原盤畫質很差。原生分辨率是骨頭社祖傳的 720p。主要瑕疵就是欠碼,極度欠碼。線條周圍有明顯蚊噪,平面有極寬極重的色帶。線條還很糊,伴有較重的鋸齒和輕微的振鈴,噪點則聊勝於無,由於色帶太重,噪點層中甚至都有殘留的色帶。我們參考了美版 BD,色帶情況略好一些,但有較重的振鈴問題(推測是美版在灌錄前進行了沒必要的拉升),同樣不好處理,所以最後我們還是使用日版 BD 進行了製作。如此嚴重的色帶問題,無非就是大力去色帶或者直接加噪點掩蓋,出於碼率控制考量,我們選擇了前者。在算法選擇上,我們使用了針對巨大色帶的新式算法,盡量減少了紋理損失。至於其他欠碼問題則採用了基於神經網絡算法的自適應去色塊處理。由於線條質量也欠佳,我們在逆向拉升重構時選用了更費算力但相對優質的還原拉升算法。其他就是常規處理了:抗鋸齒、補償性銳化、自適應降噪。
感謝所有參與制作者:
總監:Vanitas
壓制:Noe Archiviste
整理:maboroshi
發佈:sillonae
分流:VCB-Studio CDN 分流成員
Image Credit: Yonab
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本當にありがとう
辛苦!!