Unknown layer type FusedBatchNormV3 in op model/bn_Conv1/FusedBatchNormV3

C++
1

I am trying to read a tensorflow model using readNetFromTensorflow()

I want to use specific version of opencv: 3.4.1

I have pretrained and fine tuned MobileNetV2 model.

I get below Error:

Error: Unspecified error (Unknown layer type FusedBatchNormV3 in op model/bn_Conv1/FusedBatchNormV3) in cv::dnn::experimental_dnn_v4::`anonymous-namespace’::TFImporter::populateNet

I have tested it with opencv v4.7.0 and it works fine, but there is a problem with opencv v3.4.1

Can somebody help me with this? Thanks.

2

you cannot turn the clock back.
tell us, why you want to use such an outdated version, maybe we can find a better workaround than that.

3

I am working on an application that uses this older version of OpenCV, migrating the whole application to the latest version of opencv would take a significant amount of time and effort.

5

I have trained a model in python tensorflow 2.5.0.
(from your prev. post)

that did not exist 5 years ago.
you probably have to use tf code from that time, too ;(

6

true, lazybones :wink:
however, we can probably help much better, getting that done, instead of trying to maintain your ‘technical debt’

7

I fixed the issue by installing OpenCV 3.4.15 version. It did not require any code changes to the existing application.

Anyways thanks for your help. :slight_smile: