redo im_cntlines() as a class
This commit is contained in:
John Cupitt
parent
9fbfbb3e48
commit
cb96ed814e
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@ -37,6 +37,7 @@
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- vips_colourspace() allows B_W, GREY16, RGB16 as source / target
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- added vips_thread_shutdown(), thanks Lovell
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- vips_linear() has a uchar output mode
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- redone im_cntlines() as a class
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9/1/14 started 7.36.6
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- fix some clang compiler warnings
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@ -4488,3 +4488,12 @@ im_phasecor_fft( IMAGE *in1, IMAGE *in2, IMAGE *out )
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return( 0 );
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}
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int
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im_cntlines( VipsImage *im, double *nolines, int flag )
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{
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return( vips_countlines( im, nolines,
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flag == 0 ?
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VIPS_DIRECTION_HORIZONTAL : VIPS_DIRECTION_VERTICAL,
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NULL ) );
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}
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@ -83,8 +83,6 @@ int vips_sharpen( VipsImage *in, VipsImage **out, ... )
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int vips_gaussblur( VipsImage *in, VipsImage **out, int radius, ... )
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__attribute__((sentinel));
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void vips_convolution_operation_init( void );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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@ -287,6 +287,8 @@ void vips_colour_operation_init( void );
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void vips_histogram_operation_init( void );
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void vips_freqfilt_operation_init( void );
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void vips_create_operation_init( void );
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void vips_morphology_operation_init( void );
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void vips_convolution_operation_init( void );
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guint64 vips__parse_size( const char *size_string );
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@ -38,13 +38,16 @@
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extern "C" {
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#endif /*__cplusplus*/
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int vips_countlines( VipsImage *in, double *nolines,
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VipsDirection direction, ... )
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__attribute__((sentinel));
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int im_rank( VipsImage *in, VipsImage *out, int width, int height, int index );
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int im_cntlines( VipsImage *im, double *nolines, int flag );
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int im_zerox( VipsImage *in, VipsImage *out, int sign );
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int im_label_regions( VipsImage *test, VipsImage *mask, int *segments );
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@ -975,6 +975,8 @@ int im_disp_ps( VipsImage *in, VipsImage *out );
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int im_fractsurf( VipsImage *out, int size, double frd );
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int im_phasecor_fft( VipsImage *in1, VipsImage *in2, VipsImage *out );
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int im_cntlines( VipsImage *im, double *nolines, int flag );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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@ -271,6 +271,7 @@ vips__init( const char *argv0 )
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vips_histogram_operation_init();
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vips_convolution_operation_init();
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vips_freqfilt_operation_init();
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vips_morphology_operation_init();
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/* Load up any plugins in the vips libdir. We don't error on failure,
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* it's too annoying to have VIPS refuse to start because of a broken
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@ -1,7 +1,8 @@
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noinst_LTLIBRARIES = libmorphology.la
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libmorphology_la_SOURCES = \
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im_cntlines.c \
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morphology.c \
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countlines.c \
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hitmiss.c\
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im_rank.c \
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im_zerox.c \
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@ -0,0 +1,185 @@
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/* count lines
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*
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* Copyright: 1990, N. Dessipris.
