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Remote Sensing Technology and Application
Assessments of Fusion Methods Using WorldView-2 SatelliteImages for Coastal Oyster Culture Observation
Zhou Weifeng1,2,Cao Li1,2,Li Xiaoshu3,Cheng Tianfei1
(1.Key Laboratory of Fishery Resources Remote Sensing and Information Technology,Chinese
Academy of Fishery Sciences,Shanghai 200090,China;2.School of Mathematics,
Physics and Information Science,Zhejiang Ocean University,Zhoushan 316004,China;
3.Scientific Observing and Experimental Station of Fishery Remote Sensing,Ministryof Agriculture,Beijing 100041,China)
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Abstract  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.
Key words:  WorldView-2 image      Oyster culture area      Image fusion     
Received:  19 January 2017      Published:  16 March 2018
TP 751  
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Zhou Weifeng
Cao Li
Li Xiaoshu
Cheng Tianfei

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Zhou Weifeng,Cao Li,Li Xiaoshu,Cheng Tianfei. Assessments of Fusion Methods Using WorldView-2 SatelliteImages for Coastal Oyster Culture Observation. Remote Sensing Technology and Application, 2018, 33(1): 103-109.

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