我们从Python开源项目中，提取了以下9个代码示例，用于说明如何使用pyqtgraph.ImageItem()。
def __init__(self, video, result): self.video = video self.result = result app = pg.mkQApp() self.win = pg.GraphicsWindow(title="Live webcam") self.win.resize(640,480) box = self.win.addViewBox(lockAspect=True) box.invertY() self.vis = pg.ImageItem() box.addItem(self.vis) box = self.win.addViewBox(lockAspect=True) box.invertY() self.res = pg.ImageItem() box.addItem(self.res) self.win.show() self.lastUpdate = pg.ptime.time() self.avgFps = 0.0
def __init__(self, data, title = None, color = 'viridis', ncolors = None): #self.app = pg.QtGui.QApplication([]) #self.win = pg.GraphicsLayoutWidget() #self.win.resize(1200, 800) lut = colormap_lut(color, ncolors); self.img = pg.ImageItem() self.img.setLookupTable(lut) self.img.setLevels([0,1]) #self.plot = self.win.addPlot() self.plot = pg.plot(title = title); self.plot.addItem(self.img) #self.timer = QtCore.QTimer() #self.timer.timeout.connect(self.check_for_new_data_and_replot) #self.timer.start(100) self.img.setImage(data.T) #self.win.show()
def __init__(self, parent=None): #pyqtgraph.setConfigOptions(imageAxisOrder='row-major') super(self.__class__, self).__init__() self.setupUi(self) self.slider_spatialr.valueChanged.connect(self.runSegment) self.slider_ranger.valueChanged.connect(self.runSegment) self.slider_classes.valueChanged.connect(self.runClassification) self.imageItem = pyqtgraph.ImageItem() self.view = pyqtgraph.ViewBox() self.view.addItem(self.imageItem) #segResult is of class pyqtgraph.GraphicsView self.segResult.setCentralItem(self.view) #get file pathes with buttons self.RGBimgpathButton.clicked.connect(self.getFileRGB) self.smoothedpathButton.clicked.connect(self.getFilesmoothed) self.saveClassificationButton.clicked.connect(self.saveFileClassified) #temporary data of segmented image self.segmentedout = "data/app_segmented.tif" self.RGBimgpath = "data/test_image_cubic_resample.tif" self.smoothedpath = "data/smoothed.tif"
def update_display(self): #self.log.debug('update_display') if self.initial_scan_setup_plotting: if self.settings['show_previous_scans']: self.img_item = pg.ImageItem() self.img_items.append(self.img_item) self.img_plot.addItem(self.img_item) self.hist_lut.setImageItem(self.img_item) self.img_item.setImage(self.display_image_map[0,:,:]) x0, x1, y0, y1 = self.imshow_extent self.log.debug('update_display set bounds {} {} {} {}'.format(x0, x1, y0, y1)) self.img_item_rect = QtCore.QRectF(x0, y0, x1-x0, y1-y0) self.img_item.setRect(self.img_item_rect) self.log.debug('update_display set bounds {}'.format(self.img_item_rect)) self.initial_scan_setup_plotting = False else: #if self.settings.scan_type.val in ['raster'] kk, jj, ii = self.current_scan_index self.disp_img = self.display_image_map[kk,:,:].T self.img_item.setImage(self.disp_img, autoRange=False, autoLevels=False) self.img_item.setRect(self.img_item_rect) # Important to set rectangle after setImage for non-square pixels self.update_LUT()
def __init__(self, func): self.func = func app = pg.mkQApp() self.win = pg.GraphicsWindow(title="Bar learning") self.win.resize(800,800) self.win.addLabel("Input") self.win.addLabel("Feature") self.win.nextRow() box = self.win.addViewBox(lockAspect=True) self.input_vis = pg.ImageItem() box.addItem(self.input_vis) box = self.win.addViewBox(lockAspect=True) self.feature_vis = pg.ImageItem() box.addItem(self.feature_vis) self.win.nextRow() self.win.addLabel("Receptive fields", colspan=2) self.win.nextRow() box = self.win.addViewBox(lockAspect=True, colspan=2) self.rv_vis = pg.ImageItem() box.addItem(self.rv_vis) self.win.show()
def __init__(self): self._backgroundImage = "../roadlanes.png" self._roadLength = 5e4 self._roadWidth = self._roadLength * 663./1657 self._laneWidth = self._roadWidth / 4. self._trafficManager = None self._pw = pg.plot(pen='y', symbol='t', symbolSize=200) x = Image.open('../roadlanes.png') im = np.array(x) self._backgroundImage = pg.ImageItem(im, autoDownsample = True, autoLevels = False)
def __init__(self, sandbox, component, title='Untitled'): pg.PlotItem.__init__(self) self.title = title self.sandbox = sandbox self.component = component self.cursor = CursorRect() self.addCursor() self.setAspectLocked(True) self.setLabels( bottom=('Easting', 'm'), left=('Northing', 'm')) self.image = pg.ImageItem( None, autoDownsample=False, useOpenGL=True) self.addItem(self.image) self.title_label = pg.LabelItem( text='<span style="color: #9E9E9E;">' '%s</span>' % self.title, justify='right', size='10pt', parent=self) self.title_label.anchor( itemPos=(0., 0.), parentPos=(.01, .01)) self.title_label.setOpacity(.6) self.sandbox.sigModelUpdated.connect( self.update) self.sandbox.sources.modelAboutToBeReset.connect( self.removeSourceROIS) self.sandbox.sources.modelReset.connect( self.addSourceROIS) self.update() self.rois = [] self.addSourceROIS()
def __init__(self, model, los_arrow=False): pg.PlotWidget.__init__(self) self.model = model self.draw_time = 0. self._data = None border_pen = pg.mkPen(255, 255, 255, 50) self.image = pg.ImageItem( None, autoDownsample=False, border=border_pen, useOpenGL=True) self.setAspectLocked(True) self.plotItem.getAxis('left').setZValue(100) self.plotItem.getAxis('bottom').setZValue(100) self.setLabels( bottom=('Easting', 'm'), left=('Northing', 'm')) self.hint = { 'east': 0., 'north': 0., 'value': num.nan, 'measure': self.component.title(), 'vlength': '03', 'precision': '3', } self.hint_text = pg.LabelItem( text='', justify='right', size='8pt', parent=self.plotItem) self.hint_text.anchor( itemPos=(1., 0.), parentPos=(1., 0.)) self.hint_text.text_template =\ '<span style="font-family: monospace; color: #fff;'\ 'background-color: #000;">'\ 'East {east:08.2f} m | North {north:08.2f} m | '\ '{measure} {value:{length}.{precision}f}</span>' self.hint_text.setOpacity(.6) self.addItem(self.image) self.update() self.transFromFrame() self._move_sig = pg.SignalProxy( self.image.scene().sigMouseMoved, rateLimit=25, slot=self.mouseMoved) if los_arrow: self.addLOSArrow() # self.addIsocurve() # self.scalebar()