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*
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* Author: Nicos Dessipris
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* Written on: 02/05/1990
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* Modified on :
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*
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* 19/9/95 JC
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* - tidied up
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* 23/10/10
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* - gtk-doc
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* 17/1/14
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* - redone as a class, now just a convenience function
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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/*
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#define VIPS_DEBUG
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <vips/vips.h>
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#include <vips/internal.h>
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#include <vips/debug.h>
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#include "pmorphology.h"
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typedef struct _VipsCountlines {
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VipsMorphology parent_instance;
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double nolines;
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VipsDirection direction;
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} VipsCountlines;
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typedef VipsMorphologyClass VipsCountlinesClass;
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G_DEFINE_TYPE( VipsCountlines, vips_countlines, VIPS_TYPE_MORPHOLOGY );
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static int
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vips_countlines_build( VipsObject *object )
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{
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VipsMorphology *morphology = VIPS_MORPHOLOGY( object );
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VipsCountlines *countlines = (VipsCountlines *) object;
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VipsImage *in = morphology->in;
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VipsImage **t = (VipsImage **) vips_object_local_array( object, 7 );
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double nolines;
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if( VIPS_OBJECT_CLASS( vips_countlines_parent_class )->build( object ) )
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return( -1 );
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switch( countlines->direction ) {
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case VIPS_DIRECTION_HORIZONTAL:
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if( !(t[0] = vips_image_new_matrixv( 1, 2, -1.0, 1.0 )) ||
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vips_moreeq_const1( in, &t[1], 128, NULL ) ||
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vips_conv( t[1], &t[2], t[0], NULL ) ||
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vips_project( t[2], &t[3], &t[4], NULL ) ||
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vips_avg( t[3], &nolines, NULL ) )
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return( -1 );
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break;
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case VIPS_DIRECTION_VERTICAL:
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if( !(t[0] = vips_image_new_matrixv( 2, 1, -1.0, 1.0 )) ||
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vips_moreeq_const1( in, &t[1], 128, NULL ) ||
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vips_conv( t[1], &t[2], t[0], NULL ) ||
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vips_project( t[2], &t[3], &t[4], NULL ) ||
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vips_avg( t[4], &nolines, NULL ) )
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return( -1 );
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break;
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default:
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g_assert( 0 );
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/* Keep -Wall happy.
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*/
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return( 0 );
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}
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g_object_set( object, "nolines", nolines / 255.0, NULL );
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return( 0 );
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}
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static void
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vips_countlines_class_init( VipsCountlinesClass *class )
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS( class );
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VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
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VIPS_DEBUG_MSG( "vips_countlines_class_init\n" );
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gobject_class->set_property = vips_object_set_property;
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gobject_class->get_property = vips_object_get_property;
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vobject_class->nickname = "countlines";
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vobject_class->description = _( "count lines in an image" );
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vobject_class->build = vips_countlines_build;
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VIPS_ARG_DOUBLE( class, "nolines", 2,
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_( "Nolines" ),
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_( "Number of lines" ),
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VIPS_ARGUMENT_REQUIRED_OUTPUT,
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G_STRUCT_OFFSET( VipsCountlines, nolines ),
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0, 10000000, 0.0 );
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VIPS_ARG_ENUM( class, "direction", 3,
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_( "direction" ),
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_( "Countlines left-right or up-down" ),
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VIPS_ARGUMENT_REQUIRED_INPUT,
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G_STRUCT_OFFSET( VipsCountlines, direction ),
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VIPS_TYPE_DIRECTION, VIPS_DIRECTION_HORIZONTAL );
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}
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static void
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vips_countlines_init( VipsCountlines *countlines )
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{
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}
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/**
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* vips_countlines:
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* @in: input image
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* @nolines: output average number of lines
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* @direction: count lines horizontally or vertically
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* @...: %NULL-terminated list of optional named arguments
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*
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* Function which calculates the number of transitions
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* between black and white for the horizontal or the vertical
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* direction of an image. black<128 , white>=128
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* The function calculates the number of transitions for all
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* Xsize or Ysize and returns the mean of the result
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* Input should be one band, 8-bit.
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*
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* See also: vips_morph(), vips_zerox(), vips_conv().
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*
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* Returns: 0 on success, -1 on error.
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*/
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int
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vips_countlines( VipsImage *in, double *nolines,
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VipsDirection direction, ... )
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{
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va_list ap;
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int result;
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va_start( ap, direction );
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result = vips_call_split( "countlines", ap, in, nolines, direction );
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va_end( ap );
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return( result );
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}
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@ -1,131 +0,0 @@
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/* count lines
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*
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* Copyright: 1990, N. Dessipris.
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*
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* Author: Nicos Dessipris
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* Written on: 02/05/1990
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* Modified on :
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*
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* 19/9/95 JC
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* - tidied up
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* 23/10/10
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* - gtk-doc
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*/
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/*
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This file is part of VIPS.
