if self.thread_show_img is not None: self.Processmanage[0]=False self.Processmanage[1]=None self.thread_show_img.terminate() self.thread_show_img = None
时间: 2024-04-27 09:21:20 浏览: 59
这段代码判断 self.thread_show_img 是否为 None。如果不为 None,则将 Processmanage 列表中的第一个元素设为 False,第二个元素设为 None,并终止 self.thread_show_img 线程的执行。最后将 self.thread_show_img 设为 None。
这段代码的作用是:当已经存在一个显示图像的线程时,需要先终止该线程的执行,然后清空 Processmanage 列表中的相关变量,并将 self.thread_show_img 设为 None。这样做是为了避免多个线程同时执行,从而导致不一致性和竞争问题的发生。
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程序无法执行,修改class Processor(): def __init__(self): self._inspect_step = int(cfg.get('PROCESS', 'INSPECT_STEP')) def capture_img(self): global aco aco = aco + 1 self._cam.stream_on() raw_image = self._cam.data_stream[0].get_image() if raw_image is None: print("Getting image failed.\n") return None print("Frame ID: {} Height: {} Width: {} Count: {}\n" .format(raw_image.get_frame_id(), raw_image.get_height(), raw_image.get_width(), aco - 2)) numpy_image = raw_image.get_numpy_array() if numpy_image is None: return None img = Image.fromarray(numpy_image, 'L') if self._issave: picfile = '{}/{}.bmp'.format(self._picpath, self._piccount) self._piccount = self._piccount + 1 img.save(picfile) if self._isshow: w, h = img.size scale = min(1.0 * IMG_RESIZE_W / w, 1.0 * IMG_RESIZE_H / h) self._img = ImageTk.PhotoImage(image=img.resize((int(w * scale), int(h * scale)), Image.ANTIALIAS)) self._show_cb(self._img) self._cam.stream_off() return img def process_img(self, img): return PROC_OK def inspect(self): print("process2") time.sleep(1) def rotate(self): count = 0 aco = 0 self.threadsignal = 0 while self._running: v = self._dgl.qpin(ROT) if len(v) > 0: count = count + sum(v) if count > self._inspect_step: aco += 1 img = self.capture_img() count = count - self._inspect_step if __name__ == '__main__': task2 = multiprocessing.Process(target=self.inspect) task2.start() task1 = multiprocessing.Process(target=self.rotate) task1.start()
在这段代码中,有几个问题可以被改进。首先,类 `Processor` 中的全局变量 `aco` 可能会导致并发问题,在多进程环境下应该避免使用全局变量。其次,代码中出现了 `time.sleep()`,这会阻塞当前进程并造成性能瓶颈,应该尽量避免使用。
以下是可能的改进方案:
1. 将 `aco` 变量改为实例变量,避免多进程之间的并发问题。
2. 使用 `Queue` 或其他进程间通信机制替代全局变量,避免多进程之间的竞争。
3. 将 `time.sleep()` 改为使用定时器或者事件,避免阻塞进程并提高程序的性能。
4. 在多进程环境中,使用 `if __name__ == '__main__':` 来避免创建子进程时出现递归调用的问题。
以下是修改后的代码示例:
```python
import multiprocessing
from queue import Queue
import time
class Processor():
def __init__(self):
self._inspect_step = int(cfg.get('PROCESS', 'INSPECT_STEP'))
self._aco = 0
self._queue = Queue()
def capture_img(self):
self._aco += 1
self._cam.stream_on()
raw_image = self._cam.data_stream[0].get_image()
if raw_image is None:
print("Getting image failed.\n")
return None
print("Frame ID: {} Height: {} Width: {} Count: {}\n".format(raw_image.get_frame_id(), raw_image.get_height(), raw_image.get_width(), self._aco - 2))
numpy_image = raw_image.get_numpy_array()
if numpy_image is None:
return None
img = Image.fromarray(numpy_image, 'L')
if self._issave:
picfile = '{}/{}.bmp'.format(self._picpath, self._piccount)
self._piccount = self._piccount + 1
img.save(picfile)
if self._isshow:
w, h = img.size
scale = min(1.0 * IMG_RESIZE_W / w, 1.0 * IMG_RESIZE_H / h)
self._img = ImageTk.PhotoImage(image=img.resize((int(w * scale), int(h * scale)), Image.ANTIALIAS))
self._show_cb(self._img)
self._cam.stream_off()
return img
def process_img(self, img):
return PROC_OK
def inspect(self):
print("process2")
while self._running:
time.sleep(1)
self._queue.put("task")
def rotate(self):
count = 0
while self._running:
v = self._dgl.qpin(ROT)
if len(v) > 0:
