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BuKe factory >> Design >> 如何對印刷品書籍進行掃描操作

如何對印刷品書籍進行掃描操作

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-12 | 516 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
加網印刷品都存在玫瑰斑和龜紋,掃描後,玫瑰斑和龜紋更明顯。目前,一般掃描儀都具有去網功能,去網功能的實質是要將圖像虛化。虛化的結果可以將龜紋去掉,從而得到一個光滑的圖像。因此如果遇到印刷品原稿時,一般要選擇 Descreen命令掃描。一般地說,掃描時去網,比掃描後在 Photoshop中去網效果要好。

如何對印刷品書籍進行掃描操作

加網印刷品都存在玫瑰斑和龜紋,掃描後,玫瑰斑和龜紋更明顯。目前,一般掃描儀都具有去網功能,去網功能的實質是要將圖像虛化。虛化的結果可以將龜紋去掉,從而得到一個光滑的圖像。因此如果遇到印刷品原稿時,一般要選擇 Descreen命令掃描。一般地說,掃描時去網,比掃描後在 Photoshop中去網效果要好。

由於印刷品密度範圍小,並且掃描時需要虛化,因此這類原稿很適用於平板掃描儀。另外有的印刷品的龜紋很嚴重,即使掃描時去網仍然不能使圖像光滑,則需要在 Photoshop中繼續去網,這樣有時會導致去網後圖像變得太虛,不過我們可在 Photoshop用Unsharp mask對圖像進行清晰度強調。

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如何對印刷品書籍進行掃描操作
如何對印刷品書籍進行掃描操作

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