Transcription of DIGITAL IMAGE PROCESSING - wamis.org
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DIGITAL IMAGE PROCESSING - wamis.org
DIGITAL IMAGE PROCESSINGM inakshi KumarPhotogrammetry and Remote Sensing DivisionIndian Institute of Remote Sensing, Dehra DunAbstract : This paper describes the basic technological aspects of DIGITAL ImageProcessing with special reference to satellite IMAGE PROCESSING . Basically, all satelliteimage- PROCESSING operations can be grouped into three categories: ImageRectification and Restoration, Enhancement and Information Extraction. The formerdeals with initial PROCESSING of raw IMAGE data to correct for geometric distortion,to calibrate the data radiometrically and to eliminate noise present in the enhancement procedures are applied to IMAGE data in order to effectively displaythe data for subsequent visual interpretation.
Figure 2: False Color Composite (FCC) of IRS : LISS II Poanta area IMAGE RECTIFICATION AND REGISTRATION Geometric distortions manifest themselves as errors in the position of a pixel relative to other pixels in the scene and with respect to their absolute position within some defined map projection. If left uncorrected, these
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