基于可见光-长波红外高光谱成像协同特征提取的林地型伪装网识别方法

Method for Identifying Forestland-Type Camouflage Nets Based on Collaborative Feature Extraction from Visible-Light and Long-Wave Infrared Hyperspectral Imaging

  • 摘要: 针对林地型伪装网在自然环境下进行单一的波段探测具有很好的隐匿性,本研究提出了一种基于可见光(380~1050 nm)高光谱与长波红外(8~14 μm)高光谱数据的协同识别方法。通过可见光高光谱成像系统获取了地物的色彩、形状与光谱信息,同时使用长波红外高光谱成像系统获取亮温光谱信息。提取光谱特征、纹理特征等多维特征,最后以随机森林为分类模型得到识别结果。实验结果表明:双波段融合特征模型的识别效果显著优于单波段,融合模型的召回率为82.4%,比长波红外单波段高15.7%,比可见光单波段高2.3%,F1分数较长波红外单波段和可见光单波段分别提升11%、2.16%,双波段融合方案有效提升了伪装网的识别精确率,充分发挥了双波段光谱模式的互补优势,有效解决了单一波段探测局限的问题。

     

    Abstract: Camouflage nets in forested areas exhibit good concealment when subjected to single-band detection in natural environments. This study proposes a collaborative recognition method based on visible-light (380-1050 nm) and long-wave infrared (8-14 μm) hyperspectral data. A visible-light hyperspectral imaging system was used to obtain the color, shape, and spectral information of ground objects, whereas the long-wave infrared hyperspectral imaging system was employed to acquire bright-temperature spectral information. Multi-dimensional features such as spectral and textural features were extracted, and a random forest was used as the classification model to obtain the recognition results. The experimental results showed that the recognition effect of the dual-band fusion feature model was significantly better than that of the single-band model. The recall rate of the fusion model was 82.4%, which was 15.7% and 2.3% higher than those of the long-wave infrared and visible-light single bands, respectively. The F1 score increased by 11% and 2.16% compared to the long-wave infrared and visible light single bands, respectively. The dual-band fusion scheme effectively improved the recognition accuracy of the camouflage net, fully exploited the complementary advantages of dual-band spectral modes, and effectively solved the limitations of single-band detection.

     

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