count = count + sum(v)
if count > self._inspect_step:
self._aco += 1
img = self.capture_img()
count = count - self._inspect_step
try:
task = self._queue.get(block=False)
if task == "task":
print("processing task")
except:
pass
if __name__ == '__main__':
p = Processor()
p._running = True
task2 = multiprocessing.Process(target=p.inspect)
task2.start()
task1 = multiprocessing.Process(target=p.rotate)
task1.start()
```
请注意,这里只是对原始代码的一些修改建议,并不能保证这样的修改能够完全解决问题。在实际环境中,还需要根据具体情况进行调整和优化。
下面代码什么作用class MainWindow(QMainWindow, Ui_mainWindow): def init(self, parent=None): super(MainWindow, self).init(parent) self.setupUi(self) self.m_flag = False # style 1: window can be stretched # self.setWindowFlags(Qt.CustomizeWindowHint | Qt.WindowStaysOnTopHint) # style 2: window can not be stretched self.setWindowFlags(Qt.Window | Qt.FramelessWindowHint | Qt.WindowSystemMenuHint | Qt.WindowMinimizeButtonHint | Qt.WindowMaximizeButtonHint) # self.setWindowOpacity(0.85) # Transparency of window self.minButton.clicked.connect(self.showMinimized) self.maxButton.clicked.connect(self.max_or_restore) # show Maximized window # self.maxButton.animateClick(10) self.closeButton.clicked.connect(self.close) self.qtimer = QTimer(self) self.qtimer.setSingleShot(True) self.qtimer.timeout.connect(lambda: self.statistic_label.clear()) # search models automatically 自动搜索模型 self.comboBox.clear() self.pt_list = os.listdir('./pt') self.pt_list = [file for file in self.pt_list if file.endswith('.pt')] self.pt_list.sort(key=lambda x: os.path.getsize('./pt/'+x)) self.comboBox.clear() self.comboBox.addItems(self.pt_list) self.qtimer_search = QTimer(self) self.qtimer_search.timeout.connect(lambda: self.search_pt()) self.qtimer_search.start(2000) # yolov5 thread self.det_thread = DetThread() self.model_type = self.comboBox.currentText() self.det_thread.weights = "./pt/%s" % self.model_type self.det_thread.source = '0' self.det_thread.percent_length = self.progressBar.maximum() self.det_thread.send_raw.connect(lambda x: self.show_image(x, self.raw_video)) self.det_thread.send_img.connect(lambda x: self.show_image(x, self.out_video)) self.det_thread.send_statistic.connect(self.show_statistic) self.det_thread.send_msg.connect(lambda x: self.show_msg(x)) self.det_thread.send_percent.connect(lambda x: self.progressBar.setValue(x)) self.det_thread.send_fps.connect(lambda x: self.fps_label.setText(x)) self.fileButton.clicked.connect(self.open_file) self.cameraButton.clicked.connect(self.chose_cam) self.rtspButton.clicked.connect(self.chose_rtsp) self.runButton.clicked.connect(self.run_or_continue) self.stopButton.clicked.connect(self.stop) self.comboBox.currentTextChanged.connect(self.change_model) self.confSpinBox.valueChanged.connect(lambda x: self.change_val(x, 'confSpinBox')) self.confSlider.valueChanged.connect(lambda x: self.change_val(x, 'confSlider')) self.iouSpinBox.valueChanged.connect(lambda x: self.change_val(x, 'iouSpinBox')) self.iouSlider.valueChanged.connect(lambda x: self.change_val(x, 'iouSlider')) self.rateSpinBox.valueChanged.connect(lambda x: self.change_val(x, 'rateSpinBox')) self.rateSlider.valueChanged.connect(lambda x: self.change_val(x, 'rateSlider')) self.checkBox.clicked.connect(self.checkrate) self.saveCheckBox.clicked.connect(self.is_save) self.load_setting()
这段代码是一个 PyQt5 程序的主窗口类,继承了 QMainWindow 和 Ui_mainWindow 类,实现了 UI 界面和逻辑的交互。在 init 方法中,设置了窗口的一些属性,如窗口是否可拉伸、是否有最大化和最小化按钮等。还设置了一些按钮的点击事件,并连接了一些信号和槽函数,如设置了定时器用于搜索模型和显示统计信息等。同时还实现了一些方法用于处理不同的事件,如打开文件、选择摄像头等。最后,加载了之前保存的配置信息。
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