原盘画质一般,原生分辨率为 720p,被比较柔和的算法拉升上来,整体观感比较糊,而且部分线条有较严重的锯齿和晕轮。不过原盘最严重的问题还是随处可见的色带。处理手段也就是逆向拉伸再重构,然后进行较大力度的去色带处理。接着是常规的补偿性锐化和自适应降噪。
The source quality is mediocre with a 720p native resolution. It has been upscaled by soft algorithm which causes blurry images. Meantime some line art display severe aliasing and ringing. Nevertheless, the primal problem of the source is the ubiquitous banding. We have resorted to descaling and reconstruction, stronger de-banding filter as well as some regular sharpness compensation and self-adaptive de-noising.