def readCameraQR(self):
self.initUi()
if len(QCameraInfo.availableCameras()) == 0:
logging.warning(
g_tr('ImportSlipDialog', "There are no cameras available"))
return
self.cameraActive = True
self.CameraGroup.setVisible(True)
self.SlipDataGroup.setVisible(False)
camera_info = QCameraInfo.defaultCamera()
logging.info(
g_tr('ImportSlipDialog',
"Read QR with camera: " + camera_info.deviceName()))
self.camera = QCamera(camera_info)
self.camera.errorOccurred.connect(self.onCameraError)
self.img_capture = QCameraImageCapture(self.camera)
self.img_capture.setCaptureDestination(
QCameraImageCapture.CaptureToBuffer)
self.img_capture.setBufferFormat(QVideoFrame.Format_RGB32)
self.img_capture.error.connect(self.onCameraCaptureError)
self.img_capture.readyForCaptureChanged.connect(self.onReadyForCapture)
self.img_capture.imageAvailable.connect(self.onCameraImageReady)
self.camera.setViewfinder(self.Viewfinder)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.camera.start()
def __init__(self, img_rec: ImageRecognition, res_wid: ResultWid,
sig_res_wid: SingleResultWid):
super(CameraMainWin, self).__init__()
self.setupUi(self)
# 设置图像处理实例和跳转实例
self.img_rec = img_rec
self.res_wid = res_wid
self.sig_res_wid = sig_res_wid
# camera设置
self.camera = QCamera()
self.camera.setCaptureMode(QCamera.CaptureViewfinder)
self.cameraOpened = False # 设置相机打开状态为未打开
# 设置取景器分辨率
view_finder_settings = QCameraViewfinderSettings()
self.camera.setViewfinderSettings(view_finder_settings)
# 初始化取景器
self.viewCamera = QtMultimediaWidgets.QCameraViewfinder(self)
self.camera.setViewfinder(self.viewCamera)
self.cameraLayout.addWidget(self.viewCamera) # 取景器放置到预留的布局中
# 设置图像捕获
self.capImg = QCameraImageCapture(self.camera)
self.capImg.setCaptureDestination(QCameraImageCapture.CaptureToBuffer)
self.capImg.imageCaptured.connect(self._process_captured_image)
# 绑定按钮槽函数
self.cameraButton.clicked.connect(self.switch_camera)
self.captureButton.clicked.connect(self.take_pic)
self.loadButton.clicked.connect(self.load_file)
self.reconitionButton.clicked.connect(self.load_path)
self.chg_mod_Button.clicked.connect(self.change_model)
def __init__(self):
super(MainWindow, self).__init__()
self.cameraInfo = QCameraInfo.defaultCamera()
self.camera = QCamera(self.cameraInfo)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.imageCapture = QCameraImageCapture(self.camera)
self.imageCapture.imageCaptured.connect(self.imageCaptured)
self.imageCapture.imageSaved.connect(self.imageSaved)
self.currentPreview = QImage()
toolBar = QToolBar()
self.addToolBar(toolBar)
fileMenu = self.menuBar().addMenu("&File")
shutterIcon = QIcon(
os.path.join(os.path.dirname(__file__), "shutter.svg"))
self.takePictureAction = QAction(shutterIcon,
"&Take Picture",
self,
shortcut="Ctrl+T",
triggered=self.takePicture)
self.takePictureAction.setToolTip("Take Picture")
fileMenu.addAction(self.takePictureAction)
toolBar.addAction(self.takePictureAction)
exitAction = QAction(QIcon.fromTheme("application-exit"),
"E&xit",
self,
shortcut="Ctrl+Q",
triggered=self.close)
fileMenu.addAction(exitAction)
aboutMenu = self.menuBar().addMenu("&About")
aboutQtAction = QAction("About &Qt", self, triggered=qApp.aboutQt)
aboutMenu.addAction(aboutQtAction)
self.tabWidget = QTabWidget()
self.setCentralWidget(self.tabWidget)
self.cameraViewfinder = QCameraViewfinder()
self.camera.setViewfinder(self.cameraViewfinder)
self.tabWidget.addTab(self.cameraViewfinder, "Viewfinder")
if self.camera.status() != QCamera.UnavailableStatus:
name = self.cameraInfo.description()
self.setWindowTitle("PySide2 Camera Example (" + name + ")")
self.statusBar().showMessage("Starting: '" + name + "'", 5000)
self.camera.start()
else:
self.setWindowTitle("PySide2 Camera Example")
self.takePictureAction.setEnabled(False)
