HornSchunckFlow.evaluate

Evaluate Horn-Schunck dense optical flow method between two consecutive frames.

class HornSchunckFlow

override

DenseFlow

evaluate

(

inout Image f1

inout Image f2

DenseFlow prealloc = emptySlice!([3], float)

bool usePrevious = false

)

in { assert (!f1.empty && !f2.empty && f1.channels == 1 && f1.size == f2.size && f1.depth == f2.depth); if (usePrevious) { assert (prealloc.length!0 == f1.height && prealloc.length!1 == f1.width && prealloc.length!2 == 2); } }

Parameters

f1: Type: Image
First image, i.e. previous frame in the video.
f2: Type: Image
Second image of same size and type as f1, i.e. current frame in the video.
prealloc: Type: DenseFlow
Optional pre-allocated flow buffer. If provided, has to be of same size as input images are, and with 2 channels (u, v).
usePrevious: Type: bool
Should the previous flow be used. If true prealloc is treated as previous flow, and has to satisfy size requirements.

Return Value

Type: DenseFlow

Calculated flow field.

HornSchunckFlow.evaluate

Parameters

Return Value

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