/* 1st order tb mosaic.
*/
int
im_tbmosaic1( IMAGE *ref, IMAGE *sec, IMAGE *out,
int bandno,
int xr1, int yr1, int xs1, int ys1,
int xr2, int yr2, int xs2, int ys2,
int halfcorrelation, int halfarea,
int balancetype,
int mwidth )
{
return( rotjoin_search( ref, sec, out, im__tbmerge1,
bandno,
xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
halfcorrelation, halfarea, balancetype, mwidth ) );
}
/**
* im_tbmosaic1:
* @ref: reference image
* @sec: secondary image
* @out: output image
* @bandno: band to search for features
* @xr1: first reference tie-point
* @yr1: first reference tie-point
* @xs1: first secondary tie-point
* @ys1: first secondary tie-point
* @xr2: second reference tie-point
* @yr2: second reference tie-point
* @xs2: second secondary tie-point
* @ys2: second secondary tie-point
* @hwindowsize: half window size
* @hsearchsize: half search size
* @balancetype: no longer used
* @mwidth: maximum blend width
*
* This operation joins two images top-bottom (with @ref on the top)
* given an approximate pair of tie-points. @sec is scaled and rotated as
* necessary before the join.
*
* Before performing the transformation, the tie-points are improved by
* searching band @bandno in an area of @sec of size @hsearchsize for a
* match of size @hwindowsize to @ref.
*
* @mwidth limits the maximum height of the
* blend area. A value of "-1" means "unlimited". The two images are blended
* with a raised cosine.
*
* Pixels with all bands equal to zero are "transparent", that
* is, zero pixels in the overlap area do not contribute to the merge.
* This makes it possible to join non-rectangular images.
*
* If the number of bands differs, one of the images
* must have one band. In this case, an n-band image is formed from the
* one-band image by joining n copies of the one-band image together, and then
* the two n-band images are operated upon.
*
* The two input images are cast up to the smallest common type (see table
* Smallest common format in
* <link linkend="VIPS-arithmetic">arithmetic</link>).
*
* See also: im_lrmosaic1(), im_tbmerge(), im_insert(), im_global_balance().
*
* Returns: 0 on success, -1 on error
*/
int
im_tbmosaic1( IMAGE *ref, IMAGE *sec, IMAGE *out,
int bandno,
int xr1, int yr1, int xs1, int ys1,
int xr2, int yr2, int xs2, int ys2,
int hwindowsize, int hsearchsize,
int balancetype,
int mwidth )
{
return( rotjoin_search( ref, sec, out, im__tbmerge1,
bandno,
xr1, yr1, xs1, ys1, xr2, yr2, xs2, ys2,
hwindowsize, hsearchsize, balancetype, mwidth ) );
}
static int
vips_mosaic1_build( VipsObject *object )
{
VipsMosaic1 *mosaic1 = (VipsMosaic1 *) object;
joinfn jfn;
g_object_set( mosaic1, "out", vips_image_new(), NULL );
if( VIPS_OBJECT_CLASS( vips_mosaic1_parent_class )->build( object ) )
return( -1 );
if( !mosaic1->interpolate )
mosaic1->interpolate = vips_interpolate_new( "bilinear" );
jfn = mosaic1->direction == VIPS_DIRECTION_HORIZONTAL ?
im__lrmerge1 : im__tbmerge1;
if( mosaic1->search ) {
if( rotjoin_search( mosaic1->ref, mosaic1->sec, mosaic1->out,
jfn,
mosaic1->bandno,
mosaic1->xr1, mosaic1->yr1, mosaic1->xs1, mosaic1->ys1,
mosaic1->xr2, mosaic1->yr2, mosaic1->xs2, mosaic1->ys2,
mosaic1->hwindow, mosaic1->harea,
0,
mosaic1->mblend ) )
return( -1 );
}
else {
if( rotjoin( mosaic1->ref, mosaic1->sec, mosaic1->out,
jfn,
mosaic1->xr1, mosaic1->yr1, mosaic1->xs1, mosaic1->ys1,
mosaic1->xr2, mosaic1->yr2, mosaic1->xs2, mosaic1->ys2,
mosaic1->mblend ) )
return( -1 );
}
return( 0 );
}
