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新疆是我国耕地资源的重要储备基地之一,也是《全国土地开发整理规划》划定的重点土地开发整理区域。以新疆于田绿洲为例,探讨了基于快速傅立叶变换改进的HSI融合(FFT-HSI,简称FHSI)的农田信息提取方法,针对融合效果从主观和客观两方面与传统的HSI融合方法进行了比较分析,并在此基础上进行了农田信息的提取试验,结果表明,同传统的HSI融合方法相比,FHSI融合的信息量、纹理特征都明显增强,分类精度明显改善,特别是水田信息的提取效果非常显著,是监测干旱区耕地变化的有效手段。
Xinjiang is one of the important reserve bases for cultivated land resources in China and is also the key land development and consolidation area designated by the National Plan for Land Development and Consolidation. Taking Yutian Oasis in Xinjiang as an example, this paper discusses the method of farmland information extraction based on the improved HSI fusion (FFT-HSI) of FTIR and compares it with the traditional HSI fusion method in terms of both subjective and objective aspects The experimental results show that compared with the traditional HSI fusion method, the information and texture features of the FHSI fusion are obviously enhanced and the classification accuracy is obviously improved, especially the extraction of paddy field information The effect is very significant, which is an effective measure to monitor the change of arable land in arid area.