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BuKe factory >> 掃描儀的​清晰度

掃描儀的​清晰度

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-08-22 | 692 Views | 🔊 Click to read aloud ❚❚ ▶ | Share:
圖像顏色的過渡輪廓邊界處的虛實程度，也稱之為銳度

  掃描儀的清晰度

清晰度一個圖像清晰與否，主要表現如下：

①圖像層次質感的細微精細程度。印畫冊例如表現在皮膚的細紋的紋路是模糊還是清晰其反映的本質是明暗層次過渡區細節之間的反差大小。

②印畫冊圖像顏色的過渡輪廓邊界處的虛實程度，也稱之為銳度。虛實程度其實反映的就是邊界顏色漸變的寬度，清晰度高，寬度小；清晰度低，寬度大。

③掃描儀的清晰度性能是掃描儀系統綜合性能的=個宏觀表現。印畫冊從清晰度的概念簡單地看，分辨力和採樣位數越高，圖像應該越清晰。

實際上清晰度不僅僅和這兩者有關，印畫冊還和光電轉換器件CD器件的信噪比、使用的光學系統的聚焦能力以及鏡頭的分辨力有關。

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