Tesseract - How to send input in tesseract node when we have to read data from Image

I have an image with data in it and iam trying to use tesseract node to read the data. Can you please let me know what should be input (Name ) in tesseract node and also how to load the image file to node-red inorder to send it to tesseract as input?

The node readme says you can either give the Nide a filename, or a URL, or a raw image buffer. Up to you.

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