self.statusBar().showMessage("Camera unavailable", 5000)
def select_camera(self, i):
self.camera = QCamera(self.available_cameras[i])
self.camera.setViewfinder(self.viewfinder)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.camera.error.connect(lambda: self.alert(self.camera.errorString()))
self.camera.start()
self.capture = QCameraImageCapture(self.camera)
self.capture.error.connect(lambda i, e, s: self.alert(s))
self.capture.imageCaptured.connect(lambda d, i: self.status.showMessage("Image %04d captured" % self.save_seq))
self.current_camera_name = self.available_cameras[i].description()
self.save_seq = 0
def setCamera(self, cameraInfo):
self.m_pCamera = QCamera(cameraInfo)
self.m_pImageCapture = QCameraImageCapture(self.m_pCamera.metaData(self))
self.refreshResAndCodecList()
self.m_pCamera.setCaptureMode(QCamera.CaptureStillImage)
self.m_pCamera.setCaptureMode(QCamera.CaptureMode.CaptureViewfinder)
self.m_pCamera.setViewfinder(self.ui.viewfinder)
self.m_pCamera.start()
pass
def __init__(self):
super(MainWindow, self).__init__()
self.cameraInfo = QCameraInfo.defaultCamera()
self.camera = QCamera(self.cameraInfo)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.imageCapture = QCameraImageCapture(self.camera)
self.imageCapture.imageCaptured.connect(self.imageCaptured)
self.imageCapture.imageSaved.connect(self.imageSaved)
self.currentPreview = QImage()
toolBar = QToolBar()
self.addToolBar(toolBar)
fileMenu = self.menuBar().addMenu("&File")
shutterIcon = QIcon(os.path.join(os.path.dirname(__file__),
"shutter.svg"))
self.takePictureAction = QAction(shutterIcon, "&Take Picture", self,
shortcut="Ctrl+T",
triggered=self.takePicture)
self.takePictureAction.setToolTip("Take Picture")
fileMenu.addAction(self.takePictureAction)
toolBar.addAction(self.takePictureAction)
exitAction = QAction(QIcon.fromTheme("application-exit"), "E&xit",
self, shortcut="Ctrl+Q", triggered=self.close)
fileMenu.addAction(exitAction)
aboutMenu = self.menuBar().addMenu("&About")
aboutQtAction = QAction("About &Qt", self, triggered=qApp.aboutQt)
aboutMenu.addAction(aboutQtAction)
self.tabWidget = QTabWidget()
self.setCentralWidget(self.tabWidget)
self.cameraViewfinder = QCameraViewfinder()
self.camera.setViewfinder(self.cameraViewfinder)
self.tabWidget.addTab(self.cameraViewfinder, "Viewfinder")
if self.camera.status() != QCamera.UnavailableStatus:
name = self.cameraInfo.description()
self.setWindowTitle("PySide2 Camera Example (" + name + ")")
self.statusBar().showMessage("Starting: '" + name + "'", 5000)
self.camera.start()
else:
self.setWindowTitle("PySide2 Camera Example")
self.takePictureAction.setEnabled(False)
self.statusBar().showMessage("Camera unavailable", 5000)
def select_camera(self, i):
# getting the selected camera
self.camera = QCamera(self.available_cameras[i])
# setting capture mode to the camera
self.camera.setCaptureMode(QCamera.CaptureStillImage)
# start the camera
self.camera.start()
# creating a QCameraImageCapture object
self.capture = QCameraImageCapture(self.camera)
# when image captured showing message
self.capture.imageCaptured.connect(
lambda d, i: self.status.showMessage("Image captured : " + str(
self.save_seq)))
# getting current camera name
self.current_camera_name = self.available_cameras[i].description()
# inital save sequence
self.save_seq = 0
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.cameraInfo = QCameraInfo.defaultCamera()
self.camera = QCamera(self.cameraInfo)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.imageCapture = QCameraImageCapture(self.camera)
self.imageCapture.imageCaptured.connect(self.imageCaptured)
self.imageCapture.imageSaved.connect(self.imageSaved)
self.currentPreview = QImage()
toolBar = QToolBar()
