imgcmp.c

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/*
 * Copyright (c) 2001-2003 Michael David Adams.
 * All rights reserved.
 */

/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer License Version 2.0
 * 
 * Copyright (c) 1999-2000 Image Power, Inc.
 * Copyright (c) 1999-2000 The University of British Columbia
 * Copyright (c) 2001-2003 Michael David Adams
 * 
 * All rights reserved.
 * 
 * Permission is hereby granted, free of charge, to any person (the
 * "User") obtaining a copy of this software and associated documentation
 * files (the "Software"), to deal in the Software without restriction,
 * including without limitation the rights to use, copy, modify, merge,
 * publish, distribute, and/or sell copies of the Software, and to permit
 * persons to whom the Software is furnished to do so, subject to the
 * following conditions:
 * 
 * 1.  The above copyright notices and this permission notice (which
 * includes the disclaimer below) shall be included in all copies or
 * substantial portions of the Software.
 * 
 * 2.  The name of a copyright holder shall not be used to endorse or
 * promote products derived from the Software without specific prior
 * written permission.
 * 
 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
 * LICENSE.  NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
 * "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.  IN NO
 * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
 * INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  NO ASSURANCES ARE
 * PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
 * THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
 * EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
 * BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
 * PROPERTY RIGHTS OR OTHERWISE.  AS A CONDITION TO EXERCISING THE RIGHTS
 * GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
 * ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY.  THE SOFTWARE
 * IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
 * SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
 * AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
 * SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
 * THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
 * PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
 * RISK ACTIVITIES").  THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
 * EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
 * 
 * __END_OF_JASPER_LICENSE__
 */

/*
 * Image Comparison Program
 *
 * $Id$
 */

/******************************************************************************\
* Includes.
\******************************************************************************/

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <float.h>
#include <assert.h>

#include <jasper/jasper.h>


/******************************************************************************\
*
\******************************************************************************/

typedef enum {
	OPT_HELP,
	OPT_VERSION,
	OPT_VERBOSE,
	OPT_ORIG,
	OPT_RECON,
	OPT_METRIC,
	OPT_MAXONLY,
	OPT_MINONLY,
	OPT_DIFFIMAGE
} optid_t;

typedef enum {
	metricid_none = 0,
	metricid_equal,
	metricid_psnr,
	metricid_mse,
	metricid_rmse,
	metricid_pae,
	metricid_mae
} metricid_t;

/******************************************************************************\
*
\******************************************************************************/

double getdistortion(jas_matrix_t *orig, jas_matrix_t *recon, int depth, int metric);
double pae(jas_matrix_t *x, jas_matrix_t *y);
double msen(jas_matrix_t *x, jas_matrix_t *y, int n);
double psnr(jas_matrix_t *x, jas_matrix_t *y, int depth);
jas_image_t *makediffimage(jas_matrix_t *origdata, jas_matrix_t *recondata);
void usage(void);
void cmdinfo(void);

/******************************************************************************\
*
\******************************************************************************/

static jas_taginfo_t metrictab[] = {
	{metricid_mse, "mse"},
	{metricid_pae, "pae"},
	{metricid_rmse, "rmse"},
	{metricid_psnr, "psnr"},
	{metricid_mae, "mae"},
	{metricid_equal, "equal"},
	{-1, 0}
};

static jas_opt_t opts[] = {
	{OPT_HELP, "help", 0},
	{OPT_VERSION, "version", 0},
	{OPT_VERBOSE, "verbose", 0},
	{OPT_ORIG, "f", JAS_OPT_HASARG},
	{OPT_RECON, "F", JAS_OPT_HASARG},
	{OPT_METRIC, "m", JAS_OPT_HASARG},
	{OPT_MAXONLY, "max", 0},
	{OPT_MINONLY, "min", 0},
	{OPT_DIFFIMAGE, "d", JAS_OPT_HASARG},
	{-1, 0, 0}
};

static char *cmdname = 0;

/******************************************************************************\
* Main program.
\******************************************************************************/

int main(int argc, char **argv)
{
	char *origpath;
	char *reconpath;
	int verbose;
	char *metricname;
	int metric;

	int id;
	jas_image_t *origimage;
	jas_image_t *reconimage;
	jas_matrix_t *origdata;
	jas_matrix_t *recondata;
	jas_image_t *diffimage;
	jas_stream_t *diffstream;
	int width;
	int height;
	int depth;
	int numcomps;
	double d;
	double maxdist;
	double mindist;
	int compno;
	jas_stream_t *origstream;
	jas_stream_t *reconstream;
	char *diffpath;
	int maxonly;
	int minonly;
	int fmtid;

	verbose = 0;
	origpath = 0;
	reconpath = 0;
	metricname = 0;
	metric = metricid_none;
	diffpath = 0;
	maxonly = 0;
	minonly = 0;

	if (jas_init()) {
		abort();
	}

	cmdname = argv[0];

	/* Parse the command line options. */
	while ((id = jas_getopt(argc, argv, opts)) >= 0) {
		switch (id) {
		case OPT_MAXONLY:
			maxonly = 1;
			break;
		case OPT_MINONLY:
			minonly = 1;
			break;
		case OPT_METRIC:
			metricname = jas_optarg;
			break;
		case OPT_ORIG:
			origpath = jas_optarg;
			break;
		case OPT_RECON:
			reconpath = jas_optarg;
			break;
		case OPT_VERBOSE:
			verbose = 1;
			break;
		case OPT_DIFFIMAGE:
			diffpath = jas_optarg;
			break;
		case OPT_VERSION:
			printf("%s\n", JAS_VERSION);
			exit(EXIT_SUCCESS);
			break;
		case OPT_HELP:
		default:
			usage();
			break;
		}
	}

	if (verbose) {
		cmdinfo();
	}

	/* Ensure that files are given for both the original and reconstructed
	  images. */
	if (!origpath || !reconpath) {
		usage();
	}

	/* If a metric was specified, process it. */
	if (metricname) {
		if ((metric = (jas_taginfo_nonull(jas_taginfos_lookup(metrictab,
		  metricname))->id)) < 0) {
			usage();
		}
	}

	/* Open the original image file. */
	if (!(origstream = jas_stream_fopen(origpath, "rb"))) {
		jas_eprintf("cannot open %s\n", origpath);
		return EXIT_FAILURE;
	}

	/* Open the reconstructed image file. */
	if (!(reconstream = jas_stream_fopen(reconpath, "rb"))) {
		jas_eprintf("cannot open %s\n", reconpath);
		return EXIT_FAILURE;
	}

	/* Decode the original image. */
	if (!(origimage = jas_image_decode(origstream, -1, 0))) {
		jas_eprintf("cannot load original image\n");
		return EXIT_FAILURE;
	}

	/* Decoder the reconstructed image. */
	if (!(reconimage = jas_image_decode(reconstream, -1, 0))) {
		jas_eprintf("cannot load reconstructed image\n");
		return EXIT_FAILURE;
	}

	/* Close the original image file. */
	jas_stream_close(origstream);

	/* Close the reconstructed image file. */
	jas_stream_close(reconstream);

	/* Ensure that both images have the same number of components. */
	numcomps = jas_image_numcmpts(origimage);
	if (jas_image_numcmpts(reconimage) != numcomps) {
		jas_eprintf("number of components differ\n");
		return EXIT_FAILURE;
	}

	/* Compute the difference for each component. */
	maxdist = 0;
	mindist = FLT_MAX;