Merge branch '8.5'
This commit is contained in:
John Cupitt
commit
639b0f5021
@ -12,7 +12,8 @@
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- rename 'disc' as 'memory' and default off
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- add vips_find_trim(), search for non-background areas
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12/6/17 started 8.5.7
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9/6/17 started 8.5.7
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- better smartcrop
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- transform cmyk->rgb automatically on write if there's an embedded profile
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and the saver does not support cmyk
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- fix DPI mixup in svgload ... we were writing images about 20% too large,
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@ -1,6 +1,4 @@
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/* crop an image down to a specified size by removing boring parts
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*
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* Copyright: 2017, J. Cupitt
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*
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* Adapted from sharp's smartcrop feature, with kind permission.
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*
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@ -8,6 +6,8 @@
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* - first version, from sharp
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* 14/3/17
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* - revised attention smartcrop
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* 8/6/17
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* - revised again
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*/
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/*
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@ -159,68 +159,157 @@ vips_smartcrop_entropy( VipsSmartcrop *smartcrop,
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return( 0 );
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}
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/* Calculate sqrt(b1^2 + b2^2 ...)
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*/
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static int
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pythagoras( VipsSmartcrop *smartcrop, VipsImage *in, VipsImage **out )
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{
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VipsImage **t = (VipsImage **)
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vips_object_local_array( VIPS_OBJECT( smartcrop ),
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2 * in->Bands + 1 );
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int i;
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for( i = 0; i < in->Bands; i++ )
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if( vips_extract_band( in, &t[i], i, NULL ) )
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return( -1 );
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for( i = 0; i < in->Bands; i++ )
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if( vips_multiply( t[i], t[i], &t[i + in->Bands], NULL ) )
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return( -1 );
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if( vips_sum( &t[in->Bands], &t[2 * in->Bands], in->Bands, NULL ) ||
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vips_pow_const1( t[2 * in->Bands], out, 0.5, NULL ) )
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return( -1 );
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return( 0 );
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}
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/* FIXME
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*
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* Needed until 8.6, when this is in iofuncs/image.c
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*/
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static VipsImage *
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vips_image_new_from_image( VipsImage *image, const double *c, int n )
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{
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VipsObject *scope = (VipsObject *) vips_image_new();
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VipsImage **t = (VipsImage **) vips_object_local_array( scope, 5 );
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double *ones;
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int i;
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VipsImage *result;
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if( !(ones = VIPS_ARRAY( scope, n, double )) ) {
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g_object_unref( scope );
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return( NULL );
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}
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for( i = 0; i < n; i++ )
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ones[i] = 1.0;
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if( vips_black( &t[0], 1, 1, NULL ) ||
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vips_linear( t[0], &t[1], ones, (double *) c, n, NULL ) ||
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vips_cast( t[1], &t[2], image->BandFmt, NULL ) ||
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vips_embed( t[2], &t[3], 0, 0, image->Xsize, image->Ysize,
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"extend", VIPS_EXTEND_COPY, NULL ) ||
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vips_copy( t[3], &t[4],
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"interpretation", image->Type,
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"xres", image->Xres,
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"yres", image->Yres,
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"xoffset", image->Xoffset,
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"yoffset", image->Yoffset,
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NULL ) ) {
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g_object_unref( scope );
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return( NULL );
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}
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result = t[4];
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g_object_ref( result );
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g_object_unref( scope );
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return( result );
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}
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static VipsImage *
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vips_image_new_from_image1( VipsImage *image, double c )
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{
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return( vips_image_new_from_image( image, (const double *) &c, 1 ) );
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}
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static int
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vips_smartcrop_attention( VipsSmartcrop *smartcrop,
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VipsImage *in, int *left, int *top )
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{
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/* ab ranges for skin colours. Trained with http://humanae.tumblr.com/
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/* From smartcrop.js.
