h=M_Img.size
    logger.info(f"母图尺寸：{M_Img.size}")
    S_Img_w,S_Img_h=S_Img.size
    logger.info(f"子图尺寸：{S_Img.size}")
    son_resize_h=size_data/coefficient
    factor=son_resize_h/S_Img_h if son_resize_h>S_Img_h else S_Img_h/son_resize_h#子图缩小的倍数1代表不变，2就代表原来的一半
    logger.info(f"子图重置比例: {factor}")
    size_w=int(S_Img_w/factor)
    size_h=int(S_Img_h/factor)
    #防止子图尺寸大于母图
    if S_Img_w>size_w:
        logger.info(f"防止子图尺寸大于母图")
        S_Img_w=size_w
    if S_Img_h>size_h:
        logger.info(f"防止子图尺寸大于母图")
        S_Img_h=size_h
    #重新设置子图的尺寸
    icon=S_Img.resize((S_Img_w,S_Img_h),Image.ANTIALIAS)
    logger.info(f"重置后子图尺寸：{(S_Img_w,S_Img_h)}") 
    try:
        if not coordinate or coordinate=="":
            w=int((M_Img_w-S_Img_w)/2)
            h=int((M_Img_h-S_Img_h))
            coordinate=(w,h)
            #粘贴子图到母图的指定坐标（当前水平居中垂直靠下）
            M_Img.paste(icon,coordinate,mask=None)
        else:
            logger.info("已经指定坐标")
            #粘贴子图到母图的指定坐标（指定坐标）
            M_Img.paste(icon,coordinate,mask=None)
    except:
        logger.info("坐标指定出错 ")
    M_Img.save(save_img)
    return save_img
def image_stitching(origin_img_path, result_img_path, output_img_path, size_data):
    origin_data=Image.open(origin_img_path)
    result_data=Image.open(result_img_path)
    M_Img_w, M_Img_h=origin_data.size
    logger.info(f"待拼接图片的原尺寸: {(M_Img_w,M_Img_h)}")
    factor=M_Img_h/size_data if size_data>M_Img_h else size_data/M_Img_h#子图缩小的倍数1代表不变，2就代表原来的一半
    size_w=int(M_Img_w/factor)
    logger.info(f"待拼接图片重置尺寸: {(size_w,size_data)}")
    origin_img=origin_data.resize((size_w,size_data),Image.BILINEAR)
    result_img=result_data.resize((size_w,size_data),Image.BILINEAR)
    image_list=[origin_img,result_img]
    #单幅图像尺寸
    width,height=image_list[0].size
    logger.info(f"--- width={width},heigh={height}")
    #创建空白长图
    result=Image.new(image_list[0].mode,(width*len(image_list),height))
    #拼接图片
    for i, im in enumerate(image_list):
        result.paste(im,box=(i*width,0))
    result.save(output_img_path)
    return stitching_img_path
if __name__=='__main__':
    root_path='C:/Users/xpp/Desktop/Lena'
    size_data=1280#重制尺寸值
    origin_img_path=os.path.join(root_path,'1.png')
    result_img_path=os.path.join(root_path,'2.png')
    face_img_path=os.path.join(root_path,'3.png')
    stitching_img_path=os.path.join(root_path,'4.png')
    #两图左右拼接
    last_img_path=image_stitching(origin_img_path,result_img_path,stitching_img_path,size_data)
    logger.info(f"左右拼接完成 ---")
    #覆盖小图片到拼接图居中靠下
    synthesis_img_path=os.path.join(root_path,'synthesis_.png')
    res=image_synthesis(last_img_path,face_img_path,synthesis_img_path,size_data)
    logger.info(f"--- end --- res = {res}")