self.addToolBar(toolBar)
fileMenu = self.menuBar().addMenu("&File")
shutterIcon = QIcon(
os.path.join(os.path.dirname(__file__), "shutter.svg"))
self.takePictureAction = QAction(shutterIcon,
"&Take Picture",
self,
shortcut="Ctrl+T",
triggered=self.takePicture)
self.takePictureAction.setToolTip("Take Picture")
fileMenu.addAction(self.takePictureAction)
toolBar.addAction(self.takePictureAction)
exitAction = QAction(QIcon.fromTheme("application-exit"),
"E&xit",
self,
shortcut="Ctrl+Q",
triggered=self.close)
fileMenu.addAction(exitAction)
aboutMenu = self.menuBar().addMenu("&About")
aboutQtAction = QAction("About &Qt", self, triggered=qApp.aboutQt)
aboutMenu.addAction(aboutQtAction)
self.tabWidget = QTabWidget()
self.setCentralWidget(self.tabWidget)
self.cameraViewfinder = QCameraViewfinder()
self.camera.setViewfinder(self.cameraViewfinder)
self.tabWidget.addTab(self.cameraViewfinder, "Viewfinder")
if self.camera.status() != QCamera.UnavailableStatus:
name = self.cameraInfo.description()
self.setWindowTitle("PySide2 Camera Example (" + name + ")")
self.statusBar().showMessage("Starting: '" + name + "'", 5000)
self.camera.start()
else:
self.setWindowTitle("PySide2 Camera Example")
self.takePictureAction.setEnabled(False)
self.statusBar().showMessage("Camera unavailable", 5000)
def nextImageFileName(self):
picturesLocation = QStandardPaths.writableLocation(
QStandardPaths.PicturesLocation)
dateString = QDate.currentDate().toString("yyyyMMdd")
pattern = picturesLocation + "/pyside2_camera_" + dateString + "_{:03d}.jpg"
n = 1
while True:
result = pattern.format(n)
if not os.path.exists(result):
return result
n = n + 1
return None
def takePicture(self):
self.currentPreview = QImage()
self.camera.searchAndLock()
self.imageCapture.capture(self.nextImageFileName())
self.camera.unlock()
def imageCaptured(self, id, previewImage):
self.currentPreview = previewImage
def imageSaved(self, id, fileName):
index = self.tabWidget.count()
imageView = ImageView(self.currentPreview, fileName)
self.tabWidget.addTab(imageView, "Capture #{}".format(index))
self.tabWidget.setCurrentIndex(index)
class ImportSlipDialog(QDialog, Ui_ImportSlipDlg):
qr_data_available = Signal(str)
qr_data_validated = Signal()
json_data_available = Signal()
OPERATION_PURCHASE = 1
OPERATION_RETURN = 2
QR_pattern = "^t=(.*)&s=(.*)&fn=(.*)&i=(.*)&fp=(.*)&n=(.*)$"
timestamp_patterns = [
'yyyyMMddTHHmm', 'yyyyMMddTHHmmss', 'yyyy-MM-ddTHH:mm',
'yyyy-MM-ddTHH:mm:ss'
]
def __init__(self, parent):
QDialog.__init__(self, parent=parent)
self.setupUi(self)
self.initUi()
self.model = None
self.delegate = []
self.CameraGroup.setVisible(False)
self.cameraActive = False
self.camera = None
self.img_capture = None
self.QR_data = ''
self.slip_json = None
self.slip_lines = None
self.slipsAPI = SlipsTaxAPI()
self.qr_data_available.connect(self.parseQRdata)
self.LoadQRfromFileBtn.clicked.connect(self.loadFileQR)
self.GetQRfromClipboardBtn.clicked.connect(self.readClipboardQR)
self.GetQRfromCameraBtn.clicked.connect(self.readCameraQR)
self.StopCameraBtn.clicked.connect(self.closeCamera)
self.GetSlipBtn.clicked.connect(self.downloadSlipJSON)
self.LoadJSONfromFileBtn.clicked.connect(self.loadFileSlipJSON)
self.AddOperationBtn.clicked.connect(self.addOperation)
self.ClearBtn.clicked.connect(self.clearSlipData)
self.AssignCategoryBtn.clicked.connect(self.recognizeCategories)
self.AssignCategoryBtn.setEnabled(dependency_present(['tensorflow']))
def closeEvent(self, arg__1):
if self.cameraActive:
self.closeCamera()
def initUi(self):
self.SlipAmount.setText('')
self.FN.setText('')
self.FD.setText('')
self.FP.setText('')
self.SlipType.setCurrentIndex(0)
#------------------------------------------------------------------------------------------
