joe@lakesys.UUCP (Joe Pantuso) (06/23/89)
When you have on dithering for grey scales and are using smoothing, the "grey" areas come out as "squigliy" patterns. As far as I can tell this is because the image first is converted the the dithered pattern in black and white and then goes through the smoothing algorythm. So if the device is re-written to smooth first and then convert colors to dotpatterns the results should be much more satisfactory. Agree? JP -- Joe Pantuso joe@lakesys.lakesys.com Home(414)259-1897 Work(414)281-8700 Software ONE
daveb@cbmvax.UUCP (Dave Berezowski) (06/27/89)
In article <756@lakesys.UUCP> joe@lakesys.UUCP (Joe Pantuso) writes: > >When you have on dithering for grey scales and are using smoothing, the >"grey" areas come out as "squigliy" patterns. As far as I can tell this >is because the image first is converted the the dithered pattern in black >and white and then goes through the smoothing algorythm. > >So if the device is re-written to smooth first and then convert colors to >dotpatterns the results should be much more satisfactory. > >Agree? > No, that is not how it works. The printer device first computes the new information (smooths) and then the drivers dither. The 'problem' is in the smoothing algorithm. It is fast but very simple and thus under certain conditions one can get sqiggly lines. To see this in action, do a print out in b&w mode sometime, it does no dithering BUT you'll see the same artifacting. Solution: a (slower) more intellligent smother (not do-able in the forseeable future).