!----------------------------------------------------------------------! !----------------------------------------------------------------------! ! ! ! Irregular_Polygon_Clip [bitmap_clip.eas] ! ! ! ! ! ! This simple script used with the MODEL command in PCI EASI ! ! will clip the unnecessary excess portions of an airphoto mosaic ! ! to an irregular buffered shape around the study area. ! ! ! ! The working file 'working-file.pix' has the existing ! ! mosaic image located in the first three channels, ! ! an existing irregular shaped polygon bitmap and ! ! three empty 8 bit channels. ! ! ! ! %%2 is the bitmap mask of the irregular shape ! ! %1, %2, %3 are the RGB existing image channels ! ! %4, %5, %6 will be the new modeled RGB image channels ! ! the RGB value of 255, 255, 255 will set the background to white ! ! ! ! Simply change the file name to use this script with a different ! ! file and ensure that the channels and segments are setup the same ! ! ! !----------------------------------------------------------------------! !----------------------------------------------------------------------! !-------------------------------- ! Set up and run the model !-------------------------------- MODEL ON "working-file.pix" OVER dbiw if %%2 = 1 then %4 = %1; %5 = %2; %6 = %3; else %4 = 255; %5 = 255; %6 = 255; endif; ENDMODEL !---------------------------------------------- ! Export the resultant channels to a new file !---------------------------------------------- FILI = "working-file.pix FILO = "mosaic_clipped.tif DBIW = DBIC = 4,5,6 DBIB = DBVS = DBLUT = DBPCT = FTYPE = "TIF FOPTIONS = "" RUN FEXPORT
bitmap_clip
PCI Geomatics -
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