PyQt5显示图片

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redImg=QImage()
QImage.load(redImg,'path',format='png')
self.label_3.setPixmap(QtGui.QPixmap(redImg))

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img_path='path'
self.showImage = QPixmap(img_path).scaled(self.label_3.width(), self.label_3.height())  # 适应窗口大小
self.label_3.setPixmap(self.showImage)  # 显示图片

image=cv2.imread('path')
def showImageRed(self):
	self.image_1 = self.image
	self.image_1 = QtGui.QImage(self.image_1.data, 		self.image_1.shape[1],self.image_1.shape[0],QtGui.QImage.Format_RGB888).rgbSwapped()
	self.label_3.setPixmap(QtGui.QPixmap.fromImage(self.image_1))

第三种方法可能会有斜影子，修改成下方这样

def showImageRed(self):
    self.image_1 = self.image
    self.image_1 = QtGui.QImage(self.image_1.data, self.image_1.shape[1], self.image_1.shape[0],self.image_1.shape[1]*3, QtGui.QImage.Format_RGB888).rgbSwapped()
    self.label_3.setPixmap(QtGui.QPixmap.fromImage(self.image_1))

感觉应该是三通道问题