I'm training a deep learning model for custom object detection using TensorFlow 1.15 on Google colab. I'm using ssd_mobilenet_v2_quantized_coco. After some training (20k steps) with losses 1.5 ~ 2.5, I generated the inference graph and checked the training. But the results are showing "N/A" on some images.
I've already checked the label_map.pbtxt file and config file, both are okay. labelfile config
The first two labels are showing in results i.e., pedestrian_crossing and turn right. But the last three are showing as N/A. Here's a result image: result
I'm following this tutorial: https://medium.com/geekculture/training-a-model-for-custom-object-detection-using-tensorflow-1-x-on-google-colab-564d3e62e9ef