LQR_CARVER_SET_ENERGY_FUNCT(3)
NAME
lqr_carver_bias_set_energy_function_builtin - set a builtin energy
function for a LqrCarver object
SYNOPSIS
#include <lqr.h> LqrRetVal lqr_carver_set_energy_function_builtin(LqrCarver* carver, LqrEnergyFuncBuiltinType ef_ind);
DESCRIPTION
The function lqr_carver_set_energy_function_builtin allows to pick a builtin energy function for the LqrCarver object pointed to by carver.
The possible values for ef_ind are:
- LQR_EF_GRAD_XABS
- absolute value of the brightness gradient in the direction of the
rescaling (this is the default) - LQR_EF_GRAD_SUMABS
- sum of absolute values of the brightness gradients in both
directions - LQR_EF_GRAD_NORM
- norm of the brightness gradient
- LQR_EF_LUMA_GRAD_XABS
- absolute value of the luma gradient in the direction of the
rescaling - LQR_EF_LUMA_GRAD_SUMABS
- sum of absolute values of the luma gradients in both directions
- LQR_EF_LUMA_GRAD_NORM
- norm of the luma gradient
- LQR_EF_NULL
- null
- All of the above gradient functions have a radius of 1 pixel.
RETURN VALUE
The return value follows the Liquid Rescale library signalling system.
SEE ALSO
lqr_carver_set_energy_function(3), lqr_carver_get_energy(3)
COPYRIGHT
- Copyright (C) 2007-2009 Carlo Baldassi