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《Remote Sensing Technology and Application》 2018-01
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Assessments of Fusion Methods Using WorldView-2 Satellite Images for Coastal Oyster Culture Observation

Zhou Weifeng;Cao Li;Li Xiaoshu;Cheng Tianfei;Key Laboratory of Fishery Resources Remote Sensing and Information Technology,Chinese Academy of Fishery Sciences;School of Mathematics,Physics and Information Science,Zhejiang Ocean University;Scientific Observing and Experimental Station of Fishery Remote Sensing,Ministry of Agriculture;  
Image fusion is one of the most important steps in remote sensing information extraction.To select the appropriate fusion method is the crucial link.In this paper,Xiangshan Port in Zhejiang Province is the study area,and the oyster culture is the observation target.The satellite of WorldView-2 multispectral and panchromatic images were used to detect the distribution of the coastal oyster farming.The different five fusion methods,such as Principal Component Analysis(PCA),Gram-Schmidt(GS),NNDiffuse Pan Sharpening,Brovey Transform and Wavelet Transform,were evaluated by two of subjective qualitative and objective quantitative aspects.We compared the fused images with the original image using six kinds of statistical parameters including mean,standard deviation,entropy,average grads,correlation coefficient and spectral distortion to evaluate the images' fusion performance.The results indicate that,for the characteristics of coastal oyster farming,the fusion image by principal component analysis method not only preserves detail spatial texture information but also maintains the spectral character well.The method of PCA is the most suitable fusion method for remote sensing applications in coastal oyster culture with WorldView-2 images.The fusion effect of GS is second to PCA,which can be used as an alternate method for fusion applications.NNDiffuse Pan Sharpening,Wavelet transform and Brovey transform are inappropriate for the identification and extraction of oyster culture floating raft.
【Fund】: 农业部渔业遥感科学观测实验站开放课题(OFSOESFRS201505);; 国家自然科学基金项目(31602206);; 上海市自然科学基金项目(16ZR1444700);; 中国水产科学研究院东海水产研究所中央级公益性科研院所基本科研业务费项目(2016T05)
【CateGory Index】: TP751
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