diff options
Diffstat (limited to 'libs/cairo-1.16.0/test/pdiff')
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/Makefile.am | 19 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/Makefile.in | 1120 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/args.c | 119 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/args.h | 46 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/gpl.txt | 340 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/lpyramid.c | 116 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/lpyramid.h | 32 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/pdiff.c | 420 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/pdiff.h | 40 | ||||
| -rw-r--r-- | libs/cairo-1.16.0/test/pdiff/perceptualdiff.c | 101 |
10 files changed, 0 insertions, 2353 deletions
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you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#include "args.h" -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -static const char* copyright = -"PerceptualDiff version 1.0, Copyright (C) 2006 Yangli Hector Yee\n\ -PerceptualDiff comes with ABSOLUTELY NO WARRANTY;\n\ -This is free software, and you are welcome\n\ -to redistribute it under certain conditions;\n\ -See the GPL page for details: http://www.gnu.org/copyleft/gpl.html\n\n"; - -static const char *usage = -"PeceptualDiff image1.tif image2.tif\n\n\ - Compares image1.tif and image2.tif using a perceptually based image metric\n\ - Options:\n\ -\t-verbose : Turns on verbose mode\n\ -\t-fov deg : Field of view in degrees (0.1 to 89.9)\n\ -\t-threshold p : #pixels p below which differences are ignored\n\ -\t-gamma g : Value to convert rgb into linear space (default 2.2)\n\ -\t-luminance l : White luminance (default 100.0 cdm^-2)\n\ -\n\ -\n Note: Input files can also be in the PNG format\ -\n"; - -void -args_init (args_t *args) -{ - args->surface_a = NULL; - args->surface_b = NULL; - args->Verbose = false; - args->FieldOfView = 45.0f; - args->Gamma = 2.2f; - args->ThresholdPixels = 100; - args->Luminance = 100.0f; -} - -void -args_fini (args_t *args) -{ - cairo_surface_destroy (args->surface_a); - cairo_surface_destroy (args->surface_b); -} - -bool -args_parse (args_t *args, int argc, char **argv) -{ - int i; - if (argc < 3) { - fprintf (stderr, "%s", copyright); - fprintf (stderr, "%s", usage); - return false; - } - for (i = 0; i < argc; i++) { - if (i == 1) { - args->surface_a = cairo_image_surface_create_from_png (argv[1]); - if (cairo_surface_status (args->surface_a)) - { - fprintf (stderr, "FAIL: Cannot open %s: %s\n", - argv[1], cairo_status_to_string (cairo_surface_status (args->surface_a))); - return false; - } - } else if (i == 2) { - args->surface_b = cairo_image_surface_create_from_png (argv[2]); - if (cairo_surface_status (args->surface_b)) - { - fprintf (stderr, "FAIL: Cannot open %s: %s\n", - argv[2], cairo_status_to_string (cairo_surface_status (args->surface_b))); - return false; - } - } else { - if (strstr(argv[i], "-fov")) { - if (i + 1 < argc) { - args->FieldOfView = (float) atof(argv[i + 1]); - } - } else if (strstr(argv[i], "-verbose")) { - args->Verbose = true; - } else if (strstr(argv[i], "-threshold")) { - if (i + 1 < argc) { - args->ThresholdPixels = atoi(argv[i + 1]); - } - } else if (strstr(argv[i], "-gamma")) { - if (i + 1 < argc) { - args->Gamma = (float) atof(argv[i + 1]); - } - }else if (strstr(argv[i], "-luminance")) { - if (i + 1 < argc) { - args->Luminance = (float) atof(argv[i + 1]); - } - } - } - } /* i */ - return true; -} - -void -args_print (args_t *args) -{ - printf("Field of view is %f degrees\n", args->FieldOfView); - printf("Threshold pixels is %d pixels\n", args->ThresholdPixels); - printf("The Gamma is %f\n", args->Gamma); - printf("The Display's luminance is %f candela per meter squared\n", args->Luminance); -} diff --git a/libs/cairo-1.16.0/test/pdiff/args.h b/libs/cairo-1.16.0/test/pdiff/args.h deleted file mode 100644 index 5020239..0000000 --- a/libs/cairo-1.16.0/test/pdiff/args.h +++ /dev/null @@ -1,46 +0,0 @@ -/* - Comapre Args - Copyright (C) 2006 Yangli Hector Yee - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#ifndef _ARGS_H -#define _ARGS_H - -#include "pdiff.h" - -/* Args to pass into the comparison function */ -typedef struct _args -{ - cairo_surface_t *surface_a; /* Image A */ - cairo_surface_t *surface_b; /* Image B */ - bool Verbose; /* Print lots of text or not */ - float FieldOfView; /* Field of view in degrees */ - float Gamma; /* The gamma to convert to linear color space */ - float Luminance; /* the display's luminance */ - unsigned int ThresholdPixels; /* How many pixels different to ignore */ -} args_t; - -void -args_init (args_t *args); - -void -args_fini (args_t *args); - -bool -args_parse (args_t *args, int argc, char **argv); - -void -args_print (args_t *args); - -#endif diff --git a/libs/cairo-1.16.0/test/pdiff/gpl.txt b/libs/cairo-1.16.0/test/pdiff/gpl.txt deleted file mode 100644 index f90922e..0000000 --- a/libs/cairo-1.16.0/test/pdiff/gpl.txt +++ /dev/null @@ -1,340 +0,0 @@ - GNU GENERAL PUBLIC LICENSE - Version 2, June 1991 - - Copyright (C) 1989, 1991 Free Software Foundation, Inc. - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. - - Preamble - - The licenses for most software are designed to take away your -freedom to share and change it. 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Of course, the commands you use may -be called something other than `show w' and `show c'; they could even be -mouse-clicks or menu items--whatever suits your program. - -You should also get your employer (if you work as a programmer) or your -school, if any, to sign a "copyright disclaimer" for the program, if -necessary. Here is a sample; alter the names: - - Yoyodyne, Inc., hereby disclaims all copyright interest in the program - `Gnomovision' (which makes passes at compilers) written by James Hacker. - - <signature of Ty Coon>, 1 April 1989 - Ty Coon, President of Vice - -This General Public License does not permit incorporating your program into -proprietary programs. If your program is a subroutine library, you may -consider it more useful to permit linking proprietary applications with the -library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. diff --git a/libs/cairo-1.16.0/test/pdiff/lpyramid.c b/libs/cairo-1.16.0/test/pdiff/lpyramid.c deleted file mode 100644 index bd402c7..0000000 --- a/libs/cairo-1.16.0/test/pdiff/lpyramid.c +++ /dev/null @@ -1,116 +0,0 @@ -/* - Laplacian Pyramid - Copyright (C) 2006 Yangli Hector Yee - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#include "lpyramid.h" -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -struct _lpyramid { - /* Successively blurred versions of the original image */ - float *levels[MAX_PYR_LEVELS]; - - int width; - int height; -}; - -static void -convolve (lpyramid_t *pyramid, float *a, const float *b) -/* convolves image b with the filter kernel and stores it in a */ -{ - int y,x,i,j; - const float Kernel[] = {0.05f, 0.25f, 0.4f, 0.25f, 0.05f}; - int width = pyramid->width; - int height = pyramid->height; - - for (y=0; y<height; y++) { - for (x=0; x<width; x++) { - float sum = 0.f; - for (j=-2; j<=2; j++) { - float sum_i = 0.f; - int ny=y+j; - if (ny<0) ny=-ny; - if (ny>=height) ny=2*height - ny - 1; - ny *= width; - for (i=-2; i<=2; i++) { - int nx=x+i; - if (nx<0) nx=-nx; - if (nx>=width) nx=2*width - nx - 1; - sum_i += Kernel[i+2] * b[ny + nx]; - } - sum += sum_i * Kernel[j+2]; - } - *a++ = sum; - } - } -} - -/* - * Construction/Destruction - */ - -lpyramid_t * -lpyramid_create (float *image, int width, int height) -{ - lpyramid_t *pyramid; - int i; - - pyramid = malloc (sizeof (lpyramid_t)); - if (pyramid == NULL) { - fprintf (stderr, "Out of memory.\n"); - exit (1); - } - pyramid->width = width; - pyramid->height = height; - - /* Make the Laplacian pyramid by successively - * copying the earlier levels and blurring them */ - for (i=0; i<MAX_PYR_LEVELS; i++) { - pyramid->levels[i] = malloc (width * height * sizeof (float)); - if (pyramid->levels[i] == NULL) { - fprintf (stderr, "Out of memory.\n"); - exit (1); - } - if (i == 0) { - memcpy (pyramid->levels[i], image, width * height * sizeof (float)); - } else { - convolve(pyramid, pyramid->levels[i], pyramid->levels[i - 1]); - } - } - - return pyramid; -} - -void -lpyramid_destroy (lpyramid_t *pyramid) -{ - int i; - - for (i=0; i<MAX_PYR_LEVELS; i++) - free (pyramid->levels[i]); - - free (pyramid); -} - -float -lpyramid_get_value (lpyramid_t *pyramid, int x, int y, int level) -{ - int index = x + y * pyramid->width; - int l = level; - if (l > MAX_PYR_LEVELS) - l = MAX_PYR_LEVELS; - return pyramid->levels[l][index]; -} diff --git a/libs/cairo-1.16.0/test/pdiff/lpyramid.h b/libs/cairo-1.16.0/test/pdiff/lpyramid.h deleted file mode 100644 index e47a66e..0000000 --- a/libs/cairo-1.16.0/test/pdiff/lpyramid.h +++ /dev/null @@ -1,32 +0,0 @@ -/* - Laplacian Pyramid - Copyright (C) 2006 Yangli Hector Yee - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ -#ifndef _LPYRAMID_H -#define _LPYRAMID_H - -#define MAX_PYR_LEVELS 8 - -typedef struct _lpyramid lpyramid_t; - -lpyramid_t * -lpyramid_create (float *image, int width, int height); - -void -lpyramid_destroy (lpyramid_t *pyramid); - -float -lpyramid_get_value (lpyramid_t *pyramid, int x, int y, int level); - -#endif /* _LPYRAMID_H */ diff --git a/libs/cairo-1.16.0/test/pdiff/pdiff.c b/libs/cairo-1.16.0/test/pdiff/pdiff.c deleted file mode 100644 index eb5f156..0000000 --- a/libs/cairo-1.16.0/test/pdiff/pdiff.c +++ /dev/null @@ -1,420 +0,0 @@ -/* - Metric - Copyright (C) 2006 Yangli Hector Yee - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#define _GNU_SOURCE - -#if HAVE_CONFIG_H -#include "config.h" -#endif - -#include "lpyramid.h" -#include <math.h> -#include <stdio.h> -#include <stdlib.h> - -#if HAVE_STDINT_H -# include <stdint.h> -#elif HAVE_INTTYPES_H -# include <inttypes.h> -#elif HAVE_SYS_INT_TYPES_H -# include <sys/int_types.h> -#elif defined(_MSC_VER) - typedef __int8 int8_t; - typedef unsigned __int8 uint8_t; - typedef __int16 int16_t; - typedef unsigned __int16 uint16_t; - typedef __int32 int32_t; - typedef unsigned __int32 uint32_t; - typedef __int64 int64_t; - typedef unsigned __int64 uint64_t; -# ifndef HAVE_UINT64_T -# define HAVE_UINT64_T 1 -# endif -# ifndef INT16_MIN -# define INT16_MIN (-32767-1) -# endif -# ifndef INT16_MAX -# define INT16_MAX (32767) -# endif -# ifndef UINT16_MAX -# define UINT16_MAX (65535) -# endif -#else -#error Cannot find definitions for fixed-width integral types (uint8_t, uint32_t, etc.) -#endif - -#include "pdiff.h" - -#ifndef M_PI -#define M_PI 3.14159265f -#endif - -#ifndef __USE_ISOC99 -#define expf exp -#define powf pow -#define fabsf fabs -#define sqrtf sqrt -#define log10f log10 -#endif - -/* - * Given the adaptation luminance, this function returns the - * threshold of visibility in cd per m^2 - * TVI means Threshold vs Intensity function - * This version comes from Ward Larson Siggraph 1997 - */ -static float -tvi (float adaptation_luminance) -{ - /* returns the threshold luminance given the adaptation luminance - units are candelas per meter squared - */ - float log_a, r, result; - log_a = log10f(adaptation_luminance); - - if (log_a < -3.94f) { - r = -2.86f; - } else if (log_a < -1.44f) { - r = powf(0.405f * log_a + 1.6f , 2.18f) - 2.86f; - } else if (log_a < -0.0184f) { - r = log_a - 0.395f; - } else if (log_a < 1.9f) { - r = powf(0.249f * log_a + 0.65f, 2.7f) - 0.72f; - } else { - r = log_a - 1.255f; - } - - result = powf(10.0f , r); - - return result; -} - -/* computes the contrast sensitivity function (Barten SPIE 1989) - * given the cycles per degree (cpd) and luminance (lum) - */ -static float -csf (float cpd, float lum) -{ - float a, b, result; - - a = 440.0f * powf((1.0f + 0.7f / lum), -0.2f); - b = 0.3f * powf((1.0f + 100.0f / lum), 0.15f); - - result = a * cpd * expf(-b * cpd) * sqrtf(1.0f + 0.06f * expf(b * cpd)); - - return result; -} - -/* - * Visual Masking Function - * from Daly 1993 - */ -static float -mask (float contrast) -{ - float a, b, result; - a = powf(392.498f * contrast, 0.7f); - b = powf(0.0153f * a, 4.0f); - result = powf(1.0f + b, 0.25f); - - return result; -} - -/* convert Adobe RGB (1998) with reference white D65 to XYZ */ -static void -AdobeRGBToXYZ (float r, float g, float b, float *x, float *y, float *z) -{ - /* matrix is from http://www.brucelindbloom.com/ */ - *x = r * 0.576700f + g * 0.185556f + b * 0.188212f; - *y = r * 0.297361f + g * 0.627355f + b * 0.0752847f; - *z = r * 0.0270328f + g * 0.0706879f + b * 0.991248f; -} - -static void -XYZToLAB (float x, float y, float z, float *L, float *A, float *B) -{ - static float xw = -1; - static float yw; - static float zw; - const float epsilon = 216.0f / 24389.0f; - const float kappa = 24389.0f / 27.0f; - float f[3]; - float r[3]; - int i; - - /* reference white */ - if (xw < 0) { - AdobeRGBToXYZ(1, 1, 1, &xw, &yw, &zw); - } - r[0] = x / xw; - r[1] = y / yw; - r[2] = z / zw; - for (i = 0; i < 3; i++) { - if (r[i] > epsilon) { - f[i] = powf(r[i], 1.0f / 3.0f); - } else { - f[i] = (kappa * r[i] + 16.0f) / 116.0f; - } - } - *L = 116.0f * f[1] - 16.0f; - *A = 500.0f * (f[0] - f[1]); - *B = 200.0f * (f[1] - f[2]); -} - -static uint32_t -_get_pixel (const uint32_t *data, int i) -{ - return data[i]; -} - -static