第一季原盘画质一般。原生分辨率为 720p,被比较劣质的算法拉升上来,导致线条带有严重锯齿和振铃,而且画面的边框部分有很强的拉升带来的边缘振铃。画面暗场极多,而且大量运用暗式淡入淡出,这些场景出现了严重的色带。
对于线条,大部分问题都可以通过逆向拉升再重构解决,然后补上轻微的抗锯齿处理和中等强度的去振铃处理。对于色带,由于大部分场景的色带都很少,只有少部分暗场有较严重的色带,我们结合亮度信息设计了复杂的保护手段,并使用了一个色带检测算法,根据检测的结果对去色带的力度进行了自适应调整。最后加上了一定强度的动态噪点,以改善原盘噪点的观感。
For Season 1, the source is of nothing special. Its native resolution is 720p, then upscaled by a poor algorithm. This leads to many defects: lines featuring severe aliasing and ringing as well as serious ringing on the image borders. Dark scenes are widely spread throughout Season 1, together with the plentiful use of dark fades, resulting in heavy colour banding.
For the lines, most of the problems can be solved by descaling and reconstruction, then slight AA and moderate de-ringing as supplements. For colour banding, since most scenes have only a little colour banding, in order to deal with severe colour banding in dark scenes, we designed a complex mask for protection in combination with luminance information. We also use a colour banding detection algorithm. Thanks to all those, we finally adaptively controlled the strength of de-banding. At the end, we added some grains to improve the viewing exprience.
第二季原盘画质较好。原生分辨率为 1080p,锐利度相比第一季大幅提升。这个在当时(2013 年)可以说是次世代作画的作品,即使放到现在也称得上是凤毛麟角。可惜的是依然有些场景和第一季一样出现了严重的色带。而且线条过于锐利,出现了较严重的锯齿。我们做了常规的抗锯齿和去振铃处理,然后去色带手段沿用第一季,并略微减小了力度。
As to Season 2, the source is much better, with a native resolution of 1080p. The sharpness is significantly improved compared to Season 1. There's no doubt that this was a next generation work at its time (2013), still rarity nowadays. Unfortunately, there are still some scenes with the same heavy colour banding as Season 1. What's more, the over-sharp lines leads to severe aliasing. We applied regular AA and de-ringing, then similar de-banding method as Season 1 with a lower strength.
Haiyore! Nyaruko-san F 的原盘画质极好。原生分辨率相比第二季来说略有下降,但也接近 FullHD。线条几乎没有问题,色带的情况也改善了不少。处理手段和第二季基本相同,但力度均有下降。
Haiyore! Nyaruko-san F has an excellent image quality. The native resolution is a bit less lower compared to Season 2, but still close to FullHD. The lines are almost fine, and the colour banding issue is much improved. Our processing methods were basically the same as Season 2, but the strength was all reduced.
其他的 OVA 和总集篇就是沿用先前的处理,只是总集篇中第二季度的部分出现了较为严重的振铃,可能是后期缩放导致,我们使用了力度较大的去振铃处理。
The other OVAs and clip shows were treated with the same processing before. The only diffenrence comes from the clip show for Season 2, which features very serious ringing, probably due to post-scaling. We applied a strong de-ringing process to remove it.
FLASH 动画的制作比较简单,只是锯齿比较严重,我们进行了一些常规性的处理。
The flash anime is quite simple, with only serious aliasing. We applied some regular processing on it.
发布(西娅): 上古神作一时爽,发布考据火葬场。
感谢所有资源提供者 / Thank to all resource providers:
CDs:{Melodies, 天使心之}@TSDM,eternalwind@U2
Scans: Melodies@TSDM