Geoscience Reference
In-Depth Information
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fIGURe 26.8
Three-dimensional image slice of radargram data taken prior to water application. Crosshair
is at an alluvium interface fissure.
Noted is the fact that upper strata will distort and mask features of the lower strata, resulting in
three-dimensional renderings that may not approach the physical realism typical of modern medical
imaging technologies.
Higher-end raster graphical editors allow importing of GPR data for better visualizations and
graphical manipulations. Returning GPR waveforms are sampled as 8-, 16-, or 32-bit binary data and
recorded in matrix format. For converting to an image graphic, Figure 26.9a shows Adobe Photo-
shop CS2 (Adobe Systems, Inc., San Jose, CA) RAW File Open As window, illustrating importing
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(b)
fIGURe 26.9
(a) Adobe Photoshop FILE OPEN AS window for importing RAW GPR data, and (b) example
INDEXED Color ramp for applying 256-color levels. (Shown is its conversion to 8-bit gray scale to illustrate
resolution importance of 256 color scale versus 256 different levels of gray.)