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*/
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static double ab_low[2] = { 3.0, 4.0 };
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static double ab_high[2] = { 22.0, 31.0 };
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static double skin_vector[] = {-0.78, -0.57, -0.44};
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static double ones[] = {1.0, 1.0, 1.0};
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VipsImage **t = (VipsImage **)
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vips_object_local_array( VIPS_OBJECT( smartcrop ), 24 );
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double hshrink;
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double vshrink;
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double hscale;
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double vscale;
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double sigma;
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double max;
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int x_pos;
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int y_pos;
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if( !(t[21] = vips_image_new_matrixv( 3, 3,
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-1.0, 0.0, 1.0, -2.0, 0.0, 2.0, -1.0, 0.0, 1.0 )) )
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return( -1 );
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if( vips_rot( t[21], &t[22], VIPS_ANGLE_D90, NULL ) )
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return( -1 );
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/* Convert to LAB and just use the first three bands.
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/* Simple edge detect.
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*/
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if( vips_colourspace( in, &t[0], VIPS_INTERPRETATION_LAB, NULL ) ||
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if( !(t[21] = vips_image_new_matrixv( 3, 3,
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0.0, -1.0, 0.0,
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-1.0, 4.0, -1.0,
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0.0, -1.0, 0.0 )) )
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return( -1 );
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/* Convert to XYZ and just use the first three bands.
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*/
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if( vips_colourspace( in, &t[0], VIPS_INTERPRETATION_XYZ, NULL ) ||
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vips_extract_band( t[0], &t[1], 0, "n", 3, NULL ) )
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return( -1 );
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/* Sobel edge-detect on L.
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/* Edge detect on Y.
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*/
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if( vips_extract_band( t[1], &t[2], 0, NULL ) ||
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if( vips_extract_band( t[1], &t[2], 1, NULL ) ||
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vips_conv( t[2], &t[3], t[21],
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"precision", VIPS_PRECISION_INTEGER,
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NULL ) ||
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vips_conv( t[2], &t[4], t[22],
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"precision", VIPS_PRECISION_INTEGER,
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NULL ) ||
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vips_abs( t[3], &t[5], NULL ) ||
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vips_abs( t[4], &t[6], NULL ) ||
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vips_add( t[5], t[6], &t[7], NULL ) )
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vips_linear1( t[3], &t[4], 5.0, 0.0, NULL ) ||
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vips_abs( t[4], &t[14], NULL ) )
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return( -1 );
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/* Look for skin colours, plus L > 15.
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/* Look for skin colours. Taken from smartcrop.js.
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*/
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if( vips_extract_band( t[1], &t[8], 1, "n", 2, NULL ) ||
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vips_moreeq_const( t[8], &t[9], ab_low, 2, NULL ) ||
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vips_lesseq_const( t[8], &t[10], ab_high, 2, NULL ) ||
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vips_andimage( t[9], t[10], &t[11], NULL ) ||
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vips_bandand( t[11], &t[12], NULL ) ||
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vips_moreeq_const1( t[2], &t[18], 15.0, NULL ) ||
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vips_andimage( t[12], t[18], &t[19], NULL ) )
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return( -1 );
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if(
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/* Normalise to magnitude of colour in XYZ.
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*/
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pythagoras( smartcrop, t[1], &t[5] ) ||
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vips_divide( t[1], t[5], &t[6], NULL ) ||
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/* Distance from skin point.
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*/
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vips_linear( t[6], &t[7], ones, skin_vector, 3, NULL ) ||
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pythagoras( smartcrop, t[7], &t[8] ) ||
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/* Rescale to 100 - 0 score.
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*/
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vips_linear1( t[8], &t[9], -100.0, 100.0, NULL ) ||
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/* Ignore dark areas.
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*/
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vips_more_const1( t[2], &t[10], 5.0, NULL ) ||
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!(t[11] = vips_image_new_from_image1( t[10], 0.0 )) ||
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vips_ifthenelse( t[10], t[9], t[11], &t[15], NULL ) )
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return( -1 );
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/* Look for saturated areas.
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*/
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if( vips_colourspace( t[1], &t[13],
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if( vips_colourspace( t[1], &t[12],
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VIPS_INTERPRETATION_LCH, NULL ) ||
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vips_extract_band( t[13], &t[14], 1, NULL ) ||
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vips_more_const1( t[14], &t[15], 60.0, NULL ) )
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vips_extract_band( t[12], &t[13], 1, NULL ) ||
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vips_ifthenelse( t[10], t[13], t[11], &t[16], NULL ) )
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return( -1 );
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/* Sum, shrink, blur and find maxpos.