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VIPS is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA
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*/
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/*
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These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <vips/intl.h>
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#include <stdio.h>
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#include <vips/vips.h>
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/**
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* im_cntlines:
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* @im: input #IMAGE
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* @nolines: output average number of lines
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* @flag: 0 horizontal, 1 vertical
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*
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* Function which calculates the number of transitions
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* between black and white for the horizontal or the vertical
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* direction of an image. black<128 , white>=128
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* The function calculates the number of transitions for all
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* Xsize or Ysize and returns the mean of the result
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* Input should be one band, 8-bit.
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*
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* See also: im_erode(), im_zerox(), im_conv().
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*
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* Returns: 0 on success, -1 on error.
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*/
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int
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im_cntlines( IMAGE *im, double *nolines, int flag )
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{
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int x, y;
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VipsPel *line;
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int cnt;
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if( im_incheck( im ) ||
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im_check_uncoded( "im_cntlines", im ) ||
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im_check_mono( "im_cntlines", im ) ||
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im_check_format( "im_cntlines", im, IM_BANDFMT_UCHAR ) )
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return( -1 );
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if( flag != 0 && flag != 1 ) {
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im_error( "im_cntlines", "%s",
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_( "flag should be 0 (horizontal) or 1 (vertical)" ) );
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return( -1 );
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}
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line = im->data;
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if( flag == 1 ) {
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/* Count vertical lines.
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*/
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for( cnt = 0, y = 0; y < im->Ysize; y++ ) {
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VipsPel *p = line;
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for( x = 0; x < im->Xsize - 1; x++ ) {
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if( p[0] < 128 && p[1] >= 128 )
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cnt++;
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else if( p[0] >= 128 && p[1] < 128 )
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cnt++;
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p++;
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}
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line += im->Xsize;
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}
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*nolines = (float) cnt / (2.0 * im->Ysize);
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}
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else {
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/* Count horizontal lines.
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*/
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for( cnt = 0, y = 0; y < im->Ysize - 1; y++ ) {
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VipsPel *p1 = line;
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VipsPel *p2 = line + im->Xsize;
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for( x = 0; x < im->Xsize; x++ ) {
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if( *p1 < 128 && *p2 >= 128 )
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cnt++;
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else if( *p1 >= 128 && *p2 < 128 )
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cnt++;
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p1++;
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p2++;
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}
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line += im->Xsize;
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}
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*nolines = (float) cnt / (2.0 * im->Xsize);
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}
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return( 0 );
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}
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@ -39,51 +39,6 @@
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#include <vips/vips.h>
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/**
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* SECTION: morphology
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* @short_description: morphological operators, rank filters and related image
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* analysis
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* @see_also: <link linkend="libvips-boolean">boolean</link>
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* @stability: Stable
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* @include: vips/vips.h
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*
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* The morphological functions search images
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* for particular patterns of pixels, specified with the mask argument,
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* either adding or removing pixels when they find a match. They are useful
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* for cleaning up images --- for example, you might threshold an image, and
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* then use one of the morphological functions to remove all single isolated
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* pixels from the result.
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*
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* If you combine the morphological operators with the mask rotators
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* im_rotate_imask45(), for example) and apply them repeatedly, you
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* can achieve very complicated effects: you can thin, prune, fill, open edges,
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* close gaps, and many others. For example, see `Fundamentals of Digital
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* Image Processing' by A. Jain, pp 384-388, Prentice-Hall, 1989 for more
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* ideas.
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*
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* Beware that VIPS reverses the usual image processing convention, by
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* assuming white objects (non-zero pixels) on a black background (zero
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* pixels).
