VisionObjectDetector

class VisionObjectDetector : NSObject

An object detector and tracker that detects objects in an image and supports tracking them.

  • Unavailable. Use Vision factory methods.

  • Processes the given image for object detection and tracking. The detection is performed asynchronously and calls back the completion handler with the detected object results or error on the main thread.

    Declaration

    Swift

    func process(_ image: VisionImage, completion: @escaping VisionObjectDetectionCallback)

    Parameters

    image

    The vision image to use for detecting and tracking objects.

    completion

    Handler to call back on the main thread with objects detected or error.

  • Returns detected objects in the given image or nil if there was an error. The detection is performed synchronously on the calling thread.

    It is advised to call this method off the main thread to avoid blocking the UI. As a result, an NSException is raised if this method is called on the main thread.

    Declaration

    Swift

    func results(in image: VisionImage) throws -> [FIRVisionObject]

    Parameters

    image

    The vision image to use for detecting objects.

    error

    An optional error parameter populated when there is an error during detection.

    Return Value

    Array of objects detected in the given image or nil if there was an error.