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Originally posted by andrew:
I don't agree that the problem has anything to do with the sharpness; the same process was applied to all of the other sprites, which look stunning. The problem is that the textures on the Manticore are a bit too busy/detailed. No worries, it's an easy change (which we are making) to tone the Manticore down a bit.
I'm sure you know about what I am trying to show you...but I'm not sure if you know what I'm talking about. Anyway.
What I'm saying is that the application of a sharpening filter can add extra "business" around existing details. Without the filter, the Manticore may be fine, it may not. That aside, use of the sharpen filter can produce an unwanted effect around lines, which looks unrealistic and just plain bad. I've taken the liberty of preparing an example image.
(url="http://"http://www.jps.net/btaenzer/madness.jpg")http://www.jps.net/b...zer/madness.jpg(/url)
1 is a standard, antialiased line, like you might see on a straight-from-program render, and an enlarged version of it. As I found out, Photoshop automatically applies a little sharpening to when you enlarge an image with Bicubic filtering, so to keep the comparison fair, I did everything the same.
2 is 1 with the "Sharpen More" filter applied - overkill, but it shows the effect most clearly. In the enlarged version it is easy to see the unwanted, ugly effect; there is a bright line next to a dark line when before it was smooth. That's how the sharpen filter works - it increases contrast at the junction between two areas.
Though it can partially restore blurry images and works nicely on high-resolution images for print, on-screen it simply clutters and distracts from what it is applied to with little benefit. On rendered images it creates strange lines and shadows around edges that are far from realistic and not in the least attractive.
3 and 4 are taken directly from the Enterprise ship displayed on the EV3 screenshots page. In 3 the effect is distinctly visible and noticeable. The major problem areas are circled in red. In 4, the sides of the front "prongs" overlap, but the sharpen filter almost makes it look otherwise by making a black outline around the frontmost prong. Needless to say this isn't good. (so why'd I say it? um...)
Aside from simply looking bad, it could increase the "business" of a ship with details because it takes edges and essentially adds 2 more areas: the lighter and darker lines around the original edge. With a high-detail ship, adding 2 more visible features per detail could quickly make the ship a jumble of light and dark.
Just out of curiosity, I'd like to see the Manticore pre-sharpening. Who knows - the sharpening may turn out to actually help. I'm keeping an open mind, but what I've said is what I know now.
I hope you'll take what I've said into account and try the graphics without sharpening to see what it's like. If you've already compared and liked this better, perhaps a poll would be good - there's nothing like the opinions of the target audience to improve a product in the eyes of those to whom it matters a lot.
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