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*
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* The mask you give to the morphological functions should contain only the
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* values 0 (for background), 128 (for don't care) and 255 (for object). The
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* mask must have odd length sides --- the origin of the mask is taken to be
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* the centre value. For example, the mask:
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*
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* 3 3
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* 128 255 128
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* 255 0 255
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* 128 255 128
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*
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* applied to an image with im_erode(), will find all black pixels
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* 4-way connected with white pixels. Essentially, im_dilate()
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* sets pixels in the output if any part of the mask matches, whereas
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* im_erode() sets pixels only if all of the mask matches.
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*
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* See im_andimage(), im_orimage() and im_eorimage()
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* for analogues of the usual set difference and set union operations.
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*/
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/* Args to im_profile.
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*/
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static im_arg_desc profile_args[] = {
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|
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@ -0,0 +1,137 @@
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/* base class for all morphological operations
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*
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* properties:
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* - one input image
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*/
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/*
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Copyright (C) 1991-2005 The National Gallery
|
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|
||||
This library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
#define DEBUG
|
||||
*/
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif /*HAVE_CONFIG_H*/
|
||||
#include <vips/intl.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
|
||||
#include <vips/vips.h>
|
||||
#include <vips/internal.h>
|
||||
|
||||
#include "pmorphology.h"
|
||||
|
||||
/**
|
||||
* SECTION: morphology
|
||||
* @short_description: morphological operators, rank filters and related image
|
||||
* analysis
|
||||
* @see_also: <link linkend="libvips-boolean">boolean</link>
|
||||
* @stability: Stable
|
||||
* @include: vips/vips.h
|
||||
*
|
||||
* The morphological functions search images
|
||||
* for particular patterns of pixels, specified with the mask argument,
|
||||
* either adding or removing pixels when they find a match. They are useful
|
||||
* for cleaning up images --- for example, you might threshold an image, and
|
||||
* then use one of the morphological functions to remove all single isolated
|
||||
* pixels from the result.
|
||||
*
|
||||
* If you combine the morphological operators with the mask rotators
|
||||
* im_rotate_imask45(), for example) and apply them repeatedly, you
|
||||
* can achieve very complicated effects: you can thin, prune, fill, open edges,
|
||||
* close gaps, and many others. For example, see `Fundamentals of Digital
|
||||
* Image Processing' by A. Jain, pp 384-388, Prentice-Hall, 1989 for more
|
||||
* ideas.
|
||||
*
|
||||
* Beware that VIPS reverses the usual image processing convention, by
|
||||
* assuming white objects (non-zero pixels) on a black background (zero
|
||||
* pixels).
|
||||
*
|
||||
* The mask you give to the morphological functions should contain only the
|
||||
* values 0 (for background), 128 (for don't care) and 255 (for object). The
|
||||
* mask must have odd length sides --- the origin of the mask is taken to be
|
||||
* the centre value. For example, the mask:
|
||||
*
|
||||
* 3 3
|
||||
* 128 255 128
|
||||
* 255 0 255
|
||||
* 128 255 128
|
||||
*
|
||||
* applied to an image with im_erode(), will find all black pixels
|
||||
* 4-way connected with white pixels. Essentially, im_dilate()
|
||||
* sets pixels in the output if any part of the mask matches, whereas
|
||||
* im_erode() sets pixels only if all of the mask matches.
|
||||
*
|
||||
* See im_andimage(), im_orimage() and im_eorimage()
|
||||
* for analogues of the usual set difference and set union operations.
|
||||
*/
|
||||
|
||||
G_DEFINE_ABSTRACT_TYPE( VipsMorphology, vips_morphology,
|
||||
VIPS_TYPE_OPERATION );
|
||||
|
||||
static void
|
||||
vips_morphology_class_init( VipsMorphologyClass *class )
|
||||
{
|
||||
GObjectClass *gobject_class = G_OBJECT_CLASS( class );
|
||||
VipsObjectClass *vobject_class = VIPS_OBJECT_CLASS( class );
|
||||
|
||||
gobject_class->set_property = vips_object_set_property;
|
||||
gobject_class->get_property = vips_object_get_property;
|
||||
|
||||
vobject_class->nickname = "morphology";
|
||||
vobject_class->description = _( "morphological operations" );
|
||||
|
||||
/* Inputs set by subclassess.
