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基于多時相GF-1 WFV和高分紋理的制種玉米田識別
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京津冀作物新品種推廣服務(wù)云平臺建設(shè)應(yīng)用項(xiàng)目(D171100002317002)


Identification Method of Seed Maize Plot Based on Multi-temporal GF-1 WFV and Kompsat-3 Texture
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    摘要:

    為給監(jiān)管部門提供更準(zhǔn)確的數(shù)據(jù),及時發(fā)現(xiàn)非法玉米制種區(qū)域,根據(jù)不同地物在多時相光譜、高空間紋理等特征上的差異,基于163個地面樣本、多源時序優(yōu)選植被指數(shù)集和高空間分辨率遙感影像紋理分析的方法,進(jìn)行制種玉米田識別。通過相關(guān)性分析,從GF-1 WFV 多光譜影像計算的8個植被指數(shù)(VI)中確定6種,多維度反映不同作物光譜差異,并利用隨機(jī)森林(RF)分類方法實(shí)現(xiàn)玉米田塊的識別;利用玉米抽雄期的1期0.7m Kompsat-3全色影像,構(gòu)建灰度共生矩陣(GLCM)紋理特征體系,并進(jìn)行局部二值模式(Uniform-LBP)旋轉(zhuǎn)不變處理,解決了影像中作物種植紋理的方向性問題,同時為體現(xiàn)制種玉米父母本間隔種植的特點(diǎn),提出了Subtract紋理特征,進(jìn)一步識別制種玉米田。以新疆維吾爾自治區(qū)奇臺縣為研究區(qū),對本文提出的方法進(jìn)行實(shí)例驗(yàn)證,試驗(yàn)結(jié)果表明,制種玉米田識別的制圖精度、用戶精度分別為93.34%、99.19%。

    Abstract:

    Accurately mastering the planting area and distribution of the seed maize field can provide more accurate data for regulatory authorities, and timely detection of illegal seed production areas. According to the differences of high temporal phase spectrum, high spatial texture and shape of features, the identification of maize seed production field was carried out based on 163 ground samples, multisource sequential optimization of vegetation index set and texture analysis of high spatial resolution remote sensing images. Through correlation analysis, six vegetation indices (VIs) of the normalized difference vegetation index (NDVI), enhance vegetable index (EVI), normalized difference water index (NDWI), triangle vegetation index (TVI), ratio vegetable index (RVI) and difference vegetation index (DVI) were identified from eight VIs reflecting different growth conditions of vegetation. And the random forest (RF) classification algorithm was used to identify the seed maize field. The graylevel co-occurrence matrix (GLCM) texture feature system was constructed by using the 0.7m Kompsat-3 image of tasseling stage. It contained five texture features: mean, entropy, contrast, angular second moment (ASM) and homogeneity. At the same time, Subtract texture features were proposed in order to reflect the characteristics of the intercropping of corn parents. Before constructing the texture feature system, local binary patterns (LBP) processing on the image was performed to solve the directional problem of crop planting texture in the image. The random forest was used to identify the seed maize field from maize field classification results. Qitai County in Xinjiang Uyghur Autonomous Region was taken as a research area to verify the proposed method, the results showed that the user’s accuracy and mapping accuracy of the seed maize field was 99.19% and 93.34%, respectively. The research result can provide further technical support for the monitoring and supervision of hybrid corn farming in China.

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張超,童亮,劉哲,喬敏,劉帝佑,黃健熙.基于多時相GF-1 WFV和高分紋理的制種玉米田識別[J].農(nóng)業(yè)機(jī)械學(xué)報,2019,50(2):163-168,226. ZHANG Chao, TONG Liang, LIU Zhe, QIAO Min, LIU Diyou, HUANG Jianxi. Identification Method of Seed Maize Plot Based on Multi-temporal GF-1 WFV and Kompsat-3 Texture[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(2):163-168,226.

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  • 收稿日期:2018-08-20
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  • 在線發(fā)布日期: 2019-02-10
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