PyQt5 add text on webcam image - opencv

Question

I would be glad if you help.
Subject: PyQt5
In Pyqt5, I can open the webcam image using opencv.
What I want to do is to add text to the point I want on the camera image. I couldn't do it anyway. I left the code I wrote below.
Note: I don't want to add text with opencv or PIL library. There are no Turkish characters in Opencv, PIL works very slowly.
Thank you from now.
from PyQt5 import QtGui
from PyQt5.QtWidgets import QWidget, QApplication, QLabel,
QVBoxLayout,QHBoxLayout
from PyQt5.QtGui import QPixmap
import sys
import cv2
from PyQt5.QtCore import pyqtSignal, pyqtSlot, Qt, QThread
import numpy as np
class VideoThread(QThread):
change_pixmap_signal = pyqtSignal(np.ndarray)
def __init__(self):
super().__init__()
self._run_flag = True
def run(self):
# capture from analog camera
cap = cv2.VideoCapture(0)
cap.set(3,720)
cap.set(4,576)
while self._run_flag:
ret, cv_img = cap.read()
if ret:
cv_img = cv2.resize(cv_img, (1024, 768))
self.change_pixmap_signal.emit(cv_img)
# shut down capture system
cap.release()
def stop(self):
#stop capture
self._run_flag = False
self.wait()
class App(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("KONSOL")
self.disply_width = 1024
self.display_height = 768
# create the label that holds the image
self.image_label = QLabel(self)
self.image_label.resize(self.disply_width, self.display_height)
# create a text label
self.textLabel = QLabel('XXXX')
# create a vertical box layout and add the two labels
vbox = QVBoxLayout()
vbox.addWidget(self.image_label)
vbox.addWidget(self.textLabel)
# set the vbox layout as the widgets layout
self.setLayout(vbox)
# create the video capture thread
self.thread = VideoThread()
# connect its signal to the update_image slot
self.thread.change_pixmap_signal.connect(self.update_image)
# start the thread
self.thread.start()
def closeEvent(self, event):
self.thread.stop()
event.accept()
#pyqtSlot(np.ndarray)
def update_image(self, cv_img):
"""Updates the image_label with a new opencv image"""
qt_img = self.convert_cv_qt(cv_img)
self.image_label.setPixmap(qt_img)
def convert_cv_qt(self, cv_img):
"""Convert from an opencv image to QPixmap"""
rgb_image = cv2.cvtColor(cv_img, cv2.COLOR_BGR2RGB)
h, w, ch = rgb_image.shape
bytes_per_line = ch * w
convert_to_Qt_format = QtGui.QImage(rgb_image.data, w, h, bytes_per_line, QtGui.QImage.Format_RGB888)
p = convert_to_Qt_format.scaled(self.disply_width, self.display_height, Qt.KeepAspectRatio)
return QPixmap.fromImage(p)
if __name__ == "__main__":
app = QApplication(sys.argv)
a = App()
a.show()
sys.exit(app.exec_())