Error: “Unknown Dataset Type” When Importing Custom COCO Dataset into OpenVINO™ Deep Learning Workbench (DL Workbench)

• Converted a custom model to Intermediate Representation (IR) format with precision FP32.
• Converted IR (FP32) to IR (INT8) with a not-annotated dataset and default configuration.
• Bad result when inferencing with IR (INT8).
• Created JSON file with annotations with the following format:

  {
  "images": [<images>],
  "annotations": [<annotations>]
  }

• Created custom COCO dataset.
• Failed to import custom COCO dataset to OpenVINO™ DL Workbench:

Error occurred while uploading dataset: Unknown dataset type

OpenVINO™ DL Workbench recognizes the annotated dataset as COCO dataset format by checking the JSON file.

• Create .JSON file containing the following entries:

  {
  "info": <info>,
  "images": [<images>],
  "licenses": [<licenses>],
  "annotations": [<annotations>]
  }

• Add "info" and "licenses" entries as empty list if not already available in the JSON file.
• Create COCO dataset with the following format:

  |-- val
  |-- 0001.jpg
  |-- 0002.jpg
  ...
  |-- n.jpg
  |-- annotations
  |-- instances_val.json

Refer to Dataset Types for more information regarding the various dataset use cases and dataset structures for DL Workbench.