问题描述
我在插件中有一个按钮可以拍照并将其与 QGIS 中的图层特征相关联。
我的目标是选择一个要素,打开相机视图(取景器),拍照并以要素 ID 和日期时间作为文件名保存(例如 20210412-112351_223.jpg)。
为此,我使用下面的代码 based on this post。
问题是,当我在笔记本电脑中使用此插件时,拍摄的图片为 1280x720,但使用 Surface Book 3 时,结果图片为 640x320。
from PyQt5.QtWidgets import *
from PyQt5.QtMultimedia import *
from PyQt5.QtMultimediawidgets import *
from qgis.core import (QgsProject,Qgis,QgsExpressionContextUtils)
from qgis.utils import iface
import os
import time
class creaventana(QMainWindow):
def __init__(self):
super().__init__()
self.setGeometry(0,1280,720)
self.setStyleSheet("background : lightgrey;")
self.available_cameras = QCameraInfo.availableCameras()
if not self.available_cameras:
iface.messageBar().pushMessage('No hay cámaras','El dispositivo no tiene ninguna cámara',level=Qgis.Warning,duration=5)
self.status = QStatusBar()
self.status.setStyleSheet("background : white;")
self.setStatusBar(self.status)
self.viewfinder = QCameraviewfinder()
self.viewfinder.show()
self.setCentralWidget(self.viewfinder)
self.select_camera(0)
toolbar = qtoolbar("Cámara")
self.addToolBar(toolbar)
click_action = QAction("Hacer foto",self)
click_action.setStatusTip("Esto hace la foto")
click_action.setToolTip("Hacer foto")
click_action.triggered.connect(self.click_photo)
toolbar.addAction(click_action)
camera_selector = QComboBox()
camera_selector.setStatusTip("Cámara frontal / trasera")
camera_selector.setToolTip("Elegir cámara")
camera_selector.setToolTipDuration(2500)
camera_selector.addItems([camera.description()
for camera in self.available_cameras])
camera_selector.currentIndexChanged.connect(self.select_camera)
toolbar.addWidget(camera_selector)
toolbar.setStyleSheet("background : white;")
self.setwindowTitle("PyQt5 Cam")
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 error_msg,error,msg: self.alert(msg))
self.capture.imageCaptured.connect(lambda d,i: self.status.showMessage("Imagen tomada: " + str(self.save_seq)))
self.current_camera_name = self.available_cameras[i].description()
self.save_seq = 0
def click_photo(self):
individuos = QgsProject.instance().mapLayersByName('Individuos')[0]
individuoSeleccionado = individuos.selectedFeatures()
for individuo in individuoSeleccionado:
idind = individuo['id_ind']
timestamp = time.strftime('%Y%m%d-%H%M%s')
ruta = 'D:/fotos/'
self.capture.capture(os.path.join(ruta,"%s_%s.jpg" % (idind,timestamp)))
self.save_seq += 1
def alert(self,msg):
error = QErrorMessage(self)
error.showMessage(msg)
def abrecamara(self):
individuos = QgsProject.instance().mapLayersByName('Individuos')[0]
individuoSeleccionado = individuos.selectedFeatures()
cuentaIndividuoSeleccionado = len(list(individuoSeleccionado))
if cuentaIndividuoSeleccionado == 1:
ventana = creaventana()
ventana.show()
elif cuentaIndividuoSeleccionado > 1:
iface.messageBar().pushMessage('Selección','Solo puede haber un individuo seleccionado',duration=5)
elif cuentaIndividuoSeleccionado == 0:
iface.messageBar().pushMessage('Selección','Tiene que haber al menos un individuo seleccionado',duration=5)
解决方法
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