The Rekognition iOS SDK allows developers to access and integrate the functionality of Rekognition with iOS applications and devices. The Rekognition iOS SDK uses Objective-C. Rekognition is a cloud-based facial and concept recognition platform.
Google Cloud Vision API gives developers access to powerful image processing and analysis tools for use in any project. This tutorial on Google Cloud Platform shows followers how to use the API to detect faces in an image, and use the returned coordinates to draw a polygon around each face.
Since Microsoft launched its Bot Framework earlier this year, it has consistently added features to empower developers to create, what Microsoft calls, "the next great conversational experiences." The latest API additions include the Computer Vision, Bing Speech, and Bing Image Search APIs.