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| Sarreq Teryx |
| Posted: Jan 1 2003, 11:56 PM |
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VirtualdubMod Alpha tester
Group: Vdubmod Alpha Testing Team
Posts: 175
Member No.: 41
Joined: 16-July 02
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has anyone seen a VDfilter that can do spline resizing? I know it's in ffdshow (I can't seem to get it to work though).
I've tried the Shortcut S-Spline demo, and it does some really great resizing compared to lanczos
http://www.ixalance.com/redirect.php?page=...uct&id=sspline2
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And as I walk through the Valley of the Shadow of Death, Lord, thy balls and shaft, they comfort me, you annoint my head with oil, some salt, a dash of pepper, a sprigg of parsley......Lord?............Lord??? What dost thou intend to do with that fork??? |
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| phaeron |
| Posted: Jan 2 2003, 12:39 AM |
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Virtualdub Developer
Group: Administrator
Posts: 7773
Member No.: 61
Joined: 30-July 02
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Bicubic is a spline-based algorithm -- the key to the product that you linked to is an adaptive spline algorithm, meaning that the spline-based interpolation is only part of their product. I don't know of any adaptive resamplers for VirtualDub, but it's not uncommon for an algorithm that looks great for single images to have objectionable wobbliness when applied to video; warpsharp is an example of this. Noise is a primary offender.
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| Morsa |
| Posted: Jan 3 2003, 09:35 AM |
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Moderator of the Vdub support board
Group: Moderators
Posts: 640
Member No.: 246
Joined: 9-September 02
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That's the problem with S-Spline.
For the results I've seen, It's looks more or less the same like applying a kind of warpsharp after a bicubic resize. |
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| muf |
| Posted: Jan 7 2003, 11:56 AM |
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MCF team member
Group: Moderators
Posts: 179
Member No.: 46
Joined: 21-July 02
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If it looks good on single images I'd want it anyway! Anime is great for shape-detecting algorithms, as proven on this page. Since anime is usually only half framerate for the drawn parts, I don't think you'd notice any image instableness.
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