-
-
Save smidm/4c5aa8d8630181b6b81cf752da162446 to your computer and use it in GitHub Desktop.
Displaying webcam feed using OpenCV and Python+PySide.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
#!/usr/bin/env python | |
from PySide.QtCore import * | |
from PySide.QtGui import * | |
import cv2 | |
import sys | |
class MainApp(QWidget): | |
def __init__(self): | |
QWidget.__init__(self) | |
self.video_size = QSize(320, 240) | |
self.setup_ui() | |
self.setup_camera() | |
def setup_ui(self): | |
"""Initialize widgets. | |
""" | |
self.image_label = QLabel() | |
self.image_label.setFixedSize(self.video_size) | |
self.quit_button = QPushButton("Quit") | |
self.quit_button.clicked.connect(self.close) | |
self.main_layout = QVBoxLayout() | |
self.main_layout.addWidget(self.image_label) | |
self.main_layout.addWidget(self.quit_button) | |
self.setLayout(self.main_layout) | |
def setup_camera(self): | |
"""Initialize camera. | |
""" | |
self.capture = cv2.VideoCapture(0) | |
self.capture.set(cv2.CAP_PROP_FRAME_WIDTH, self.video_size.width()) | |
self.capture.set(cv2.CAP_PROP_FRAME_HEIGHT, self.video_size.height()) | |
self.timer = QTimer() | |
self.timer.timeout.connect(self.display_video_stream) | |
self.timer.start(30) | |
def display_video_stream(self): | |
"""Read frame from camera and repaint QLabel widget. | |
""" | |
_, frame = self.capture.read() | |
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) | |
frame = cv2.flip(frame, 1) | |
image = QImage(frame, frame.shape[1], frame.shape[0], | |
frame.strides[0], QImage.Format_RGB888) | |
self.image_label.setPixmap(QPixmap.fromImage(image)) | |
if __name__ == "__main__": | |
app = QApplication(sys.argv) | |
win = MainApp() | |
win.show() | |
sys.exit(app.exec_()) |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment