嗨，我有与对象检测项目有关的错误

Question

我遇到了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()

Answer 1

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

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

here 显示的示例不正确。有关该方法的更多信息，请访问cv2 docs here。

错误本身 (IndexError) 告诉您您正在尝试索引标量。