|
||||
*/
|
||||
|
||||
VIPS_ARG_IMAGE( class, "in", 0,
|
||||
_( "Input" ),
|
||||
_( "Input image argument" ),
|
||||
VIPS_ARGUMENT_REQUIRED_INPUT,
|
||||
G_STRUCT_OFFSET( VipsMorphology, in ) );
|
||||
|
||||
}
|
||||
|
||||
static void
|
||||
vips_morphology_init( VipsMorphology *morphology )
|
||||
{
|
||||
}
|
||||
|
||||
/* Called from iofuncs to init all operations in this dir. Use a plugin system
|
||||
* instead?
|
||||
*/
|
||||
void
|
||||
vips_morphology_operation_init( void )
|
||||
{
|
||||
extern int vips_countlines_get_type( void );
|
||||
|
||||
vips_countlines_get_type();
|
||||
}
|
||||
|
|
@ -0,0 +1,77 @@
|
|||
/* base class for all morphology operations
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
Copyright (C) 1991-2005 The National Gallery
|
||||
|
||||
This library is free software; you can redistribute it and/or
|
||||
modify it under the terms of the GNU Lesser General Public
|
||||
License as published by the Free Software Foundation; either
|
||||
version 2.1 of the License, or (at your option) any later version.
|
||||
|
||||
This library is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
Lesser General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU Lesser General Public
|
||||
License along with this library; if not, write to the Free Software
|
||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
02110-1301 USA
|
||||
|
||||
*/
|
||||
|
||||
/*
|
||||
|
||||
These files are distributed with VIPS - http://www.vips.ecs.soton.ac.uk
|
||||
|
||||
*/
|
||||
|
||||
#ifndef VIPS_PMORPHOLOGY_H
|
||||
#define VIPS_PMORPHOLOGY_H
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif /*__cplusplus*/
|
||||
|
||||
#include <vips/vector.h>
|
||||
|
||||
#define VIPS_TYPE_MORPHOLOGY (vips_morphology_get_type())
|
||||
#define VIPS_MORPHOLOGY( obj ) \
|
||||
(G_TYPE_CHECK_INSTANCE_CAST( (obj), \
|
||||
VIPS_TYPE_MORPHOLOGY, VipsMorphology ))
|
||||
#define VIPS_MORPHOLOGY_CLASS( klass ) \
|
||||
(G_TYPE_CHECK_CLASS_CAST( (klass), \
|
||||
VIPS_TYPE_MORPHOLOGY, VipsMorphologyClass))
|
||||
#define VIPS_IS_MORPHOLOGY( obj ) \
|
||||
(G_TYPE_CHECK_INSTANCE_TYPE( (obj), VIPS_TYPE_MORPHOLOGY ))
|
||||
#define VIPS_IS_MORPHOLOGY_CLASS( klass ) \
|
||||
(G_TYPE_CHECK_CLASS_TYPE( (klass), VIPS_TYPE_MORPHOLOGY ))
|
||||
#define VIPS_MORPHOLOGY_GET_CLASS( obj ) \
|
||||
(G_TYPE_INSTANCE_GET_CLASS( (obj), \
|
||||
VIPS_TYPE_MORPHOLOGY, VipsMorphologyClass ))
|
||||
|
||||
typedef struct _VipsMorphology VipsMorphology;
|
||||
|
||||
struct _VipsMorphology {
|
||||
VipsOperation parent_instance;
|
||||
|
||||
VipsImage *in;
|
||||
|
||||
};
|
||||
|
||||
typedef struct _VipsMorphologyClass {
|
||||
VipsOperationClass parent_class;
|
||||
|
||||
} VipsMorphologyClass;
|
||||
|
||||
GType vips_morphology_get_type( void );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif /*__cplusplus*/
|
||||
|
||||
#endif /*VIPS_PMORPHOLOGY_H*/
|
||||
|
||||
|
||||
Loading…
Reference in New Issue