Hi, all - I'm fairly new to ASP and I was wondering if there s a way to, say, use a filter on a single color channel.
As an example, I have some printed artwork that was scanned in such a way that the halftone dots of the 4-color printed page and the scan resolution create a moire effect. Back when I was working in PShop, I could set the colorspace to LAB and put a slight blur filter onto JUST the A or B (color) channels, without blurring the L (lightness) channel. This would fuzz the colors to smooth out the moire effect, but leave light/dark values (where we see most of the detail in a picture) unchanged. It's an incredibly useful hack - in fact, working in LAB space is useful for a LOT of purposes and it would be great to, somehow, be able to work in it.
Thanks for any help you can offer.
