SyntheticSequenceGenerator

Objective-C

@interface SyntheticSequenceGenerator : Algorithm

Swift

class SyntheticSequenceGenerator : Algorithm

Synthetic frame sequence generator for testing background subtraction algorithms.

It will generate the moving object on top of the background. It will apply some distortion to the background to make the test more complex.

Member of Bgsegm

Methods


                    
                    
                    -initWithBackground:object:amplitude:wavelength:wavespeed:objspeed:

Creates an instance of SyntheticSequenceGenerator.

Declaration

Objective-C

- (nonnull instancetype)initWithBackground:(nonnull Mat *)background
                                    object:(nonnull Mat *)object
                                 amplitude:(double)amplitude
                                wavelength:(double)wavelength
                                 wavespeed:(double)wavespeed
                                  objspeed:(double)objspeed;

Swift

init(background: Mat, object: Mat, amplitude: Double, wavelength: Double, wavespeed: Double, objspeed: Double)

Parameters

`background`	Background image for object.
`object`	Object image which will move slowly over the background.
`amplitude`	Amplitude of wave distortion applied to background.
`wavelength`	Length of waves in distortion applied to background.
`wavespeed`	How fast waves will move.
`objspeed`	How fast object will fly over background.


                    
                    
                    -getNextFrame:gtMask:

Obtain the next frame in the sequence.

Declaration

Objective-C

- (void)getNextFrame:(nonnull Mat *)frame gtMask:(nonnull Mat *)gtMask;

Swift

func getNextFrame(frame: Mat, gtMask: Mat)

Parameters

`frame`	Output frame.
`gtMask`	Output ground-truth (reference) segmentation mask object/background.