imgcmp.c

用C语言实现的JPEG编码

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

/* __START_OF_JASPER_LICENSE__
 * 
 * JasPer Software License
 * 
 * IMAGE POWER JPEG-2000 PUBLIC LICENSE
 * ************************************
 * 
 * GRANT:
 * 
 * Permission is hereby granted, free of charge, to any person (the "User")
 * obtaining a copy of this software and associated documentation, to deal
 * in the JasPer Software without restriction, including without limitation
 * the right to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the JasPer Software (in source and binary forms),
 * and to permit persons to whom the JasPer Software is furnished to do so,
 * provided further that the License Conditions below are met.
 * 
 * License Conditions
 * ******************
 * 
 * A.  Redistributions of source code must retain the above copyright notice,
 * and this list of conditions, and the following disclaimer.
 * 
 * B.  Redistributions in binary form must reproduce the above copyright
 * notice, and this list of conditions, and the following disclaimer in
 * the documentation and/or other materials provided with the distribution.
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 * C.  Neither the name of Image Power, Inc. nor any other contributor
 * (including, but not limited to, the University of British Columbia and
 * Michael David Adams) may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * D.  User agrees that it shall not commence any action against Image Power,
 * Inc., the University of British Columbia, Michael David Adams, or any
 * other contributors (collectively "Licensors") for infringement of any
 * intellectual property rights ("IPR") held by the User in respect of any
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 * F.  This software is for use only in hardware or software products that
 * are compliant with ISO/IEC 15444-1 (i.e., JPEG-2000 Part 1).  No license
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 * THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS LICENSE.
 * NO USE OF THE JASPER SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
 * THIS DISCLAIMER.  THE JASPER SOFTWARE IS PROVIDED BY THE LICENSORS AND
 * CONTRIBUTORS UNDER THIS LICENSE ON AN ``AS-IS'' BASIS, WITHOUT WARRANTY
 * OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, WITHOUT LIMITATION,
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 * WHETHER TORT (INCLUDING NEGLIGENCE), CONTRACT, OR OTHERWISE, SHALL THE
 * INITIAL DEVELOPER, THE UNIVERSITY OF BRITISH COLUMBIA, IMAGE POWER, INC.,
 * MICHAEL DAVID ADAMS, ANY OTHER CONTRIBUTOR, OR ANY DISTRIBUTOR OF THE
 * JASPER SOFTWARE, OR ANY SUPPLIER OF ANY OF SUCH PARTIES, BE LIABLE TO
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 * __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"))) {
		fprintf(stderr, "cannot open %s\n", origpath);
		return EXIT_FAILURE;
	}

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

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