init(forwardFlow:backwardFlow:)
Creates an object with forward and backward optical flow pixel buffers.
Declaration
init?(forwardFlow: CVPixelBuffer, backwardFlow: CVPixelBuffer)Parameters
- forwardFlow:
A pixel buffer that contains forward optical flow. This value must be non-NULL and IOSurface backed.
- backwardFlow:
A pixel buffer that contains backward optical flow. his value must be non-NULL and IOSurface backed.
Discussion
Instances retain the buffers backing them. Returns NULL if a NULL CVPixelBuffer is provided or if CVPixelBuffers are not IOSurface backed.