我想在Ubunto 14.04中使用python 3下的opencv.我计划使用PyCharm IDE来开发我的程序.
在我选择的PyCharm中,我设置:
文件/设置/项目:HelloWorld/Project Interpreter/3.4.3(/usr/bin/python3.4)
Python 3.4.3是Ubunto 14.04中python的默认版本.
然后我尝试添加opencv-python包:
文件/设置/项目:HelloWorld/Project Interpreter/+(你添加包的地方)
并且系统给了我这个错误:
Executed command:
pip install opencv-python
Try to run this command from the system terminal. Make sure that you
use the correct version of 'pip' installed for your Python interpreter located at '/usr/bin/python3.4'.
DEPRECATION: --no-install, --no-download, --build, and --no-clean are deprecated. See https://github.com/pypa/pip/issues/906.
Downloading/unpacking opencv-python
Could not find any downloads that satisfy the requirement opencv-python
Cleaning up...
No distributions at all found for opencv-python …鉴于以下 PyQt 代码，我可以完美地捕捉网络摄像头的流媒体视频。
现在，我想修改代码，因此添加了一个名为“捕获”按钮的按钮，一旦按下它就会捕获流视频并保存图像。我怎样才能做到这一点？
获得的小图像将用于查询对象识别服务器。
import sys
from PyQt4 import QtGui, QtCore
import cv2
class QtCapture(QtGui.QWidget):
def __init__(self, *args):
super(QtGui.QWidget, self).__init__()
self.fps = 24
self.cap = cv2.VideoCapture(*args)
self.video_frame = QtGui.QLabel()
lay = QtGui.QVBoxLayout()
lay.setMargin(0)
lay.addWidget(self.video_frame)
self.setLayout(lay)
def setFPS(self, fps):
self.fps = fps
def nextFrameSlot(self):
ret, frame = self.cap.read()
# My webcam yields frames in BGR format
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
img = QtGui.QImage(frame, frame.shape[1], frame.shape[0], QtGui.QImage.Format_RGB888)
pix = QtGui.QPixmap.fromImage(img)
self.video_frame.setPixmap(pix)
def start(self):
self.timer = QtCore.QTimer()
self.timer.timeout.connect(self.nextFrameSlot)
self.timer.start(1000./self.fps)
def …