Figure C. The image processing tool, showing some simple operations on an MRI brain image.
1: original image. 2: rotation through 45o. 3: edge detection. 4: smoothing. This figure also illustrates the use of a color scale.
The image processing tool accesses 45 functions via a
command line interface. Built-in image processing functions include: arithmetic operations, trig., exponential and power functions, reflection, rotations, shift, smoothing and edge enhancement, among others. A macro
facility allows multiple processing commands to be saved in a file and executed in sequence. Fourier transform and projection reconstruction routines are also available to allow off line processing of MRI or CT raw
data. Some of the simple image processing operations are shown in figure C
, which also illustrates one of the optional color display scales.