boofcv.alg.background

Interface BackgroundAlgorithmBasic

All Known Implementing Classes:

BackgroundMovingBasic, BackgroundMovingBasic_IL, BackgroundMovingBasic_PL, BackgroundMovingBasic_SB, BackgroundStationaryBasic, BackgroundStationaryBasic_IL, BackgroundStationaryBasic_PL, BackgroundStationaryBasic_SB

public interface BackgroundAlgorithmBasic

Performs background subtraction on an image using the very simple per-pixel "basic" model, as described in [1]. A simple image is used to represent the background. Each pixel is updated individually using the formula below:

B(i+1) = (1-α)*B(i) + αI(i)
Where B is the background image, I is the current observed image, and α is the learning rate 0 to 1. Where 0 is static and 1 is instant.

If a specific pixel has not been observed before it will be set to the value of the equivalent pixel in the input image.

[1] Benezeth, Y., Jodoin, P. M., Emile, B., Laurent, H., & Rosenberger, C. (2010). Comparative study of background subtraction algorithms. Journal of Electronic Imaging, 19(3), 033003-033003.

Method Summary

Modifier and Type	Method and Description
float	getLearnRate() Returns the learning rate.
float	getThreshold() Returns the threshold for background/moving object.
void	setLearnRate(float learnRate) Specifies the learning rate
void	setThreshold(float threshold) Sets the threshold for background/moving object

Method Detail

getLearnRate

float getLearnRate()

Returns the learning rate.

Returns:

0 (slow) to 1 (fast)

setLearnRate

void setLearnRate(float learnRate)

Specifies the learning rate

Parameters:

learnRate - 0 (slow) to 1 (fast)

getThreshold

float getThreshold()

Returns the threshold for background/moving object.

Returns:

background threshold

setThreshold

void setThreshold(float threshold)

Sets the threshold for background/moving object

Parameters:

threshold - background threshold