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Displaying webcam feed using OpenCV and Python+PySide.
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#!/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.cv.CV_CAP_PROP_FRAME_WIDTH, self.video_size.width()) | |
self.capture.set(cv2.cv.CV_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.cv.CV_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_()) |
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It needed some editing to work with
pyside2 5.15.2
opencv-python 4.3.0.36
Here is updated version: