opencv图像处理单模板匹配出现错误

今天学习图像处理的时候出现了问题，照着书上的代码打了一遍竟然报错了，思考了好久也不知道怎么处理，希望各位帮帮忙


import cv2
import os
import sys

PIC_PATH = "Screenshots\\"
pic_file=os.listdir(PIC_PATH)
width,height=100,100

same_pic_index=[]
imgs=[]
has_same=set()
count=len(pic_file)

if count==0:
    print("没有图像")
    sys.exit(0)

for file_name in pic_file:
    pic_name=PIC_PATH+file_name
    img=cv2.imread(pic_name)
    img=cv2.resize(img,(width,height))
    imgs.append(img)

for i in range(0,count-1):
    if i in has_same:
        continue
    templ=imgs[i]
    same=[i]
    for j in range(0+i+1,count):
        if j in has_same:
            continue
        pic=imgs[j]
        results=cv2.matchTemplate(pic,templ,cv2.TM_CCORR_NORMED)
        if results>0.9:
            same.append(j)
            has_same.add(i)
            has_same.add(j)
    if len(same)>1:
        same_pic_index.append(same)

for same_list in same_pic_index:
    text="相同的照片:"
    for same in same_list:
        text+=str(pic_file[same])+","
    print(text)

img

报错文字版：

C:\Users\admin\.conda\envs\pytorch2\python.exe E:\pythonProject2\imagetest.py 
Traceback (most recent call last):
  File "E:\pythonProject2\imagetest.py", line 21, in <module>
    img=cv2.resize(img,(width,height))
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
cv2.error: OpenCV(4.7.0) D:\a\opencv-python\opencv-python\opencv\modules\imgproc\src\resize.cpp:4062: error: (-215:Assertion failed) !ssize.empty() in function 'cv::resize'

img


这不是很明确的告诉你了，图片不能为空，所以你图片路径或者图片后缀不对，或者绝对路径带上中文名了，这些都会导致图片读取失败