snohalo's parameter is now called blur
This commit is contained in:
Nicolas Robidoux
parent
4c243c72d6
commit
1b84cf61c0
@ -82,7 +82,7 @@
|
||||
/* Properties.
|
||||
*/
|
||||
enum {
|
||||
PROP_SHARPENING = 1,
|
||||
PROP_BLUR = 1,
|
||||
PROP_LAST
|
||||
};
|
||||
|
||||
@ -105,7 +105,7 @@ enum {
|
||||
typedef struct _VipsInterpolateSnohalo1 {
|
||||
VipsInterpolate parent_object;
|
||||
|
||||
double sharpening;
|
||||
double blur;
|
||||
} VipsInterpolateSnohalo1;
|
||||
|
||||
typedef struct _VipsInterpolateSnohalo1Class {
|
||||
@ -144,32 +144,8 @@ snohalo1( const double theta,
|
||||
double* restrict r2,
|
||||
double* restrict r3 )
|
||||
{
|
||||
/*
|
||||
* This function calculates the missing three double density pixel
|
||||
* values. The caller does bilinear interpolation on them and
|
||||
* dos_two.
|
||||
*/
|
||||
/*
|
||||
* THE STENCIL OF INPUT VALUES:
|
||||
*
|
||||
* Snohalo's stencil is the same as, say, Catmull-Rom, with the
|
||||
* exception that the four corner values are not used:
|
||||
*
|
||||
* (ix,iy-1) (ix+1,iy-1)
|
||||
* = uno_two = uno_thr
|
||||
*
|
||||
* (ix-1,iy) (ix,iy) (ix+1,iy) (ix+2,iy)
|
||||
* = dos_one = dos_two = dos_thr = dos_fou
|
||||
*
|
||||
* (ix-1,iy+1) (ix,iy+1) (ix+1,iy+1) (ix+2,iy+1)
|
||||
* = tre_one = tre_two = tre_thr = tre_fou
|
||||
*
|
||||
* (ix,iy+2) (ix+1,iy+2)
|
||||
* = qua_two = qua_thr
|
||||
*/
|
||||
|
||||
const double beta = 1. + -.5 * theta;
|
||||
const double gamma = .125 * theta;
|
||||
const double gamma = .125 * theta;
|
||||
|
||||
/*
|
||||
* Computation of the blurred pixel values:
|
||||
@ -188,6 +164,14 @@ snohalo1( const double theta,
|
||||
const double tre_thr_plus_dos_fou_in = tre_thr_in + dos_fou_in;
|
||||
const double tre_fou_plus_dos_fiv_in = tre_fou_in + dos_fiv_in;
|
||||
|
||||
const double qua_one_plus_tre_two_in = qua_one_in + tre_two_in;
|
||||
const double qua_two_plus_tre_thr_in = qua_two_in + tre_thr_in;
|
||||
const double qua_thr_plus_tre_fou_in = qua_thr_in + tre_fou_in;
|
||||
const double qua_fou_plus_tre_fiv_in = qua_fou_in + tre_fiv_in;
|
||||
|
||||
const double cin_two_plus_qua_thr_in = cin_two_in + qua_thr_in;
|
||||
const double cin_thr_plus_qua_fou_in = cin_thr_in + qua_fou_in;
|
||||
|
||||
const double uno_two =
|
||||
beta * uno_two_in
|
||||
+
|
||||
@ -198,11 +182,6 @@ snohalo1( const double theta,
|
||||
+
|
||||
( uno_two_plus_zer_thr_in + dos_thr_plus_uno_fou_in ) * gamma;
|
||||
|
||||
const double qua_one_plus_tre_two_in = qua_one_in + tre_two_in;
|
||||
const double qua_two_plus_tre_thr_in = qua_two_in + tre_thr_in;
|
||||
const double qua_thr_plus_tre_fou_in = qua_thr_in + tre_fou_in;
|
||||
const double qua_fou_plus_tre_fiv_in = qua_fou_in + tre_fiv_in;
|
||||
|
||||
const double dos_one =
|
||||
beta * dos_one_in
|
||||
+
|
||||
@ -223,9 +202,6 @@ snohalo1( const double theta,
|
||||
+
|
||||
( dos_thr_plus_uno_fou_in + tre_fou_plus_dos_fiv_in ) * gamma;
|
||||
|
||||
const double cin_two_plus_qua_thr_in = cin_two_in + qua_thr_in;
|
||||
const double cin_thr_plus_qua_fou_in = cin_thr_in + qua_fou_in;
|
||||
|
||||
const double tre_one =
|
||||
beta * tre_one_in
|
||||
+
|
||||
@ -256,14 +232,6 @@ snohalo1( const double theta,
|
||||
+
|
||||
( qua_two_plus_tre_thr_in + cin_thr_plus_qua_fou_in ) * gamma;
|
||||
|
||||
/*
|
||||
* Computation of the nonlinear slopes: If two consecutive pixel
|
||||
* value differences have the same sign, the smallest one (in
|
||||
* absolute value) is taken to be the corresponding slope; if the
|
||||
* two consecutive pixel value differences don't have the same sign,
|
||||
* the corresponding slope is set to 0. In other words, apply minmod
|
||||
* to comsecutive differences.
