我用opencv制作smartmirror . 我用raspbian但是，我有一个问题 .
导入必要的包
from picamera.array import PiRGBArray
from picamera import PiCamera
import time
import cv2
def detect(img, cascade):
rects = cascade.detectMultiScale(img, scaleFactor=1.3, minNeighbors=4,
minSize=(30, 30), flags=cv2.CASCADE_SCALE_IMAGE)
if len(rects) == 0:
return []
rects[:,2:] += rects[:,:2]
return rects
def draw_rects(img, rects, color):
for x1, y1, x2, y2 in rects:
cv2.rectangle(img, (x1, y1), (x2, y2), color, 2)
初始化相机并获取原始相机捕获的参考
camera = PiCamera()
camera.resolution = (640, 480)
camera.framerate = 32
rawCapture = PiRGBArray(camera, size=(640, 480))
cascade = cv2.CascadeClassifier("opencv-3.3.0/data/haarcascades/haarcascade_frontalface_alt.xml")
让相机进行预热
time.sleep(0.1)
scan = 0
从相机捕获帧
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):
# grab the raw NumPy array representing the image, then initialize the timestamp
# and occupied/unoccupied text
img = frame.array
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
gray = cv2.equalizeHist(gray)
rects = detect(gray, cascade)
if len(rects) != 0:
scan = 1
vis = img.copy()
draw_rects(vis, rects, (0, 255, 0))
# show the frame
cv2.imshow("Frame", vis)
key = cv2.waitKey(1) & 0xFF
# clear the stream in preparation for the next frame
rawCapture.truncate(0)
# if the `q` key was pressed, break from the loop
if scan == 1:
break
所以，在虚拟环境中，我想将变量（扫描）带入我的文件（.py） . 但是，我得到一个错误，没有名为cv2的模块如何将变量（扫描）用于我的文件？请帮帮我 .
这是我的文件（.py）
#smartmirror.py
from __future__ import print_function
from aplclient.discovery import build
from httplib2 import Http
from oauth2client import file, clinet, tools
from Tkinter import *
import locale
(used coding)