def __init__(self, title, x, y, width, height, device=0):
super(MainView, self).__init__(title, x, y, width, height)
self.video_capture = ZOpenCVVideoCapture()
self.video_capture.open(device)
self.image_view = ZOpenCVImageView(self)
self.add(self.image_view)
title = str(device)
self.set_filenamed_title(title)
self.show()
class MainView(ZApplicationView):
# Constructor
def __init__(self, title, x, y, width, height, device=0):
super(MainView, self).__init__(title, x, y, width, height)
self.video_capture = ZOpenCVVideoCapture()
self.video_capture.open(device)
self.image_view = ZOpenCVImageView(self)
self.add(self.image_view)
title = str(device)
self.set_filenamed_title(title)
self.show()
# Read a frame from a video buffer of the video capture, and set it the image view to draw it on the imag view
def render(self):
if self.video_capture.is_opened():
frame = self.video_capture.read()
if frame.any() != None:
self.image_view.set_opencv_image(frame)
self.image_view.update()
return True
else:
# If the video_capture closed, return False
return False
# Show FileOpenDialog and select an image file.
def file_open(self):
options = QFileDialog.Options()
filename, _ = QFileDialog.getOpenFileName(
self,
"FileOpenDialog",
"",
"All Files (*);;Image Files (*.png;*jpg;*.jpeg)",
options=options)
if filename:
self.video_capture.close()
self.video_capture.open(filename)
self.set_filenamed_title(filename)
def file_quit(self):
self.terminated = True
self.video_capture.close()
self.close()
class MainView(ZApplicationView):
# Constructor
def __init__(self, title, x, y, width, height, device=0):
super(MainView, self).__init__(title, x, y, width, height)
self.video_capture = ZOpenCVVideoCapture()
self.video_capture.open(device)
self.image_view = ZOpenCVImageView(self)
self.add(self.image_view)
title = str(device) + " - " + name
self.setWindowTitle(title)
self.show()
# Read a frame from a video buffer of the video capture, and set it the image view to draw it on the imag view
def render(self):
if self.video_capture.is_opened():
frame = self.video_capture.read()
if frame.any() != None:
self.image_view.set_opencv_image(frame)
self.image_view.update()
return True
else:
# If the video_capture closed, return False
return False
def file_quit(self):
self.terminated = True
self.video_capture.close()
self.close()
def cam_process(raw_video_queue, device=0):
video_capture = ZOpenCVVideoCapture()
video_capture.open(device)
# Get a raw frame
#frame = video_capture.read()
#nrows, ncols, ncs = frame.shape
# Get optimal dft si
# fps limit settings
time_snapshot_seconds = time()
fps_limit_hz = 10
while True:
if video_capture.is_opened():
frame = video_capture.read()
current_time_seconds = time()
if current_time_seconds > time_snapshot_seconds: # Avoid dividing by zero
if ((1 / (current_time_seconds - time_snapshot_seconds)) <=
fps_limit_hz): # Rate limit
gray_image = cv2.cvtColor(frame, cv2.COLOR_RGB2GRAY)
#raw_video_queue.put(frame)
raw_video_queue.put_nowait(gray_image) # non-blocking
time_snapshot_seconds = current_time_seconds
def cam_process(raw_video_queue, device=0):
video_capture = ZOpenCVVideoCapture()
video_capture.open(device)
while True:
if video_capture.is_opened():
frame = video_capture.read()
#raw_video_queue.put(frame)
raw_video_queue.put_nowait(frame) # non-blocking
def cam_process(message_queue, raw_video_queue, device=0):
video_capture = ZOpenCVVideoCapture()
video_capture.open(device)
while True:
try:
"""
if not message_queue.empty():
if message_queue.get() == "exit":
print("fskdnhbfkjsdbhfhbk")
#video_capture.close()
#message_queue.close()
#raw_video_queue.close()
break
"""
if video_capture.is_opened():
frame = video_capture.read()
raw_video_queue.put(frame)
#raw_video_queue.put_nowait(frame) # non-blocking
except KeyboardInterrupt:
print("ignore CTRL-C from worker")
print("to terminate child process correctly")
print("Here")