This is doubtless due to the displacement of hand labour by machinery . 無疑這是使用機(jī)器代替手工所產(chǎn)生的結(jié)果。
The thesis aims to solve the problems in the information acquisition and processing , feature extraction and classification in the hand back based identification . the main contents are as follows : ( 1 ) manufacturing a hand back acquisition device for hand back based identification , which can reduce the rotation and displacement of hand during the hand back images are captured , and build up a hand back image database which contains 600 images . ( 2 ) researching a novel 2dpca algorithm which extracts both horizontal and vertical is also proposed to choose and classify features 本論文旨在解決手背識(shí)別中的信息獲取與處理,特征提取與分類等各種問題,主要內(nèi)容包括: ( 1 )針對手背識(shí)別研制了一套手背樣本采集設(shè)備,有效地降低了采集過程中手的位移和旋轉(zhuǎn)對識(shí)別性能的影響,建立了一個(gè)包括600張圖片的手背樣本庫; ( 2 )研究了一種新的2dpca特征提取算法,該方法可以有效提取水平和垂直方向上的圖像特征,并對特征進(jìn)行遴選和降維; ( 3 )在對chien的nfs的修正和改進(jìn)基礎(chǔ)之上,研究了一種新的nfs分類方法,該方法可以有效地去除chien的特征空間所包涵的冗余和不確定特征點(diǎn),還解決了傳統(tǒng)nfs特征空間的坐標(biāo)原點(diǎn)問題; ( 4 )采用新的2dpca特征提取算法和nfs分類方法在手背樣本庫上進(jìn)行實(shí)驗(yàn)。