The Image Source dialog on the Setup tab lets you choose images
from different sources:
- If your image has already been opened in the Graphics Window,
you can activate Graphics Window to continue working with the currently displayed image.
- You can load an image file by activating Image File or choosing Load Image from the menu File and
the toolbar, respectively, and either typing in the image path or
using the Browse button on the right to select an
image from a file.
- Another option is to activate the radio button for
the 图像采集助手. Being connected to this
assistant, you can
acquire the image you want to use for OCR and you can even choose to work with a Live image.
The same operations can be
performed by clicking the Snap or Live symbols in the toolbar.
Note that the OCR works on a single channel image. For color RGB images, the red
channel will be used. A color transformation can be performed with the
operator trans_from_rgb later in the generated code.
When you have loaded your image, you can continue to create an ROI.