python - TypeError:不能理解的数据类型opencv python

Question

多数民众赞成在我的python3 opencv3代码我运行此代码时收到此错误，但我还没有完成它，那是该错误可以帮上忙吗？

line 19, in <module>
matches = bf.match(np.array(kpTrain, desTrain))
TypeError: data type not understood

那是我的代码

import numpy as np
import cv2


camera = cv2.VideoCapture(0)
orb = cv2.ORB_create()

img = cv2.imread('/home/shar/home.jpg')
imggray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)


kpTrain = orb.detect(imggray,None)
kpTrain, desTrain = orb.compute(imggray, kpTrain)

ret, imgCamColor = camera.read()

bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck=True)

matches = bf.match(np.array(kpTrain, desTrain))

Answer 1

再次在这里，就像在question中一样，您试图匹配一个图像中的关键点和描述符。描述符的匹配是通过两个图像完成的。
1.在2张图片中找到关键点
2.计算两个图像的描述符
3.执行匹配。

在您的情况下，应该是这样的:

import numpy as np
import cv2

orb = cv2.ORB_create()

img = cv2.imread('/home/shar/home.jpg')
imggray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)

# load second image in grayscale
imggray2=cv2.imread('/path/to/image.jpg',0)

#Detector and descriptors for 1st image
kpTrain = orb.detect(imggray,None)
kpTrain, desTrain = orb.compute(imggray, kpTrain)

#Detector and descriptors for 2nd image
kpTrain2 = orb.detect(imggray2,None)
kpTrain2, desTrain2 = orb.compute(imggray2, kpTrain2)

bf = cv2.BFMatcher(cv2.NORM_HAMMING, crossCheck=True)

matches = bf.match(desTrain,desTrain2)