|
||||
*/
|
||||
/*
|
||||
* Dos(s) horizontal differences:
|
||||
*/
|
||||
@ -289,6 +257,9 @@ snohalo1( const double theta,
|
||||
const double deux_thr = tre_thr - dos_thr;
|
||||
const double troi_thr = qua_thr - tre_thr;
|
||||
|
||||
/*
|
||||
* Apply minmod to comsecutive differences:
|
||||
*/
|
||||
/*
|
||||
* Products and differences useful for minmod:
|
||||
*/
|
||||
@ -397,7 +368,7 @@ snohalo1( const double theta,
|
||||
const PEL* restrict pin, \
|
||||
const int bands, \
|
||||
const int lskip, \
|
||||
const double sharpening, \
|
||||
const double blur, \
|
||||
const double relative_x, \
|
||||
const double relative_y ) \
|
||||
{ \
|
||||
@ -480,7 +451,7 @@ snohalo1( const double theta,
|
||||
double four_times_dostre_two; \
|
||||
double eight_times_dostre_twothr; \
|
||||
\
|
||||
snohalo1( sharpening, \
|
||||
snohalo1( blur, \
|
||||
in[zer_two_shift], in[zer_thr_shift], \
|
||||
in[uno_one_shift], in[uno_two_shift], \
|
||||
in[uno_thr_shift], in[uno_fou_shift], \
|
||||
@ -578,7 +549,7 @@ vips_interpolate_snohalo1_interpolate( VipsInterpolate* restrict interpolate,
|
||||
p, \
|
||||
bands, \
|
||||
lskip, \
|
||||
snohalo1->sharpening, \
|
||||
snohalo1->blur, \
|
||||
relative_x, \
|
||||
relative_y );
|
||||
|
||||
@ -639,7 +610,7 @@ vips_interpolate_snohalo1_class_init( VipsInterpolateSnohalo1Class *klass )
|
||||
gobject_class->get_property = vips_object_get_property;
|
||||
|
||||
object_class->nickname = "snohalo1";
|
||||
object_class->description = _( "Strong antialiasing" );
|
||||
object_class->description = _( "Nohalo level 1 with antialiasing blur" );
|
||||
|
||||
interpolate_class->interpolate =
|
||||
vips_interpolate_snohalo1_interpolate;
|
||||
@ -648,16 +619,16 @@ vips_interpolate_snohalo1_class_init( VipsInterpolateSnohalo1Class *klass )
|
||||
/* Create properties.
|
||||
*/
|
||||
pspec =
|
||||
g_param_spec_double( "sharpening",
|
||||
_( "Sharpening" ),
|
||||
_( "Antialiasing" ),
|
||||
g_param_spec_double( "blur",
|
||||
_( "Blur" ),
|
||||
_( "Amount of diagonal straightening blur" ),
|
||||
0, 4, 1,
|
||||
(GParamFlags) G_PARAM_READWRITE );
|
||||
g_object_class_install_property( gobject_class,
|
||||
PROP_SHARPENING, pspec );
|
||||
PROP_BLUR, pspec );
|
||||
vips_object_class_install_argument( object_class, pspec,
|
||||
VIPS_ARGUMENT_SET_ONCE,
|
||||
G_STRUCT_OFFSET( VipsInterpolateSnohalo1, sharpening ) );
|
||||
G_STRUCT_OFFSET( VipsInterpolateSnohalo1, blur ) );
|
||||
|
||||
}
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user