gauss_sample_image - Takes gaussian samples of an image
Example compile flags (system dependent):
-DLINUX_X86_64 -DLINUX_X86_64_OPTERON -DGNU_COMPILER
-lKJB -lfftw3 -lgsl -lgslcblas -ljpeg -lSVM -lstdc++ -lpthread -lSLATEC -lg2c -lacml -lacml_mv -lblas -lg2c -lncursesw
const KJB_image *in_ip,
This routine reduces image resolution by taking averages with Gaussian
weights. The 'resolution' argument is equal to the linear shrinkage factor.
For example, if resolution=3 then the output image will have one-third the
number of rows and one-third the number of columns of the input image.
This is also known as the decimation factor.
The 'sigma' argument obviously controls the antialiasing kernel size.
As a rule of thumb, the value of sigma should be around 0.5 to 1.0 times
the value of resolution.
If *out_ipp is NULL, then an image of the appropriate size is created, if
it is the wrong size, then it is resized, and if it is the right size, the
storage is recycled.
This software is not adequatedly tested. It is recomended that
results are checked independantly where appropriate.