Hi All,
I have some issues with color using pyqtgraph.
I have a basic code for displaying a RGBA image.
I am expecting to have a color image but instead I have a graylevel image
Do you see an obvious explanation to this behavior in this code ?
from pyqtgraph.Qt import QtCore, QtGui
import pyqtgraph as pg
import cv2
pg.setConfigOptions(imageAxisOrder='row-major')
app = QtGui.QApplication([])
## Create window with GraphicsView widget
win = pg.GraphicsLayoutWidget()
win.show() ## show widget alone in its own window
win.setWindowTitle('pyqtgraph example: ImageItem')
view = win.addViewBox()
view.invertY(True)
## lock the aspect ratio so pixels are always square
view.setAspectLocked(True)
## Create image item
l_img_item = pg.ImageItem(border='w')
view.addItem(l_img_item)
l_img_item.setCompositionMode(QtGui.QPainter.CompositionMode_Plus)
# l_img_item.setZValue(10)
# l_img_item.setOpacity(0.5)
l_image = cv2.imread('_test.png')
l_image = cv2.cvtColor(l_image, cv2.COLOR_RGBA2RGB)
## Set initial view bounds
view.setRange(QtCore.QRectF(0, 0, 375, 400))
# timer = QtCore.QTimer()
# timer.timeout.connect(self._update)
# timer.start(50)
l_img_item.setImage(l_image, autoLevels=False)
l_img_item.setCompositionMode(QtGui.QPainter.CompositionMode_Plus)
app.exec_()
Thanks for your help
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