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Computer Vision REST API reference - Azure Cognitive Services

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This article demonstrates how to call a REST API endpoint for Computer Vision service in Azure Cognitive Services suite.. The cloud-based Computer Vision API provides developers with access to advanced algorithms for processing images and returning information. By uploading an image or specifying an image URL, Computer Vision algorithms can analyze visual content in different ways based on inputs and user choices. REST APIs and client library SDKs are available to help developers build applications to incorporate Computer Vision capabilities.

Call the Computer Vision endpoint

  1. Start by creating an Azure Cognitive Services resource, and within that specifically a Computer Vision resource. For instructions, see Create a Cognitive Services resource using the portal.

  2. From the Azure Portal, copy the key and endpoint required to make the call. For instructions, see Get the keys for your resource.

  3. From the left navigation on this article, expand the node for the version of the API you want to work on, and then select the operation that you want to perform (e.g., Analyze Image). On the right pane, select Try It.

  4. In the REST API Try It pane, perform the following steps:

    1. In the Endpoint text box, enter the resource endpoint that you copied from the Azure portal.
    2. In the Ocp-Apim-Subscription-Key text box, enter the key that you copied from the Azure portal. If the call requires any more headers, add those with the appropriate values as well.
    3. Provide other parameters, headers, and message payload (body) as required for the operation.
    4. Select Run.

  5. You will see the relevant response with an appropriate response code.

Samples

Visit the Cognitive Services REST API Sample Github repo for various samples on working with Cognitive Services using REST.

See also