PyQt5 widget for OpenCV camera preview with multiple instantiation and real time image filtering.
This module contains the next classes:
CameraDevice: Manages image capture and emits a signal when a new frame is available.CameraWidget: Implements a Qt widget for camera image preview.Filters: Implements some basic image filters.
from PyQt5.QtWidgets import QApplication
from qtcam import CameraDevice, CameraWidget
app = QApplication([])
widget = CameraWidget(CameraDevice())
widget.show()
app.exec_()from PyQt5.QtWidgets import QApplication
from qtcam import CameraDevice, CameraWidget, Filter
app = QApplication([])
device = CameraDevice()
widget_1 = CameraWidget(device)
widget_1.show()
widget_2 = CameraWidget(device)
widget_2.add_filter(Filter.gray)
widget_2.show()
app.exec_()import cv2
from PyQt5.QtWidgets import QApplication
from qtcam import CameraDevice, CameraWidget
def custom_filter(frame):
return cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)
app = QApplication([])
widget = CameraWidget(CameraDevice())
widget.add_filter(custom_filter)
widget.show()
app.exec_()- multiple_widgets.py: Multiple widget instances using some built-in filters.
- filter_tester.py: PyQt application using the widget to test all built-in filters.