1998-10-08  root  <root@eyestorm.faenza.it>

	* logconv.c (LoGZero): Modified the zero-crossing detection algorithm.
	(LoGConvolution): LoG on RGB images is now computed on their
	luminance.

1998-05-04  root  <root@eyestorm.faenza.it>

	* logconv.c: Added support for RGB images. 
	I trasform an RGB triplet to a double with (R << 16 + G << 8 + B).
	Behaviour is consistent with Gray images.

1998-05-01  root  <root@eyestorm.faenza.it>

	* logconv.c: Changed FSF address