Adaptive Reconstruction Of AVHRR NVI Sequential Imagery off Korean Peninsula

  • Lee, Sang-Hoon (Department of Industrial Engineering, Kyung Won University) ;
  • Kim, Kyung-Sook (Division of Global Environmental Information System Engineering Research Institute Korea Institute of Science and Technology)
  • Published : 1994.06.01


Multitemporal analysis with remotely sensed data is complicated by numerous intervening factors, including atmospheric attenuation and occurrence of clouds that obscure the relationship between ground and satellite observed spectral measurements. A reconstruction system was developed to increase the discrimination capability for imagery that has been modified by residual dffects resulting from imperfect sensing of the target and by atmospheric attenuation of the signal. Utilizing temporal information based on an adaptive timporal filter, it recovers missing measurements resulting from cloud cover and sensor noise and enhances the imagery. The temporal filter effectively tracks a systematic trend in remote sensing data by using a polynomial model. The reconstruction system were applied to the AVHRR data collected over Korean Peninsula. The results show that missing measurements are typically recovered successfully and the temporal trend in vegetation change is exposed clearly in the reconstructed series.



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