Image services on the API Business Hub

In order to consume the Image Classifier Service SAP Leonardo Machine Learning Foundation service, you will first need to get the service URI, request and response parameters.

Go to https://api.sap.com/.

Then you will be able to search for the SAP Leonardo Machine Learning - Functional Services, then click on the package found.

Select Image Classifier Service.

You can also access the page directly from the following address:

• https://api.sap.com/api/image_classification_api/resource

As you can notice the API has only one resource (or service): /inference_sync.

Now click on the /inference_sync link to expand the section.

Note: the term inference refers to the application phase (scoring) an existing model (as opposed to the training or inception phase) and sync for synchronous.

As stated in the description, the service accepts either:

• an archive file with a zip/tar extensions containing multiple image files
• a single image
• a list of image as input

The service returns a classification list with its scores (confidence).

The supported image formats are JPEG, PNG, TIF or BMP (the actual content format is validated, so renaming files may simply not work).

The input file, files or archive file will be sent as a FormData query parameter in the service request.

In the top right corner of the page, click on the Log On button.

You will be prompted for your SAP Cloud Platform credentials.

Scroll down to the Parameters section and click on the Choose File button next to files parameter.

Select any image file on your local machine (and if you are missing some inspiration, use Google Search to search for duck images).

Make sure you pick a JPEG, PNG, TIF or BMP format with a resolution below 1024 by 1024 pixels else you will receive a 400 error response.

Now, scroll down and click on Try out.

In the Response Body, you will get the top 5 classes/label with an associated score (that sums up to 1).

{
  "_id": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx",
  "predictions": [
    {
      "name": "Duck.jpeg",
      "results": [
        {
          "label": "drake",
          "score": 0.999675
        },
        {
          "label": "goose",
          "score": 0.000313
        },
        {
          "label": "European gallinule",
          "score": 0.000004
        },
        {
          "label": "toucan",
          "score": 0.000003
        },
        {
          "label": "red-breasted merganser",
          "score": 0.000002
        }
      ]
    }
  ],
  "processed_time": "Mon, 31 Jul 2017 13:03:29 GMT",
  "request": {
    "files": [
      "Duck.jpeg"
    ],
    "options": {},
    "tenantName": "imgclassif-tech-user",
    "texts": []
  },
  "status": "DONE",
  "tenantName": "imgclassif-tech-user"
}

Provide an answer to the question below then click on Validate.

You can also try the following Machine Learning Functional Services consuming images:

• the Image Feature Extraction API
• the Product Image Classification API

Alternatively, you can try to compress into a zip a series of images and call the service.

For more information, you can also check the online SAP Leonardo Machine Learning Foundation documentation