Filtering pictures
Posted: Tue Jan 11, 2005 4:49 pm
Hi !
Dont know if i should write my message in this topic but hey i am new
(ok, i am just lame , hmm)
I am upsizing (800x600 -> 1024x768) images and in ACDsee i can select resize filters. Does anyone know anything about next few filters:
bell, box, bicubic, b-spline, mitchell, lanczos, triangle.
Example: i know B-spline is derived through N convolutions of box filter B0, so B1 = B0 * B0, B2 = B0 * B1 = B0 * B0 * B0, ... The core (i think is also called kernel or something like that) is the same as bicubic core, that is
****
****
****
****
OK, that was xample
So, can you help me !?
Tnx, for your post, bye !
Dont know if i should write my message in this topic but hey i am new
(ok, i am just lame , hmm)
I am upsizing (800x600 -> 1024x768) images and in ACDsee i can select resize filters. Does anyone know anything about next few filters:
bell, box, bicubic, b-spline, mitchell, lanczos, triangle.
Example: i know B-spline is derived through N convolutions of box filter B0, so B1 = B0 * B0, B2 = B0 * B1 = B0 * B0 * B0, ... The core (i think is also called kernel or something like that) is the same as bicubic core, that is
****
****
****
****
OK, that was xample
So, can you help me !?
Tnx, for your post, bye !