# Loads graphics file and tries to read QR-code from it.
# Assignes self.QR_data after successful read and emit signal qr_data_available
@Slot()
def loadFileQR(self):
self.initUi()
qr_file, _filter = \
QFileDialog.getOpenFileName(self, g_tr('ImportSlipDialog', "Select file with QR code"),
".", "JPEG images (*.jpg);;PNG images (*.png)")
if qr_file:
barcodes = pyzbar.decode(Image.open(qr_file),
symbols=[pyzbar.ZBarSymbol.QRCODE])
if barcodes:
self.qr_data_available.emit(barcodes[0].data.decode('utf-8'))
else:
logging.warning('ImportSlipDialog',
"No QR codes were found in file")
#------------------------------------------------------------------------------------------
# Qt operates with QImage class while pyzbar need PIL.Image as input
# So, we first need to save QImage into the buffer and then read PIL.Image out from buffer
# Returns: True if QR found, False if no QR found
# Emits: qr_data_available(str: qr_data) if QR found
def readImageQR(self, image):
buffer = QBuffer()
buffer.open(QBuffer.ReadWrite)
image.save(buffer, "BMP")
pillow_image = Image.open(io.BytesIO(buffer.data()))
barcodes = pyzbar.decode(pillow_image,
symbols=[pyzbar.ZBarSymbol.QRCODE])
if barcodes:
self.qr_data_available.emit(barcodes[0].data.decode('utf-8'))
return True
else:
return False
@Slot()
def readClipboardQR(self):
self.initUi()
if not self.readImageQR(QApplication.clipboard().image()):
logging.warning('ImportSlipDialog',
"No QR codes found in clipboard")
@Slot()
def readCameraQR(self):
self.initUi()
if len(QCameraInfo.availableCameras()) == 0:
logging.warning(
g_tr('ImportSlipDialog', "There are no cameras available"))
return
self.cameraActive = True
self.CameraGroup.setVisible(True)
self.SlipDataGroup.setVisible(False)
camera_info = QCameraInfo.defaultCamera()
logging.info(
g_tr('ImportSlipDialog',
"Read QR with camera: " + camera_info.deviceName()))
self.camera = QCamera(camera_info)
self.camera.errorOccurred.connect(self.onCameraError)
self.img_capture = QCameraImageCapture(self.camera)
self.img_capture.setCaptureDestination(
QCameraImageCapture.CaptureToBuffer)
self.img_capture.setBufferFormat(QVideoFrame.Format_RGB32)
self.img_capture.error.connect(self.onCameraCaptureError)
self.img_capture.readyForCaptureChanged.connect(self.onReadyForCapture)
self.img_capture.imageAvailable.connect(self.onCameraImageReady)
self.camera.setViewfinder(self.Viewfinder)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.camera.start()
@Slot()
def closeCamera(self):
self.camera.stop()
self.camera.unload()
self.CameraGroup.setVisible(False)
self.SlipDataGroup.setVisible(True)
self.img_capture = None
self.camera = None
self.cameraActive = False
@Slot()
def onCameraError(self, error):
logging.error(
g_tr(
'ImportSlipDialog', "Camera error: " + str(error) + " / " +
self.camera.errorString()))
@Slot()
def onCameraCaptureError(self, _id, error, msg):
logging.error(
g_tr('ImportSlipDialog',
"Camera error: " + str(error) + " / " + msg))
#----------------------------------------------------------------------
# This event happens once upon camera start - it triggers first capture
# Consequent captures will be initiated after image processing in self.onCameraImageReady
@Slot()
def onReadyForCapture(self):
self.camera.searchAndLock()
self.img_capture.capture()
self.camera.unlock()
#----------------------------------------------------------------------
# Try to decode QR from captured frame
# Close camera if decoded successfully otherwise try to capture again
def onCameraImageReady(self, _id, captured_image):
if self.readImageQR(captured_image.image()):
