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基于多注意力機(jī)制與編譯圖神經(jīng)網(wǎng)絡(luò)的高光譜圖像分類
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國(guó)家自然科學(xué)基金項(xiàng)目(62166005)、國(guó)家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2018AAA0101800)、貴州省科技支撐計(jì)劃項(xiàng)目(QKH[2022]130、QKH[2022]003、 QKH[2021]335)和貴陽(yáng)市科技人才培養(yǎng)對(duì)象及培養(yǎng)項(xiàng)目(ZKHT[2023]48-8)


Hyperspectral Image Classification Based on Multi-attention Mechanism and Compiled Graph Neural Networks
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    摘要:

    針對(duì)高光譜圖像(Hyperspectral image,HSI)分類研究中小樣本學(xué)習(xí)時(shí),無(wú)法達(dá)到理想分類效果的問(wèn)題,以多注意力機(jī)制融合、編譯圖神經(jīng)網(wǎng)絡(luò)與卷積神經(jīng)網(wǎng)絡(luò)有機(jī)結(jié)合提出了一種新的高光譜圖像分類方法。設(shè)計(jì)了一種基于混合注意力機(jī)制的網(wǎng)絡(luò)(Multiple mixed attention convolutional neural network,MCNN)與編譯圖神經(jīng)網(wǎng)絡(luò)(Compiled graph neural network,CGNN),在學(xué)習(xí)樣本有限的情況下,其能有效保留HSI的光譜與空間信息。引入的圖編碼器與圖解碼器可以有效地映射不規(guī)則的HSI地物類別特征信息。設(shè)計(jì)的多注意力機(jī)制可以重點(diǎn)關(guān)注一些重要的空間像素特征。研究了不同訓(xùn)練樣本下對(duì)不同算法學(xué)習(xí)示例分類的影響,在公共數(shù)據(jù)集Botswana (BS)的實(shí)驗(yàn)表明,本文方法比CEGCN(CNN-enhanced graph convolutional network)、WFCG(Weighted feature fusion of convolutional neural network)算法總體分類精度(Overall classification accuracy,OA)分別高2.72、3.86個(gè)百分點(diǎn)。同樣在IndianPines(IP)數(shù)據(jù)集上僅用3%訓(xùn)練樣本數(shù)據(jù)的實(shí)驗(yàn)結(jié)果顯示,本研究方法比CEGCN與WFCG算法的OA分別高0.44、1.42個(gè)百分點(diǎn)。說(shuō)明本研究提出的方法不僅對(duì)HSI具有良好的空間與光譜信息感知能力,而且在微小學(xué)習(xí)數(shù)據(jù)下仍然表現(xiàn)出強(qiáng)有力的分類準(zhǔn)確性。

    Abstract:

    In recent years, although some scholars have achieved satisfactory research results on hyperspectral image (HSI) classification, they often fail to achieve ideal classification results when facing small sample learning. Aiming at this problem, a hyperspectral image classification method was proposed by the organic combination of multi-attention mechanism fusion, compiled graph neural network and convolutional neural network. Firstly, a type of multiple mixed attention convolutional neural network (MCNN) and compiled graph neural network (CGNN) was designed, which can effectively retain the spectral and spatial information of HSI with limited learning samples; secondly, the introduced graph encoder and graph decoder can effectively map irregular HSI feature information; finally, the designed multi-attention mechanism can focus on some important HSI feature categories. In addition, the effect of different training samples on different algorithms for learning example classification was also investigated. Experiments on the public dataset Botswana (BS) showed that the proposed method improved the overall classification accuracy (OA) by 2.72 percentage points and 3.86 percentage points compared with the current state-of-the-art algorithms (CNN-enhanced graph convolutional network, CEGCN; weighted feature fusion of convolutional neural network, WFCG).Similarly, the experimental results on the IndianPines (IP) dataset with only 3% of the training sample data showed that the method also improved the OA of the current state-of-the-art algorithms (CEGCN and WFCG) by 0.44 percentage points and 1.42 percentage points, respectively. This demonstrated that the proposed method not only had good spatial and spectral information perception for HSI, but also showed strong classification accuracy with small learning data.

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孫杰,楊靜,丁書杰,李少波,胡建軍.基于多注意力機(jī)制與編譯圖神經(jīng)網(wǎng)絡(luò)的高光譜圖像分類[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2024,55(3):183-192. SUN Jie, YANG Jing, DING Shujie, LI Shaobo, HU Jianjun. Hyperspectral Image Classification Based on Multi-attention Mechanism and Compiled Graph Neural Networks[J]. Transactions of the Chinese Society for Agricultural Machinery,2024,55(3):183-192.

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  • 收稿日期:2023-12-29
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  • 在線發(fā)布日期: 2024-01-14
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