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CustomVision PredictImageURL fails - no default iteration

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Posted on by Miklos

Hi Community,

I try to use CustomVision.PredictImageURL(projectID,Url). In this case I get an error message: "Project has no default iteration". I cannot find as of today how to set a default iteration for a CV project. ( I could see older videos on the internet, where it was an option, which is not visible today)

The CustomVision.PredictImageURL(projectID,Url, {iterationId:Text}) has a third optional parameter, but I cannot find how to specifiy it...

Any hint how to move forward?

Thanks, Miklos

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Building Power Apps

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v-xida-msft Microsoft Employee on at

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Hi @Miklos ,

Could you please share a bit more about your issue?

Based on the error message that you mentioned, it seems to tell that you do not set a Default iteration for your CV project.

Please check and see if the following article would help in your scenario:

https://github.com/Azure/azure-sdk-for-net/issues/4556

Please check if you have specified one iteration of your CV Project as the default iteration.

In addition, there are some updates on Custom Vision API recently (Custom Vision 2.x -> Custom Vision 3.0). Within the Custom Vision API 3.0, the Default iterations have been removed in favor of a publish / unpublish a named iteration.

Please check the following article for more details about the updates in Custom Vision API:

https://docs.microsoft.com/en-us/azure/cognitive-services/Custom-Vision-Service/update-application-to-3.0-sdk

If the issue still exists, you could consider take a try to create a custom connector based on the Custom Vision API within your PowerApps to achieve your needs.

More details about creating custom connector in PowerApps, please check the following article:

https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/register-custom-api

https://www.youtube.com/watch?v=dBCS1nPsDiE

More details about Custom Vision API, please check the following article:

https://southcentralus.dev.cognitive.microsoft.com/docs/services/Custom_Vision_Prediction_3.0/operations/5c82db60bf6a2b11a8247c15

Best regards,
Miklos 24 on at

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Hi Kris,

Thanks for your pieces of advices. I will check them and come back here with the results.

Miklos
annelirymert Microsoft Employee on at

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I'm experiencing the same issue on PredictImage from PowerApps. +1 on updates!
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Miklos 24 on at

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Hi Team,

First I created a Custom Connector with the Postman approach, it works.

Last, but not least, thanks to PowerApps guru @MichalRok , if you use the South Central US region, you can specify the optional IterationID parameter the following way:
1/ Get the IterationID:
Open your published project at www.customvision.ai and go to the PERFORMANCE tab
Move the mouse over one of your performance tag
You should see an URL including the Iteration ID
For example: https://www.customvision.ai/projects/12345678-38a5-4e00-8a6b-4c3643fa5352#/manage?iterationId=3e1170e1-b52f-45cb-9356-6d5b995f8c47&tagIds=55dcfa89-4fc4-4b26-b5ae-2498cad537a3

2/ Specify the Iteration ID within the CustomVision connector the following way assuming the above iteration ID:
CustomVision.PredictImageURL("projectid","imageurl",{iterationId:"3e1170e1-b52f-45cb-9356-6d5b995f8c47"})

Hope it helps.
Miklos