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NGTDM : Neighbouring Gray Tone Difference Matrix

Last updated at Posted at 2021-02-03

Neighbouring Gray Tone Difference Matrix (NGTDM)

NGTDMは、Matrixと呼ばれるものの、最終的には、正規化前後のヒストグラムと、「ピクセル値[i]近傍の平均とiとの絶対誤差の総和」を求めるものです。
近傍の距離はδで指定します。通常はδ=1です。
このとき、pi(割合)はiが出現する確率という意味もあります。

NGTDM.PNG

References

  • Amadasun M, King R; Textural features corresponding to textural properties; Systems, Man and Cybernetics, IEEE Transactions on 19:1264-1274 (1989). doi: 10.1109/21.44046
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