Memory leaks OpenCV:使用QPixmap时内存泄漏
我正在尝试使用opencv从一台1920x1080高清摄像机(每秒60帧)上传视频流。问题不在于流媒体,而在于内存泄漏,在流媒体的第一分钟内,我就损失了近6GB的内存。请帮我阻止这一切Memory leaks OpenCV:使用QPixmap时内存泄漏,memory-leaks,video-streaming,pyside,python-3.4,qpixmap,Memory Leaks,Video Streaming,Pyside,Python 3.4,Qpixmap,我正在尝试使用opencv从一台1920x1080高清摄像机(每秒60帧)上传视频流。问题不在于流媒体,而在于内存泄漏,在流媒体的第一分钟内,我就损失了近6GB的内存。请帮我阻止这一切 from PySide.QtCore import * from PySide.QtGui import * import cv2 import sys class MainApp(QWidget): def __init__(self): QWidget.__
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(1920, 1080)
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.CAP_PROP_FRAME_WIDTH, self.video_size.width())
self.capture.set(cv2.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.COLOR_BGR2RGB)
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_())
编辑
我发现内存泄漏的位置是self.timer.start(30)如果我增加时间调用,内存泄漏会变慢。有任何关于如何停止内存泄漏的建议吗?如果任何人有相同的问题,请导入qimage2ndarray此库并添加 对功能display\u video\u stream的以下更改
def display_video_stream(self):
"""Read frame from camera and repaint QLabel widget.
"""
_, frame = self.capture.read()
frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
# frame = cv2.flip(frame, 1)
image = qimage2ndarray.array2qimage(frame) #Solution for memory leak
self.image_label.setPixmap(QPixmap.fromImage(image))