init(trajectoryLength:_:frameAnalysisSpacing:)
Creates a trajectory-detection request.
Declaration
init(trajectoryLength: Int, _ revision: DetectTrajectoriesRequest.Revision? = nil, frameAnalysisSpacing: CMTime? = nil)Parameters
- trajectoryLength:
The number of points required to analyze to determine that a shape follows a parabolic path. This argument value must be at least 5.
- revision:
The specific algorithm or implementation revision that the system uses to perform the request.
- frameAnalysisSpacing:
The duration between analysis operations. Increase this value to reduce the number of frames analyzed on slower devices. By default, Vision analyzes all frames.