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Power Automate
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OCR to text Image Content field

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Posted on by heywoodheywood 4

Hi, I am trying to get the Flow step "Optical Character Recognition (OCR) to Text (preview)" to work.

There are 2 fields you have to fill in, Image Source and Image Content.

When I set the Image Source to Image URL, everything is fine and my cognitive services OCR works.

The problem is when I set the Image Source to Image Content, I don't know what to put in the associated Image Content field.

I take it the Base64 image string should go in here?

Does it need any extra formatting around the Base64 string?

I've tried lost of combinations but can't get any to work.

Thanks, and apologies but I can't suss how to put a screenshot in this post.

Categories:
Building flows
I have the same question (0)
  • heywoodheywood Profile Picture
    heywoodheywood 4 on at

    Here's the screenshot - think my ad-blocker messed it up earlier.

    So it's the Image Content field I don't know how to populate.  Thanks! 

    Automate.jpg

  • Verified answer
    RayHogan Profile Picture
    RayHogan 10 on at

    You can use a base64 representation of your image, so long as the content type is application/octet-stream.

     

    Syntax:

     

    {
 "$content-type": "application/octet-stream",
 "$content": "base 64 goes here"
}

     

     

    Sample:

     

    {
 "$content-type": "application/octet-stream",
 "$content": "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"
}

     

     

    Birds eye of my Flow:

    image.png

     

    I am storing the JSON as a string variable:

    image.png

     

    And then using the JSON() function, I can insert it into my OCR action:

    image.png

     

    Final variable in my Flow was just so I could see the output of the OCR action.

     
  • heywood1 Profile Picture
    heywood1 5 on at

    Thanks Ray, I love you.

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