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lqr_carver_bias_set_energy_function_builtin
Langue: en
Version: 10 Maj 2009 (debian - 07/07/09)
Section: 3 (Bibliothèques de fonctions)
NAME
lqr_carver_bias_set_energy_function_builtin - set a builtin energy function for a LqrCarver objectSYNOPSIS
#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)
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