To check the status of your custom classifier, do:
curl -X GET "https://gateway-a.watsonplatform.net/visual-recognition/api/v3/classifiers/{classifier_id}?api_key={api-key}&version=2016-05-20"
classifier_id should be the unique ID returned when you created your classifier
api_key should be your API key
You should do this repeatedly until you see a status of ready
To classify your card, use this curl:
curl -X POST -F "images_file=@king.jpg" -F "parameters=@myparams.json" "https://gateway-a.watsonplatform.net/visual-recognition/api/v3/classify?api_key={API_KEY}&version=2016-05-20"
myparams.json should look something like:
{
"classifier_ids": ["cards_xxxxxx", "default"]
}
cards_xxxxxx should be your classifier ID
api_key should be your API key
images_file should be the path to the file you want to classify