RE : how to use pfilt to perform anti-aliasing

Hi!

Does this mean that I may need to bear in mind that the size of the
image to be produced by rpict should always be 3 times bigger than the
size of the final image I want?

Yes. You can call it oversampling. See Mark's pages:

http://markjstock.org/radmisc/aa0_ps1_test/final.html

Cheers, Lars.

The "rad" program (or "trad" if it works) takes care of these details for you.

-Greg

ยทยทยท

From: "Lars O. Grobe" <[email protected]>
Date: June 14, 2011 6:37:26 AM CDT

Hi!

Does this mean that I may need to bear in mind that the size of the
image to be produced by rpict should always be 3 times bigger than the
size of the final image I want?

Yes. You can call it oversampling. See Mark's pages:

http://markjstock.org/radmisc/aa0_ps1_test/final.html

Cheers, Lars.

Hi!

The content of the test.rif file is:

(...)

RESOLUTION= 800 800 800

Why do you have three times 800 here? Looks like the third one gets interpreted as pixel aspect (-pa), which leads to the weird result that pfilt tries to downsample from a resolution of 2400x2400px to 800x1px.

Try

RESOLUTION= 800 800

Cheers, Lars.