unsigned char -_get_red (const uint32_t *data, int i) -{ - uint32_t pixel; - uint8_t alpha; - - pixel = _get_pixel (data, i); - alpha = (pixel & 0xff000000) >> 24; - if (alpha == 0) - return 0; - else - return (((pixel & 0x00ff0000) >> 16) * 255 + alpha / 2) / alpha; -} - -static unsigned char -_get_green (const uint32_t *data, int i) -{ - uint32_t pixel; - uint8_t alpha; - - pixel = _get_pixel (data, i); - alpha = (pixel & 0xff000000) >> 24; - if (alpha == 0) - return 0; - else - return (((pixel & 0x0000ff00) >> 8) * 255 + alpha / 2) / alpha; -} - -static unsigned char -_get_blue (const uint32_t *data, int i) -{ - uint32_t pixel; - uint8_t alpha; - - pixel = _get_pixel (data, i); - alpha = (pixel & 0xff000000) >> 24; - if (alpha == 0) - return 0; - else - return (((pixel & 0x000000ff) >> 0) * 255 + alpha / 2) / alpha; -} - -static void * -xmalloc (size_t size) -{ - void *buf; - - buf = malloc (size); - if (buf == NULL) { - fprintf (stderr, "Out of memory.\n"); - exit (1); - } - - return buf; -} - -int -pdiff_compare (cairo_surface_t *surface_a, - cairo_surface_t *surface_b, - double gamma, - double luminance, - double field_of_view) -{ - unsigned int dim = (cairo_image_surface_get_width (surface_a) - * cairo_image_surface_get_height (surface_a)); - unsigned int i; - - /* assuming colorspaces are in Adobe RGB (1998) convert to XYZ */ - float *aX; - float *aY; - float *aZ; - float *bX; - float *bY; - float *bZ; - float *aLum; - float *bLum; - - float *aA; - float *bA; - float *aB; - float *bB; - - unsigned int x, y, w, h; - - lpyramid_t *la, *lb; - - float num_one_degree_pixels, pixels_per_degree, num_pixels; - unsigned int adaptation_level; - - float cpd[MAX_PYR_LEVELS]; - float F_freq[MAX_PYR_LEVELS - 2]; - float csf_max; - const uint32_t *data_a, *data_b; - - unsigned int pixels_failed; - - w = cairo_image_surface_get_width (surface_a); - h = cairo_image_surface_get_height (surface_a); - if (w < 3 || h < 3) /* too small for the Laplacian convolution */ - return -1; - - aX = xmalloc (dim * sizeof (float)); - aY = xmalloc (dim * sizeof (float)); - aZ = xmalloc (dim * sizeof (float)); - bX = xmalloc (dim * sizeof (float)); - bY = xmalloc (dim * sizeof (float)); - bZ = xmalloc (dim * sizeof (float)); - aLum = xmalloc (dim * sizeof (float)); - bLum = xmalloc (dim * sizeof (float)); - - aA = xmalloc (dim * sizeof (float)); - bA = xmalloc (dim * sizeof (float)); - aB = xmalloc (dim * sizeof (float)); - bB = xmalloc (dim * sizeof (float)); - - data_a = (uint32_t *) cairo_image_surface_get_data (surface_a); - data_b = (uint32_t *) cairo_image_surface_get_data (surface_b); - for (y = 0; y < h; y++) { - for (x = 0; x < w; x++) { - float r, g, b, l; - i = x + y * w; - r = powf(_get_red (data_a, i) / 255.0f, gamma); - g = powf(_get_green (data_a, i) / 255.0f, gamma); - b = powf(_get_blue (data_a, i) / 255.0f, gamma); - - AdobeRGBToXYZ(r,g,b,&aX[i],&aY[i],&aZ[i]); - XYZToLAB(aX[i], aY[i], aZ[i], &l, &aA[i], &aB[i]); - r = powf(_get_red (data_b, i) / 255.0f, gamma); - g = powf(_get_green (data_b, i) / 255.0f, gamma); - b = powf(_get_blue (data_b, i) / 255.0f, gamma); - - AdobeRGBToXYZ(r,g,b,&bX[i],&bY[i],&bZ[i]); - XYZToLAB(bX[i], bY[i], bZ[i], &l, &bA[i], &bB[i]); - aLum[i] = aY[i] * luminance; - bLum[i] = bY[i] * luminance; - } - } - - la = lpyramid_create (aLum, w, h); - lb = lpyramid_create (bLum, w, h); - - num_one_degree_pixels = (float) (2 * tan(field_of_view * 0.5 * M_PI / 180) * 180 / M_PI); - pixels_per_degree = w / num_one_degree_pixels; - - num_pixels = 1; - adaptation_level = 0; - for (i = 0; i < MAX_PYR_LEVELS; i++) { - adaptation_level = i; - if (num_pixels > num_one_degree_pixels) break; - num_pixels *= 2; - } - - cpd[0] = 0.5f * pixels_per_degree; - for (i = 1; i < MAX_PYR_LEVELS; i++) cpd[i] = 0.5f * cpd[i - 1]; - csf_max = csf(3.248f, 100.0f); - - for (i = 0; i < MAX_PYR_LEVELS - 2; i++) F_freq[i] = csf_max / csf( cpd[i], 100.0f); - - pixels_failed = 0; - for (y = 0; y < h; y++) { - for (x = 0; x < w; x++) { - int index = x + y * w; - float contrast[MAX_PYR_LEVELS - 2]; - float F_mask[MAX_PYR_LEVELS - 2]; - float factor; - float delta; - float adapt; - bool pass; - float sum_contrast = 0; - for (i = 0; i < MAX_PYR_LEVELS - 2; i++) { - float n1 = fabsf(lpyramid_get_value (la,x,y,i) - lpyramid_get_value (la,x,y,i + 1)); - float n2 = fabsf(lpyramid_get_value (lb,x,y,i) - lpyramid_get_value (lb,x,y,i + 1)); - float numerator = (n1 > n2) ? n1 : n2; - float d1 = fabsf(lpyramid_get_value(la,x,y,i+2)); - float d2 = fabsf(lpyramid_get_value(lb,x,y,i+2)); - float denominator = (d1 > d2) ? d1 : d2; - if (denominator < 1e-5f) denominator = 1e-5f; - contrast[i] = numerator / denominator; - sum_contrast += contrast[i]; - } - if (sum_contrast < 1e-5) sum_contrast = 1e-5f; - adapt = lpyramid_get_value(la,x,y,adaptation_level) + lpyramid_get_value(lb,x,y,adaptation_level); - adapt *= 0.5f; - if (adapt < 1e-5) adapt = 1e-5f; - for (i = 0; i < MAX_PYR_LEVELS - 2; i++) { - F_mask[i] = mask(contrast[i] * csf(cpd[i], adapt)); - } - factor = 0; - for (i = 0; i < MAX_PYR_LEVELS - 2; i++) { - factor += contrast[i] * F_freq[i] * F_mask[i] / sum_contrast; - } - if (factor < 1) factor = 1; - if (factor > 10) factor = 10; - delta = fabsf(lpyramid_get_value(la,x,y,0) - lpyramid_get_value(lb,x,y,0)); - pass = true; - /* pure luminance test */ - if (delta > factor * tvi(adapt)) { - pass = false; - } else { - /* CIE delta E test with modifications */ - float color_scale = 1.0f; - float da = aA[index] - bA[index]; - float db = aB[index] - bB[index]; - float delta_e; - /* ramp down the color test in scotopic regions */ - if (adapt < 10.0f) { - color_scale = 1.0f - (10.0f - color_scale) / 10.0f; - color_scale = color_scale * color_scale; - } - da = da * da; - db = db * db; - delta_e = (da + db) * color_scale; - if (delta_e > factor) { - pass = false; - } - } - if (!pass) - pixels_failed++; - } - } - - free (aX); - free (aY); - free (aZ); - free (bX); - free (bY); - free (bZ); - free (aLum); - free (bLum); - lpyramid_destroy (la); - lpyramid_destroy (lb); - free (aA); - free (bA); - free (aB); - free (bB); - - return pixels_failed; -} diff --git a/libs/cairo-1.16.0/test/pdiff/pdiff.h b/libs/cairo-1.16.0/test/pdiff/pdiff.h deleted file mode 100644 index 30fec06..0000000 --- a/libs/cairo-1.16.0/test/pdiff/pdiff.h +++ /dev/null @@ -1,40 +0,0 @@ -/* - Copyright (C) 2006 Yangli Hector Yee - Copyright (C) 2006 Red Hat, Inc. - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#ifndef _PDIFF_H -#define _PDIFF_H - -#include <cairo.h> - -typedef int bool; -#ifndef true -#define true 1 -#endif -#ifndef false -#define false 0 -#endif - -/* Image comparison metric using Yee's method (and a cairo