python-3.x - Python中OpenCV的AttributeError

Question

Traceback (most recent call last):
 File "test.py", line 10, in <module>
  tracker = cv2.Tracker_create("MIL")
AttributeError: module 'cv2.cv2' has no attribute 'Tracker_create

当我尝试运行时出现上述错误:

import cv2
import sys

if __name__ == '__main__' :

# Set up tracker.
# Instead of MIL, you can also use
# BOOSTING, KCF, TLD, MEDIANFLOW or GOTURN

tracker = cv2.Tracker_create("MIL")

# Read video
video = cv2.VideoCapture(0)

# Exit if video not opened.
if not video.isOpened():
    print ("Could not open video")
    sys.exit()

# Read first frame.
ok, frame = video.read()
if not ok:
    print ('Cannot read video file')
    sys.exit()

# Define an initial bounding box
bbox = (287, 23, 86, 320)

# Uncomment the line below to select a different bounding box
# bbox = cv2.selectROI(frame, False)

# Initialize tracker with first frame and bounding box
ok = tracker.init(frame, bbox)

while True:
    # Read a new frame
    ok, frame = video.read()
    if not ok:
        break

    # Update tracker
    ok, bbox = tracker.update(frame)

    # Draw bounding box
    if ok:
        p1 = (int(bbox[0]), int(bbox[1]))
        p2 = (int(bbox[0] + bbox[2]), int(bbox[1] + bbox[3]))
        cv2.rectangle(frame, p1, p2, (0,0,255))

    # Display result
    cv2.imshow("Tracking", frame)

    # Exit if ESC pressed
    k = cv2.waitKey(1) & 0xff
    if k == 27 : break

我在这里找到了答案: How to add "Tracker" in openCV python 2.7

但这让我更加困惑。我在 MacOSX 上，我刚刚开始使用 OpenCV，我不确定如何使用正确的模块重新编译 OpenCV。

在此先感谢，如果我遗漏了一些明显的东西，我很抱歉。

Answer 1

所以这不是安装的情况，而是构造函数名称发生了变化。

tracker = cv2.Tracker_create("MIL")

应该:

tracker = cv2.TrackerMIL_create()