pyqt5显示视频的同时显示框
时间: 2023-11-28 10:03:49 浏览: 107
您可以使用Qt的QLabel控件来显示图像和视频帧。在PyQt5中,您可以使用QPixmap和QImage来加载图像和视频帧,然后将它们设置为QLabel的背景。以下是一个简单的示例代码,它显示一个视频并在同一窗口中显示一个框:
```python
import cv2
from PyQt5.QtGui import QPixmap, QImage
from PyQt5.QtWidgets import QApplication, QLabel, QWidget
from PyQt5.QtCore import QTimer
class VideoPlayer(QWidget):
def __init__(self):
super().__init__()
self.setWindowTitle("Video Player")
self.setGeometry(300, 300, 640, 480)
# Create a QLabel to display the video
self.video_label = QLabel(self)
self.video_label.setGeometry(0, 0, 640, 480)
# Create a QLabel to display the box
self.box_label = QLabel(self)
self.box_label.setGeometry(0, 0, 0, 0)
self.box_label.setStyleSheet("border: 2px solid red;")
# Load the video
self.video = cv2.VideoCapture(0)
# Start the timer to update the video
self.timer = QTimer(self)
self.timer.timeout.connect(self.update_video)
self.timer.start(50)
def update_video(self):
# Read a frame from the video
ret, frame = self.video.read()
# Convert the frame to a QImage
q_image = QImage(frame, frame.shape[1], frame.shape[0], QImage.Format_RGB888)
# Convert the QImage to a QPixmap
pixmap = QPixmap.fromImage(q_image)
# Set the QPixmap as the background of the QLabel
self.video_label.setPixmap(pixmap)
# Update the box position and size
box_x = 100
box_y = 100
box_width = 200
box_height = 200
self.box_label.setGeometry(box_x, box_y, box_width, box_height)
if __name__ == "__main__":
app = QApplication([])
window = VideoPlayer()
window.show()
app.exec_()
```
在此示例中,我们使用cv2.VideoCapture从摄像头读取视频帧。我们使用QTimer将update_video函数定期调用,以便我们可以更新视频和框的位置和大小。我们将视频帧转换为QImage,然后将其转换为QPixmap,并将其设置为QLabel的背景。我们还更新框的位置和大小,并在框周围绘制一个红色的边框。
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