# NAME

project_vector - Projects RGB vector into a 2-D space
# SYNOPSIS

#include "c/c_projection.h"
Example compile flags (system dependent):
-DLINUX_X86_64 -DLINUX_X86_64_OPTERON -DGNU_COMPILER
-I/home/kobus/include
-L/home/kobus/misc/load/linux_x86_64_opteron -L/usr/lib/x86_64-linux-gnu
-lKJB -lfftw3 -lgsl -lgslcblas -ljpeg -lSVM -lstdc++ -lpthread -lSLATEC -lg2c -lacml -lacml_mv -lblas -lg2c -lncursesw
int project_vector
(
Vector **output_vpp,
const Vector *input_vp,
Projection_method projection_method
);

# DESCRIPTION

This routine projects RGB data into a 2-D space, normally a chromaticity
space. The projection method used is specified by the argument
"projection_method". This argument should be one of DIVIDE_BY_RED,
DIVIDE_BY_GREEN, DIVIDE_BY_BLUE, DIVIDE_BY_SUM, ONTO_RG_PLANE, ONTO_GB_PLANE,
and ONTO_RB_PLANE.
# RETURNS

NO_ERROR on success and ERROR on failure. The usuall reason for failure is
that the denominator is less than DBL_EPSILON.
# NOTE

This routine offers simpler semantics to similar (but not identical)
operation as get_projection_vector(). The semantics differ if the
componants are non-positive.
# WARNING

I am still working on this library. Be prepared for change!
# DISCLAIMER

This software is not adequatedly tested. It is recomended that
results are checked independantly where appropriate.
# AUTHOR

Kobus Barnard
# DOCUMENTER

Kobus Barnard
# SEE ALSO

get_projection_matrix
,
get_divide_by_sum_projection_matrix
,
project_matrix
,
divide_by_sum_project_matrix
,
project_matrix_onto_unit_sphere
,
get_projection_vector
,
back_project_matrix
,
back_project_vector