Porting code from 3.2 to 3.3

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Hello everybody,

I updated OpenCV to the last version and I have a problem about the porting of a code realized with the version 3.2.

With 3.2, I use the Blob class:

Blob inputBlob = Blob(face_resized);

But with the 3.3, there is no Blob class in dnn. How can I change my code with the new version?

Thanks for your help.