Search found 251 matches

by eL_PuSHeR
Fri May 01, 2009 9:16 am
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Thank you very much! I will try it and post results. My findings so far: 1) With random ordered dither I got a very noisy output image 2) Starting with Gamma 1.8 (being 1 default or none), I got very nice results with ordered ort6x6 for the photo faced I posted earlier. 3) Upped Gamma to 2.0 (to com...
by eL_PuSHeR
Thu Apr 30, 2009 6:49 am
Forum: Classic - General Support
Topic: Confusion with BMP
Replies: 3
Views: 400

Re: Confusion with BMP

Everything <=256 colours is paletted. For colour depts greater than 8bpp is high/true colour.
by eL_PuSHeR
Thu Apr 30, 2009 6:40 am
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Nice! I will test it later when I came back from work. As for DBS, its results seems promising (at least for minimizing error-diffusion artifacts). You are right about configurable pattern dithers. That would yield a lot of flexibility. I have tried the diag5x5 dither and it seems good enough for pr...
by eL_PuSHeR
Wed Apr 29, 2009 12:46 pm
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Thanks. Updated. Here's another image with transparency for testing (made from svg). So far, I've found out that for images with solid colours (like the example below) is better to use a lower %error propation for Riemersma (=less dither). And for me, queue size = 64 seems better than 32 (maybe it's...
by eL_PuSHeR
Wed Apr 29, 2009 7:13 am
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

I am impressed. I will continue testing, because I've found out that I get some nasty "bleeding effect" using Riemersma with latest version I got installed (1.71)

Thank you.
by eL_PuSHeR
Mon Apr 27, 2009 7:07 pm
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Thank you very much for your great efforts and good work!. EDIT. Heh, your page says version 1.71 anyway. 8) EDIT2. I made some tests using Riemersma and it did a wonderful work when printed on my laser printer. Chapeau! I am truly impressed. By the way, this image is quite difficult to quantize, ev...
by eL_PuSHeR
Sat Apr 25, 2009 10:55 pm
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Thank you very much. Here is the difference between Paint Shop Pro X b/w dither (stucki with an optimized palette) and SColorQ. In my opinion, Stucki is better (but not suitable for 600dpi printing, because you won't get a nice grayscale gradation. Pixels are too close to each other resulting in a d...
by eL_PuSHeR
Sat Apr 25, 2009 1:39 pm
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

I don't know why but the Lena image you posted looks okay. But for me, I have got only crappy results. I am posting here one image I used for testing but beware it's almost 800KB in size.

Image
by eL_PuSHeR
Sat Apr 25, 2009 1:24 pm
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Thank you very much!. It's not a particular image. My goal is to test several halftoning/dithering methods for outputting images to my laser printer (b/w only). So far, Postscript (1200dpi) and Image Alchemy's Stevenson & Arce error-diffusion dither (600 dpi) get me the best results. Anyway, when te...
by eL_PuSHeR
Sat Apr 25, 2009 9:44 am
Forum: Miscellaneous
Topic: Looking for TIF-printer-driver
Replies: 11
Views: 7177

Re: Looking for TIF-printer-driver

I use FreePDFXP which is similar to FreePDF Creator and it's also free. Both use Ghostscript, and both have the same issue when creating TIFF or PNG files, where there isn't any antialias.
by eL_PuSHeR
Sat Apr 25, 2009 9:27 am
Forum: Miscellaneous
Topic: Ximagic Quantizer
Replies: 119
Views: 27620

Re: Ximagic Quantizer

Hello. First post here.

Any way to get true Black & White when dithering to 1bpp (2 colours)?. I guessed "uniform palette" was that, but I was wrong.

EDIT: OK, I have solved it. Too many parameters are misleading... :P