Convert pb to uff

Hello, I am new to Jetson Nano. I used the MobileNet SSD V2 model after training and saved the ckpt file, and then converted the converted PB frozen file to UFF file, but the final result showed IndexError: List index out of range, how to solve it?
My Jetpack is 4.2.3 and tensorrt is (18.5 MB)

Hi @sheena40920
UFF and Caffe Parser have been deprecated from TensorRT 7 onwards, hence request you to try ONNX parser.
Please check the below link for the same.


Ok i’ll try it, thank you for your reply

Sorry, I would like to ask, if I forget to update tensorrt to version 7.2 in github, do I have to follow the latest version to comply with the jetpack before it can be used?

Sorry, I would like to ask, before I tried the conversion of pb to onnx using the following URL GitHub - onnx/tensorflow-onnx: Convert TensorFlow, Keras and Tflite models to ONNX
, I have succeeded, but when I inference, it shows that uint8 is not supported. Is there any way to solve it?model.onnx (17.9 MB)

Hi @sheena40920 ,

Please refer to below link:


Sorry, I would like to ask when I was doing training, I did graph_rewriter {in the ssd_mobilenet_v2_quantized_300x300_coco.config file
quantization {
delay: 48000
weight_bits: 8
activation_bits: 8
}In the quantization section of this paragraph, the uint 8 appeared when I converted it into the onnx file. What is the reason?ssd_mobilenet_v2_quantized_300x300_coco.config (4.9 KB)

Hi @sheena40920,

Could you please let us know how are you converting to ONNX model, we recommend you to follow GitHub - onnx/tensorflow-onnx: Convert TensorFlow, Keras and Tflite models to ONNX

Thank you.

Yes, I have always used this github to convert onnx, but the type of my input is still uint8
model.onnx (17.9 MB)

Hi @sheena40920,

Looks like this is known issue. Natively TensorRT doesn’t support UINT8 data type. When we generate ONNX model, observed data type is UINT8, modifying ONNX model may be error prone.

Please refer following, you may find useful.

If you still need further assistance we recommend you to post your query on Jetson forum to get better help.

Thank you.