self.closeCamera()
else:
QThread.sleep(1)
self.camera.searchAndLock()
self.img_capture.capture()
self.camera.unlock()
#-----------------------------------------------------------------------------------------------
# Check if available QR data matches with self.QR_pattern
# Emits qr_data_validated if match found. Otherwise shows warning message but allows to proceed
@Slot()
def parseQRdata(self, qr_data):
self.QR_data = qr_data
logging.info(g_tr('ImportSlipDialog', "QR: " + self.QR_data))
parts = re.match(self.QR_pattern, qr_data)
if not parts:
logging.warning(
g_tr(
'ImportSlipDialog',
"QR available but pattern isn't recognized: " +
self.QR_data))
for timestamp_pattern in self.timestamp_patterns:
datetime = QDateTime.fromString(parts.group(1), timestamp_pattern)
if datetime.isValid():
self.SlipTimstamp.setDateTime(datetime)
self.SlipAmount.setText(parts.group(2))
self.FN.setText(parts.group(3))
self.FD.setText(parts.group(4))
self.FP.setText(parts.group(5))
self.SlipType.setCurrentIndex(int(parts.group(6)) - 1)
self.qr_data_validated.emit()
def downloadSlipJSON(self):
timestamp = self.SlipTimstamp.dateTime().toSecsSinceEpoch()
attempt = 0
while True:
result = self.slipsAPI.get_slip(timestamp,
float(self.SlipAmount.text()),
self.FN.text(), self.FD.text(),
self.FP.text(),
self.SlipType.currentIndex() + 1)
if result != SlipsTaxAPI.Pending:
break
if attempt > 5:
logging.warning(
g_tr('ImportSlipDialog', "Max retry count exceeded."))
break
attempt += 1
time.sleep(0.5) # wait half a second before next attempt
if result == SlipsTaxAPI.Success:
self.slip_json = self.slipsAPI.slip_json
self.parseJSON()
@Slot()
def loadFileSlipJSON(self):
json_file, _filter = \
QFileDialog.getOpenFileName(self, g_tr('ImportSlipDialog', "Select file with slip JSON data"),
".", "JSON files (*.json)")
if json_file:
with open(json_file) as f:
self.slip_json = json.load(f)
self.parseJSON()
def parseJSON(self):
# Slip data might be in a root element or in ticket/document/receipt
if 'ticket' in self.slip_json:
sub = self.slip_json['ticket']
if 'document' in sub:
sub = sub['document']
if 'receipt' in sub:
slip = sub['receipt']
else:
logging.error(
g_tr('ImportSlipDialog',
"Can't find 'receipt' tag in json 'document'"))
return
else:
logging.error(
g_tr('ImportSlipDialog',
"Can't find 'document' tag in json 'ticket'"))
return
else:
slip = self.slip_json
# Get operation type
operation = 0
if 'operationType' in slip:
operation = int(slip['operationType'])
else:
logging.error(
g_tr('ImportSlipDialog',
"Can't find 'operationType' tag in json 'ticket'"))
return
# Get shop name
shop_name = ''
if 'user' in slip:
shop_name = self.SlipShopName.setText(slip['user'])
if (not shop_name) and ('userInn' in slip):
shop_name = self.slipsAPI.get_shop_name_by_inn(slip['userInn'])
self.SlipShopName.setText(shop_name)
peer_id = self.match_shop_name(self.SlipShopName.text())
if peer_id is not None:
self.PeerEdit.selected_id = peer_id
try:
self.slip_lines = pd.DataFrame(slip['items'])
except:
return
# Get date from timestamp
if 'dateTime' in slip:
slip_datetime = QDateTime()
slip_datetime.setSecsSinceEpoch(int(slip['dateTime']))
self.SlipDateTime.setDateTime(slip_datetime)
# Convert price to roubles
self.slip_lines['price'] = self.slip_lines['price'] / 100
if operation == self.OPERATION_PURCHASE:
self.slip_lines['sum'] = -self.slip_lines['sum'] / 100
elif operation == self.OPERATION_RETURN:
self.slip_lines['sum'] = self.slip_lines['sum'] / 100
else:
logging.error(
g_tr('ImportSlipDialog', "Unknown operation type ") +
f"{operation}")
return
# Use quantity if it differs from 1 unit value
self.slip_lines.loc[self.slip_lines['quantity'] != 1, 'name'] = \
self.slip_lines.agg('{0[name]} ({0[quantity]:g} x {0[price]:.2f})'.format, axis=1)
# Assign empty category
self.slip_lines['category'] = 0
self.slip_lines['confidence'] = 1
# Assign empty tags
self.slip_lines['tag'] = None
self.slip_lines = self.slip_lines[[
'name', 'category', 'confidence', 'tag', 'sum'
]]
self.model = PandasLinesModel(self.slip_lines)
self.LinesTableView.setModel(self.model)
self.delegate = SlipLinesDelegate(self.LinesTableView)
for column in range(self.model.columnCount()):
if column == 0:
self.LinesTableView.horizontalHeader().setSectionResizeMode(
column, QHeaderView.Stretch)
elif column == 1:
self.LinesTableView.setColumnWidth(column, 200)
elif column == 2:
self.LinesTableView.setColumnHidden(column, True)
else:
self.LinesTableView.setColumnWidth(column, 100)
self.LinesTableView.setItemDelegateForColumn(column, self.delegate)
font = self.LinesTableView.horizontalHeader().font()
font.setBold(True)
self.LinesTableView.horizontalHeader().setFont(font)
self.LinesTableView.show()
def addOperation(self):
if self.AccountEdit.selected_id == 0:
logging.warning(
g_tr('ImportSlipDialog',
"Not possible to import slip: no account set for import"))
return
if self.PeerEdit.selected_id == 0:
logging.warning(
g_tr(
'ImportSlipDialog',
"Not possible to import slip: can't import: no peer set for import"
))
return
if self.slip_lines[self.slip_lines['category'] == 0].shape[0] != 0:
logging.warning(
g_tr(
'ImportSlipDialog',
"Not possible to import slip: some categories are not set")
)
return
query = executeSQL(
"INSERT INTO actions (timestamp, account_id, peer_id) "
"VALUES (:timestamp, :account_id, :peer_id)",
[(":timestamp", self.SlipDateTime.dateTime().toSecsSinceEpoch()),
(":account_id", self.AccountEdit.selected_id),
(":peer_id", self.PeerEdit.selected_id)])
pid = query.lastInsertId()
# update mappings
_ = executeSQL(
"INSERT INTO map_peer (value, mapped_to) VALUES (:peer_name, :peer_id)",
[(":peer_name", self.SlipShopName.text()),
(":peer_id", self.PeerEdit.selected_id)])
for index, row in self.slip_lines.iterrows():
_ = executeSQL(
"INSERT INTO action_details (pid, category_id, tag_id, amount, note) "
"VALUES (:pid, :category_id, :tag_id, :amount, :note)",
[(":pid", pid), (":category_id", row['category']),
(":tag_id", row['tag']), (":amount", row['sum']),
(":note", row['name'])])
# update mappings
_ = executeSQL(
"INSERT INTO map_category (value, mapped_to) VALUES (:item_name, :category_id)",
[(":item_name", row['name']),
(":category_id", row['category'])],
commit=True)
self.clearSlipData()
def clearSlipData(self):
self.QR_data = ''
self.slip_json = None
self.slip_lines = None
self.LinesTableView.setModel(None)
self.initUi()
def match_shop_name(self, shop_name):
return readSQL("SELECT mapped_to FROM map_peer WHERE value=:shop_name",
[(":shop_name", shop_name)])
@Slot()
def recognizeCategories(self):
self.slip_lines['category'], self.slip_lines['confidence'] = \
recognize_categories(self.slip_lines['name'].tolist())
self.model.dataChanged.emit(None, None) # refresh full view
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super(MainWindow, self).__init__(*args, **kwargs)
self.available_cameras = QCameraInfo.availableCameras()
if not self.available_cameras:
pass #quit
self.status = QStatusBar()
self.setStatusBar(self.status)
self.save_path = ""
self.viewfinder = QCameraViewfinder()
self.viewfinder.show()
self.setCentralWidget(self.viewfinder)
