Data Collector

Enable Data Collector

Data collector (bn_data_collector) is useful if you want to store the snapshot and inference results for data analysis.

Steps to enable data collector:

1. Prepare config file including the topic where AI engine will send inference results to:

   For the default detection engine, you can create a data_collector.json

   {
       "berrynet/engine/tflitedetector/result": "self.update"
   }
   

2. Run data collector:

   $ bn_data_collector --data-dirpath /tmp/bn-outdir --topic-config data_collector.json
   

3. Check collected results in the indicated directory:

   Every inference result will be saved to two files:

   • image, w/ or w/o inference result overlay, depending on the output parameter set to AI engine.
   • text in JSON format, w/o image string in base64 format.

   $ ls /tmp/bn-outdir
   2019-05-26T13:33:52.277898.jpg
   2019-05-26T13:33:52.277898.json
   ...