protected void updateCurrent(ImagePyramid<I> image) {
		this.currentImage = image;
		for( int i = 0; i < image.getNumLayers(); i++ ) {
			gradient.process(image.getLayer(i), currentDerivX[i], currentDerivY[i]);
		}
	}
protected void updateCurrent ( ImagePyramid < I > image ) { this . currentImage = image ; for ( int i = 0 ; i < image . getNumLayers ( ) ; i ++ ) { gradient . process ( image . getLayer ( i ) , currentDerivX [ i ] , currentDerivY [ i ] ) ; } }
Computes the gradient and changes the reference to the current pyramid