Kurtosis is an eigenvalue of normal distribution of the image. 峰度是一個能表徵圖像是否呈正態分佈的特徵值。
The results show that the eigenvalues of the boundary-value problem form a denumerable set, and the eigenvalue approaches infinity. 結果表明邊值問題的特徵值構成一個可數集,並且特徵值趨向於無窮大。