Input Filters provide a means to remove annotation and white-space when
interpolating color models (e.g., when using the Images -> Solid program) and
plotting vertical image pixels as color-coded spheres (e.g., when using the
Vertical Images -> XYZC program). These programs sample the images
based on the Project Dimensions. Specifically; a temporary voxel model is
created based on the Project Dimensions. The voxels within this model are
then assigned color values based on the average color for all pixels that are
contained within that voxel. Upon completion, the average colors for all
voxels that contain one or more pixels are used as input for the modeling or
(Images->Solid Program): The source images (Figure A) contain black
annotation and extraneous white that “contaminates” the color model
interpolation (Figure B). Removing these colors produces a more useful
model (Figure C).
(Images—Solid Program): The Color Output Filter is used to restrict the
output to points within a specified color range. This example shown below
depicts the results when a red output filter with a tolerance of 150 is used to
extract selected pixels from the output model.
(Images->XYZG): This example depicts the original images (Figure A) and
color-coded spheres depicting the sampled pixels without omitting any colors
(Figure B) and color-coded spheres depicting all colors except for black and
white (Figure C). Note how the black pattern symbols, fault polylines,
formation contacts, and white “air” within Figure C have been omitted.
(Images->XYZG): The example shown below depicts the results (Figure A)
when a red output filter with a tolerance of 150 is used to extract pixels from
two images (Figure B).