# Set the default camera.
self.select_camera(0)
# Setup tools
camera_toolbar = QToolBar("Camera")
camera_toolbar.setIconSize(QSize(14, 14))
self.addToolBar(camera_toolbar)
photo_action = QAction(QIcon(os.path.join('images', 'camera-black.png')), "Take photo...", self)
photo_action.setStatusTip("Take photo of current view")
photo_action.triggered.connect(self.take_photo)
camera_toolbar.addAction(photo_action)
change_folder_action = QAction(QIcon(os.path.join('images', 'blue-folder-horizontal-open.png')), "Change save location...", self)
change_folder_action.setStatusTip("Change folder where photos are saved.")
change_folder_action.triggered.connect(self.change_folder)
camera_toolbar.addAction(change_folder_action)
camera_selector = QComboBox()
camera_selector.addItems([c.description() for c in self.available_cameras])
camera_selector.currentIndexChanged.connect( self.select_camera )
camera_toolbar.addWidget(camera_selector)
self.setWindowTitle("NSAViewer")
self.show()
def select_camera(self, i):
self.camera = QCamera(self.available_cameras[i])
self.camera.setViewfinder(self.viewfinder)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.camera.error.connect(lambda: self.alert(self.camera.errorString()))
self.camera.start()
self.capture = QCameraImageCapture(self.camera)
self.capture.error.connect(lambda i, e, s: self.alert(s))
self.capture.imageCaptured.connect(lambda d, i: self.status.showMessage("Image %04d captured" % self.save_seq))
self.current_camera_name = self.available_cameras[i].description()
self.save_seq = 0
def take_photo(self):
timestamp = time.strftime("%d-%b-%Y-%H_%M_%S")
self.capture.capture(os.path.join(self.save_path, "%s-%04d-%s.jpg" % (
self.current_camera_name,
self.save_seq,
timestamp
)))
self.save_seq += 1
def change_folder(self):
path = QFileDialog.getExistingDirectory(self, "Snapshot save location", "")
if path:
self.save_path = path
self.save_seq = 0
def alert(self, s):
"""
Handle errors coming from QCamera dn QCameraImageCapture by displaying alerts.
"""
err = QErrorMessage(self)
err.showMessage(s)
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.cameraInfo = QCameraInfo.defaultCamera()
self.camera = QCamera(self.cameraInfo)
self.camera.setCaptureMode(QCamera.CaptureStillImage)
self.imageCapture = QCameraImageCapture(self.camera)
self.imageCapture.imageCaptured.connect(self.imageCaptured)
self.imageCapture.imageSaved.connect(self.imageSaved)
self.currentPreview = QImage()
toolBar = QToolBar()
self.addToolBar(toolBar)
fileMenu = self.menuBar().addMenu("&File")
shutterIcon = QIcon(os.path.join(os.path.dirname(__file__),
"shutter.svg"))
self.takePictureAction = QAction(shutterIcon, "&Take Picture", self,
shortcut="Ctrl+T",
triggered=self.takePicture)
self.takePictureAction.setToolTip("Take Picture")
fileMenu.addAction(self.takePictureAction)
toolBar.addAction(self.takePictureAction)
exitAction = QAction(QIcon.fromTheme("application-exit"), "E&xit",
self, shortcut="Ctrl+Q", triggered=self.close)
fileMenu.addAction(exitAction)
aboutMenu = self.menuBar().addMenu("&About")
aboutQtAction = QAction("About &Qt", self, triggered=qApp.aboutQt)
aboutMenu.addAction(aboutQtAction)
self.tabWidget = QTabWidget()
self.setCentralWidget(self.tabWidget)
self.cameraViewfinder = QCameraViewfinder()
self.camera.setViewfinder(self.cameraViewfinder)
self.tabWidget.addTab(self.cameraViewfinder, "Viewfinder")
if self.camera.status() != QCamera.UnavailableStatus:
name = self.cameraInfo.description()
