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信息化应用22年6期

融合物候知识和多时相遥感的冬小麦种植面积提取
刘伟诚¹,马静²
(1. 广东天信电力工程检测有限公司,广东 广州 510663;2. 珠江水资源保护科学研究所,广东 广州 510611)

摘  要:选用播种期和灌浆期两景 Landsat8 卫星影像进行冬小麦种植面积提取研究。结合研究区冬小麦生长物候知识,提取两期遥感影像的归一化差值植被指数(NDVI),并进行运算处理,提取出研究区冬小麦种植面积。同时基于灌浆期遥感影像,采用最大似然法进行监督分类处理,进而提取研究区冬小麦种植面积。将两种方法提取的冬小麦种植面积与官方统计数据进行精度对比,结果表明,物候知识法提取精度较最大似然法提取精度高。


关键词:冬小麦;种植面积提取;物候知识法;最大似然法



DOI:10.19850/j.cnki.2096-4706.2022.06.036


基金项目:河南省高等学校重点科研项目(21A420003)


中图分类号:TP391                                         文献标识码:A                                    文章编号:2096-4706(2022)06-0141-04


Extraction of Winter Wheat Planting Area of Fusion on Phenological Knowledge and Multi Temporal Remote Sensing

LIU Weicheng1, MA Jing2

(1. Guangdong Tianxin Electric Power Engineering Testing Co., Ltd., Guangzhou 510663, China ; 2.Scientific Institute of Pearl River Protection,Guangzhou, Guangzhou 510611, China)

Abstract: This paper selects two satellite images of Landsat8 during sowing and filling to study the winter wheat planting area extraction. It combines with the winter wheat growth and phenological knowledge of the study area, extracts two periods remote sensing images of the Normalized Difference Vegetation Index (NDVI), and it does the operation and processing to extract winter wheat planting area of the study area. Meanwhile, based on the remote sensing images in the filling stage, the maximum likelihood method is used for supervised classification and processing, and then extracts the planting area of winter wheat in the study area. The accuracy of winter wheat planting area extracted by the two methods is compared with the official statistical data, and the results show that the extraction accuracy of phenological knowledge method is higher than that of maximum likelihood method.

Keywords: winter wheat; planting area extraction; phenological knowledge method; maximum likelihood method


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作者简介:刘伟诚(1987.09—),男,汉族,江西吉安人,工程师,硕士研究生,研究方向:精密工程测量与遥感 ;马静(1981—),女,汉族,福建龙岩人,高级工程师,硕士研究生,主要研究方向:水资源规划及环境保护。