您好，我有与对象检测项目相关的错误

我有与简单对象检测相关的错误。

output_layers = [layer_names[i[0] - 1] for i in net.getUnconnectedOutLayers()]
IndexError：标量变量的索引无效。

import cv2.cv2 as cv
import numpy as np

# Load Yolo

net = cv.dnn.readNet('yolov3.weights','yolov3.cfg')
classes = []
with open ("coco.names","r") as f:
 classes = [line.strip() for line in f.readlines()]

layer_names = net.getLayerNames()
otputlayers = [layer_names[i[0] - 1] for i in net.getUnconnectedOutLayers()]

 #Loading image

 img = cv.imread("room_ser.jpg")

cv.imshow("Image",img)
cv.waitKey(0)
cv.destroyAllWindows()

getUnconnectedOutLayers()返回一个整数，而不是一个可迭代对象。相反，使用

outputlayers = [layer_names[i-1] for i in net.getUnconnectedOutLayers()]

所示示例here https://codesuche.com/python-examples/cv2.dnn.readNet/是不正确的。有关该方法的更多信息可以在cv2 文档在这里 https://docs.opencv.org/4.5.3/db/d30/classcv_1_1dnn_1_1Net.html#ae62a73984f62c49fd3e8e689405b056a.

错误本身（IndexError) 告诉您您正在尝试对标量的内容建立索引。