interface) - * References: A Perceptual Metric for Production Testing, Hector Yee, Journal of Graphics Tools 2004 - */ -int -pdiff_compare (cairo_surface_t *surface_a, - cairo_surface_t *surface_b, - double gamma, - double luminance, - double field_of_view); - -#endif diff --git a/libs/cairo-1.16.0/test/pdiff/perceptualdiff.c b/libs/cairo-1.16.0/test/pdiff/perceptualdiff.c deleted file mode 100644 index 5850dc9..0000000 --- a/libs/cairo-1.16.0/test/pdiff/perceptualdiff.c +++ /dev/null @@ -1,101 +0,0 @@ -/* - PerceptualDiff - a program that compares two images using a perceptual metric - based on the paper : - A perceptual metric for production testing. Journal of graphics tools, 9(4):33-40, 2004, Hector Yee - Copyright (C) 2006 Yangli Hector Yee - - This program is free software; you can redistribute it and/or modify it under the terms of the - GNU General Public License as published by the Free Software Foundation; either version 2 of the License, - or (at your option) any later version. - - This program 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 General Public License for more details. - - You should have received a copy of the GNU General Public License along with this program; - if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA -*/ - -#include <stdio.h> -#include <stdint.h> -#include <string.h> -#include <math.h> -#include "lpyramid.h" -#include "args.h" -#include "pdiff.h" - -static bool Yee_Compare(args_t *args) -{ - unsigned int width_a, height_a, stride_a; - unsigned char *data_a, *row_a; - uint32_t *pixel_a; - unsigned int width_b, height_b, stride_b; - unsigned char *data_b, *row_b; - uint32_t *pixel_b; - unsigned int x, y, pixels_failed; - bool identical = true; - - width_a = cairo_image_surface_get_width (args->surface_a); - height_a = cairo_image_surface_get_height (args->surface_a); - stride_a = cairo_image_surface_get_stride (args->surface_a); - data_a = cairo_image_surface_get_data (args->surface_a); - - width_b = cairo_image_surface_get_width (args->surface_b); - height_b = cairo_image_surface_get_height (args->surface_b); - stride_b = cairo_image_surface_get_stride (args->surface_b); - data_b = cairo_image_surface_get_data (args->surface_b); - - if ((width_a != width_b) || (height_a != height_b)) { - printf ("FAIL: Image dimensions do not match\n"); - return false; - } - - identical = true; - - for (y = 0; y < height_a; y++) { - row_a = data_a + y * stride_a; - row_b = data_b + y * stride_b; - pixel_a = (uint32_t *) row_a; - pixel_b = (uint32_t *) row_b; - for (x = 0; x < width_a; x++) { - if (*pixel_a != *pixel_b) { - identical = false; - } - pixel_a++; - pixel_b++; - } - } - if (identical) { - printf ("PASS: Images are binary identical\n"); - return true; - } - - pixels_failed = pdiff_compare (args->surface_a, args->surface_b, - args->Gamma, args->Luminance, - args->FieldOfView); - - if (pixels_failed < args->ThresholdPixels) { - printf ("PASS: Images are perceptually indistinguishable\n"); - return true; - } - - printf("FAIL: Images are visibly different\n" - "%d pixels are different\n", pixels_failed); - - return false; -} - -int main(int argc, char **argv) -{ - args_t args; - - args_init (&args); - - if (!args_parse (&args, argc, argv)) { - return -1; - } else { - if (args.Verbose) - args_print (&args); - } - return ! Yee_Compare(&args); -} |