borisrunakov

## opencv_qt_label.md

      
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                docPhil99
                / opencv_qt_label.md
            
            
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              April 13, 2024 15:48
            
              
                How to display opencv video in pyqt apps
              
          
    The code for this tutorial is here
Opencv provides are useful, but limited, method of building a GUI. A much more complete system could be acheived using pyqt.
The question is, how do we display images. There are quite a few possible routes but perhaps the easiest is to use QLabel since it has a setPixmap function. Below is some code that creates two labels. It then creates a grey pixmap and displays it one of the labels. code: staticLabel1.py
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QVBoxLayout
from PyQt5.QtGui import QPixmap, QColor
import sys

  
## dpi.py
#!/usr/bin/env python

# calculate screen DPI
# supports both python 2 and 3

import re
import argparse
from math import sqrt
from subprocess import check_output
	#!/usr/bin/env python

	# calculate screen DPI
	# supports both python 2 and 3

	import re
	import argparse
	from math import sqrt
	from subprocess import check_output