Question

刚刚从opencv-2.4.11升级，KNearest似乎缺失了

In [27]: import cv2
In [28]: print(cv2.__version__)
3.0.0-beta

In [29]: cv2.KNearest()

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
<ipython-input-29-d2ea29abad59> in <module>()
----> 1 cv2.KNearest()

AttributeError: 'module' object has no attribute 'KNearest'

In [30]: cv2.K
cv2.KAZE_DIFF_CHARBONNIER      cv2.KAZE_DIFF_WEICKERT         cv2.KMEANS_RANDOM_CENTERS      cv2.KeyPoint
cv2.KAZE_DIFF_PM_G1            cv2.KAZE_create                cv2.KMEANS_USE_INITIAL_LABELS  cv2.KeyPoint_convert
cv2.KAZE_DIFF_PM_G2            cv2.KMEANS_PP_CENTERS          cv2.KalmanFilter               cv2.KeyPoint_overlap

Answer 1

实际上，<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <body></body>已移至opencv3中的模块KNearest，您必须致电cv2.ml才能使用knn。

cv2.ml.KNearest_create()

有关详细信息，请运行In [1]: import cv2 In [2]: cv2.__version__ Out[2]: '3.0.0' In [3]: cv2.ml.KNea cv2.ml.KNearest_BRUTE_FORCE cv2.ml.KNearest_create cv2.ml.KNearest_KDTREE In [3]: cv2.ml.KNearest_create。

享受：）

Answer 2

许多模块已从OpenCV核心中删除并标记为非自由。这些模块具有单独的存储库，必须单独构建。

存储库位于https://github.com/itseez/opencv_contrib/

在此回答https://stackoverflow.com/a/27419092/892914

中找到了相关信息

OpenCV 3.0.0-beta缺少KNN？

2 个答案: