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Assessment of Thematic Mapper Band-to-band Registration by the Block Correlation MethodThe design of the Thematic Mapper (TM) multispectral radiometer makes it susceptible to band-to-band misregistration. To estimate band-to-band misregistration a block correlation method is employed. This method is chosen over other possible techniques (band differencing and flickering) because quantitative results are produced. The method correlates rectangular blocks of pixels from one band against blocks centered on identical pixels from a second band. The block pairs are shifted in pixel increments both vertically and horizontally with respect to each other and the correlation coefficient for each shift position is computed. The displacement corresponding to the maximum correlation is taken as the best estimate of registration error for each block pair. Subpixel shifts are estimated by a bi-quadratic interpolation of the correlation values surrounding the maximum correlation. To obtain statistical summaries for each band combination post processing of the block correlation results performed. The method results in estimates of registration error that are consistent with expectations.
Document ID
19840022327
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Card, D. H.
(NASA Ames Research Center Moffett Field, CA, United States)
Wrigley, R. C.
(NASA Ames Research Center Moffett Field, CA, United States)
Mertz, F. C.
(Technicolor Government Services, Inc., Moffett Field Calif., United States)
Hall, J. R.
(Technicolor Government Services, Inc., Moffett Field Calif., United States)
Date Acquired
August 12, 2013
Publication Date
July 1, 1984
Publication Information
Publication: NASA. Goddard Space Flight Center LANDSAT-4 Sci. Invest. Summ., Including Dec. 1983 Workshop Results, Vol. 2
Subject Category
Earth Resources And Remote Sensing
Accession Number
84N30396
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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