🚀 go-pugleaf

pdh@netcom.com (Phil Howard ) writes:


>			A summary of JPEG
>				by
>			Philip D. Howard


>JPEG works with 24-bit color images.  It functions separately in each of the
>3 primary colors, that is, do the reds, then do the greens, then do the blues.
>The three colors are 8 bits each.  It also works with gray scale 8-bit.  The
>theory could also be applied in other ways.

The rest agrees pretty much with what I know. However, I think I remember
that JPEG did not use a RGB model, but some other color model. This is
because changes in luminosity are more easy spotted by the human eye
than changes in saturation in hue. The exact color model I do not know,
but I think I remember that about double the number of information was
kept for luminosity than for the other two color vectors.