self.setWindowTitle("PySide2 Camera Example (" + name + ")")
self.statusBar().showMessage("Starting: '" + name + "'", 5000)
self.camera.start()
else:
self.setWindowTitle("PySide2 Camera Example")
self.takePictureAction.setEnabled(False)
self.statusBar().showMessage("Camera unavailable", 5000)
def nextImageFileName(self):
picturesLocation = QStandardPaths.writableLocation(QStandardPaths.PicturesLocation)
dateString = QDate.currentDate().toString("yyyyMMdd")
pattern = picturesLocation + "/pyside2_camera_" + dateString + "_{:03d}.jpg"
n = 1
while True:
result = pattern.format(n)
if not os.path.exists(result):
return result
n = n + 1
return None
def takePicture(self):
self.currentPreview = QImage()
self.camera.searchAndLock()
self.imageCapture.capture(self.nextImageFileName())
self.camera.unlock()
def imageCaptured(self, id, previewImage):
self.currentPreview = previewImage
def imageSaved(self, id, fileName):
index = self.tabWidget.count()
imageView = ImageView(self.currentPreview, fileName)
self.tabWidget.addTab(imageView, "Capture #{}".format(index))
self.tabWidget.setCurrentIndex(index)
class CameraMainWin(QtWidgets.QMainWindow, ui_cameraWin.Ui_MainWindow):
"""程序的主窗体逻辑"""
def __init__(self, img_rec: ImageRecognition, res_wid: ResultWid,
sig_res_wid: SingleResultWid):
super(CameraMainWin, self).__init__()
self.setupUi(self)
# 设置图像处理实例和跳转实例
self.img_rec = img_rec
self.res_wid = res_wid
self.sig_res_wid = sig_res_wid
# camera设置
self.camera = QCamera()
self.camera.setCaptureMode(QCamera.CaptureViewfinder)
self.cameraOpened = False # 设置相机打开状态为未打开
# 设置取景器分辨率
view_finder_settings = QCameraViewfinderSettings()
self.camera.setViewfinderSettings(view_finder_settings)
# 初始化取景器
self.viewCamera = QtMultimediaWidgets.QCameraViewfinder(self)
self.camera.setViewfinder(self.viewCamera)
self.cameraLayout.addWidget(self.viewCamera) # 取景器放置到预留的布局中
# 设置图像捕获
self.capImg = QCameraImageCapture(self.camera)
self.capImg.setCaptureDestination(QCameraImageCapture.CaptureToBuffer)
self.capImg.imageCaptured.connect(self._process_captured_image)
# 绑定按钮槽函数
self.cameraButton.clicked.connect(self.switch_camera)
self.captureButton.clicked.connect(self.take_pic)
self.loadButton.clicked.connect(self.load_file)
self.reconitionButton.clicked.connect(self.load_path)
self.chg_mod_Button.clicked.connect(self.change_model)
def switch_camera(self):
"""槽函数，开关摄像头"""
if not self.cameraOpened:
self.camera.start()
self.cameraOpened = True
self.cameraButton.setText("关闭摄像头")
else:
self.camera.stop()
self.cameraOpened = False
self.cameraButton.setText("打开摄像头")
def take_pic(self):
"""槽函数，捕获摄像头图像"""
self.capImg.capture()
def _process_captured_image(self, _, img):
"""
图像捕获时执行
打开识别结果窗体并反馈预测结果
:param img: 摄像头捕获到的QImage格式图片
:return:
"""
self.sig_res_wid.show()
self.sig_res_wid.image_predict(img)
def load_file(self):
"""槽函数，打开单个图片文件识别并弹窗反馈"""
img_path, _ = QFileDialog.getOpenFileName(
self, '选择图片', 'Images', 'Image files(*.jpg *.gif *.png)')
if img_path == '':
return
else:
q_image = QImage(img_path)
self.sig_res_wid.show()
self.sig_res_wid.image_predict(q_image)
def load_path(self):
"""槽函数，打开图片文件夹识别并弹窗反馈"""
dir_path = QFileDialog.getExistingDirectory(self, '选择图片', 'Images')
if dir_path == '':
return
else:
self.img_rec.set_images_path(dir_path)
self.res_wid.show()
self.res_wid.image_predict()
def change_model(self):
"""槽函数，打开模型文件夹识别并弹窗反馈"""
mod_path, _ = QFileDialog.getOpenFileName(self, '选择模型文件', 'Models/')
if mod_path == '':
return
else:
self.img_rec.change_model(mod_path)
