寿门堂出品,原生分辨率 810p,画质意料之中的差。最大的问题是欠码造成的色带,主要角色蘑菇的头部和骑士的盔甲是色带的重灾区,全片基本没有幸免遇难,可以说是惨遭献祭。其次是大部分素材的线条有较重的锯齿,少部分素材有明显的 AI 拉升痕迹(看上去像油画),有一定程度的振铃但没有锯齿。另外 OP 和 ED 均有一定程度后期锐化,在赋予了较强的艺术效果的同时也引入了较重的振铃。处理上,主要是逆向拉升重构、抗锯齿、较强的去色带、补偿性锐化和自适应降噪。除此以外我们针对不同场景使用了强度不一的组合去振铃,保持艺术效果同时削弱振铃以提升观感。
Produced by Jumondou, the native resolution is 810p, and the image quality is disappointingly poor as expected. The biggest issue is the colour banding caused by insufficient bit-rate. The mushroom head of the main character and the knight's armour, are the hardest-hit areas, and there are barely any exceptions from the series beginning to the end. In addition, most of the graphic resources suffer from heavy line aliasing. A few of them show obvious AI upscaling traces (look like oil paintings), with a certain degree of ringing but no aliasing. Moreover, both the OP and the ED show a certain degree of sharpening, which creates a strong artistic effect, but also introduces heavy ringing. PP involves descaling and reconstruction, anti-aliasing, relatively strong de-banding, contra-sharpening and adaptive denoising. Apart from these, we applied different strengths of de-ringing to different scenes, in order to maintain the artistic effects, improve the visual appeal, while reducing the ringing.