[英]I am unable to download cv2, for whatever reason it does not work
from collections import deque
from imutils.video import VideoStream
import numpy as np
import argparse
import cv2
import imutils
import time
ap = argparse.ArgumentParser()
ap.add_argument("-v", "--video",
help="Users/ejr/Desktop/curry.mp4")
ap.add_argument("-b", "--buffer", type=int, default=64,
help="max buffer size")
args = vars(ap.parse_args())
greenLower = (29, 86, 6)
greenUpper = (64, 255, 255)
pts = deque(maxlen=args["buffer"])
if not args.get("video", False):
vs = VideoStream(src=0).start()
else:
vs = cv2.VideoCapture(args["video"])
time.sleep(2.0)
while True:
frame = vs.read()
frame = frame[1] if args.get("video", False) else frame
if frame is None:
break
frame = imutils.resize(frame, width=600)
blurred = cv2.GaussianBlur(frame, (11, 11), 0)
hsv = cv2.cvtColor(blurred, cv2.COLOR_BGR2HSV)
mask = cv2.inRange(hsv, greenLower, greenUpper)
mask = cv2.erode(mask, None, iterations=2)
mask = cv2.dilate(mask, None, iterations=2)
cnts = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL,
cv2.CHAIN_APPROX_SIMPLE)
cnts = imutils.grab_contours(cnts)
center = None
if len(cnts) > 0:
c = max(cnts, key=cv2.contourArea)
((x, y), radius) = cv2.minEnclosingCircle(c)
M = cv2.moments(c)
center = (int(M["m10"] / M["m00"]), int(M["m01"] / M["m00"]))
if radius > 10:
cv2.circle(frame, (int(x), int(y)), int(radius),
(0, 255, 255), 2)
cv2.circle(frame, center, 5, (0, 0, 255), -1)
pts.appendleft(center)
for i in range(1, len(pts)):
if pts[i - 1] is None or pts[i] is None:
continue
thickness = int(np.sqrt(args["buffer"] / float(i + 1)) * 2.5)
cv2.line(frame, pts[i - 1], pts[i], (0, 0, 255), thickness)
cv2.imshow("Frame", frame)
key = cv2.waitKey(1) & 0xFF
if key == ord("q"):
break
if not args.get("video", False):
vs.stop()
else:
vs.release()
cv2.destroyAllWindows()
這是我的代碼,我不知道為什么我在嘗試 pip install 時一直收到 cv2 沒有模塊錯誤。 (我在 Mac 上,Python 3.7.4)。 我想知道這里的導入錯誤是什么,版本是否已更改,我是否需要使用 Python 2,或者是否有我應該使用的較新的 cv
嘗試:
pip install opencv-python
或者
pip3.7 install opencv-python
我認為您正在運行pip install cv2
,它不存在,因為 cv2 的項目是: https ://pypi.org/project/opencv-python/
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