暗電流ノイズ（ダークノイズ）とは、画素内で光に依存せずに熱の影響で発生する電子 (以降、暗電子) の数の統計的なばらつきのことで、光子でいうショットノイズに相当するノイズ要素です。暗電流ノイズは暗電流から計算されます。
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