用查表法提高分類器速度
FAST CLASSIFICATION ALGORITHM USING TABLE-LOOK-UP METHOD
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摘要: 正 在使用地球資源衛(wèi)星進行農(nóng)、林、礦等各種資源調(diào)查中,需要處理極其大量的數(shù)據(jù)。對數(shù)據(jù)分類是各種處理中最費機時的操作。提高分類器的速度將可縮短處理周期,降低處理費用。因此尋找快速算法一直是人們努力解決的課題之一。 利用微型機處理數(shù)據(jù)時,運行時間長的問題尤其嚴重,這大大限制了遙感技術(shù)的推廣和普及。作者在遙感應(yīng)用軟件的研究中,利用MSS數(shù)據(jù)是整型,且動態(tài)范圍較窄的特點
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關(guān)鍵詞:
Abstract: In this paper a fast classification algorithm which uses table-look-up method is proposed. Both theoretical and experimental results have shown that (1) in two dimensional case it can reduce the computer time to the same order needed for the data I/O; (2) in the case of more than two dimensions it can save more than half of computer time. The classification accuracy is not affected by the use of table-look-up method. The algorithm is most suitable for computers without floating-point processor while there are many remote-sensed data to be processed. -
K. Fukunaga著,陶篤純譯,統(tǒng)計圖形識別導(dǎo)論,科學出版社,1978年12月. -
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