pyqt5 从图片路径or图片矩阵 读取和显示图片的方式

• 从路径读取

pixmap = QPixmap('./image.jpg')  
self.videolabel.setPixmap(pixmap)

• 直接读取图片

success, frame = self.cap.read()
cover = cv2.cvtColor(cover, cv2.COLOR_RGB2BGR)
temp_image = QImage(frame.data, cover.shape[1], cover.shape[0], 3*cover.shape[1],QImage.Format_RGB888)  #bytesPerLine=3*width
pixmap = QPixmap.fromImage(frame)
self.videolabel.setPixmap(pixmap)