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@ -230,24 +319,26 @@ vips_smartcrop_attention( VipsSmartcrop *smartcrop,
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* area: how large an area we want to consider for the scoring
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* function.
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*/
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hshrink = in->Xsize / 32.0;
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vshrink = in->Ysize / 32.0;
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sigma = sqrt( pow( smartcrop->width / hshrink, 2 ) +
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pow( smartcrop->height / vshrink, 2 ) ) / 6;
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if( vips_add( t[7], t[19], &t[16], NULL ) ||
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vips_add( t[16], t[15], &t[17], NULL ) ||
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vips_shrink( t[17], &t[20], hshrink, vshrink, NULL ) ||
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vips_gaussblur( t[20], &t[23], sigma, NULL ) ||
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vips_max( t[23], &max, "x", &x_pos, "y", &y_pos, NULL ) )
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hscale = 32.0 / in->Xsize;
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vscale = 32.0 / in->Ysize;
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sigma = sqrt( pow( smartcrop->width * hscale, 2 ) +
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pow( smartcrop->height * vscale, 2 ) ) / 10;
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if( vips_sum( &t[14], &t[17], 3, NULL ) ||
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vips_resize( t[17], &t[18], hscale,
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"vscale", vscale,
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"kernel", VIPS_KERNEL_LINEAR,
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NULL ) ||
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vips_gaussblur( t[18], &t[19], sigma, NULL ) ||
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vips_max( t[19], &max, "x", &x_pos, "y", &y_pos, NULL ) )
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return( -1 );
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/* Centre the crop over the max.
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*/
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*left = VIPS_CLIP( 0,
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hshrink * x_pos - smartcrop->width / 2,
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x_pos / hscale - smartcrop->width / 2,
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in->Xsize - smartcrop->width );
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*top = VIPS_CLIP( 0,
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vshrink * y_pos - smartcrop->height / 2,
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y_pos / vscale - smartcrop->height / 2,
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in->Ysize - smartcrop->height );
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return( 0 );
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6
libvips/fuzz/Makefile.am
Normal file
6
libvips/fuzz/Makefile.am
Normal file
@ -0,0 +1,6 @@
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noinst_LTLIBRARIES = libfuzz.la
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libfuzz_la_SOURCES = \
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fuzz_new_from_buffer.c
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AM_CPPFLAGS = -I${top_srcdir}/libvips/include @VIPS_CFLAGS@ @VIPS_INCLUDES@
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64
libvips/fuzz/fuzz_new_from_buffer.c
Normal file
64
libvips/fuzz/fuzz_new_from_buffer.c
Normal file
@ -0,0 +1,64 @@
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/* fuzz targets for libfuzzer
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*
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* 28/7/17
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* - first attempt
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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 <vips/vips.h>
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int
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vips__fuzztarget_new_from_buffer( const guint8 *data, size_t size )
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{
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VipsImage *image;
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double d;
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/* Have one for each format as well.
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*/
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if( !(image = vips_image_new_from_buffer( data, size, "", NULL )) )
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/* libfuzzer does not allow error return.
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*/
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return( 0 );
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if( vips_avg( image, &d, NULL ) )
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return( 0 );
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g_object_unref( image );
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return( 0 );
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}
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@ -187,6 +187,10 @@ int vips__init( const char *argv0 );
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size_t vips__get_sizeof_vipsobject( void );
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int vips_region_prepare_many( struct _VipsRegion **reg, VipsRect *r );
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/* Handy for debugging.
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*/
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int vips__view_image( struct _VipsImage *image );
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#ifdef __cplusplus
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}
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#endif /*__cplusplus*/
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@ -3629,3 +3629,21 @@ vips_band_format_iscomplex( VipsBandFormat format )
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return( FALSE );
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}
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}
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||||
/* Handy for debugging: view an image in nip2.
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*/
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int
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vips__view_image( VipsImage *image )
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{
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VipsArrayImage *array;
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int result;
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array = vips_array_image_new( &image, 1 );
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result = vips_system( "nip2 %s",
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"in", array,
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"in-format", "%s.v",
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NULL );
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vips_area_unref( VIPS_AREA( array ) );
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return( result );
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||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user