pgmread2.cc

torch tracking code, it is a good code

const char *help = "\
progname: pgmread2.cc\n\
code2html: This program reads/writes two pgm images in two different ways.\n\
version: Torch3 vision2.0, 2003-2005\n\
(c) Sebastien Marcel ([e-mail])\n";

#include "ImageGray.h"
#include "DiskXFile.h"
#include "pgmDiskXFile.h"
#include "CmdLine.h"

using namespace Torch;

int main(int argc, char **argv)
{
	char *image_filename1;
	char *image_filename2;
	bool verbose;
  
	// Construct the command line
  	CmdLine cmd;
	cmd.setBOption("write log", false);

  	// Put the help line at the beginning
  	cmd.info(help);

  	cmd.addText("\nArguments:");
  	cmd.addSCmdArg("image filename 1", &image_filename1, "image filename 1");
  	cmd.addSCmdArg("image filename 2", &image_filename2, "image filename 2");
  	cmd.addText("\nOptions:");
  	cmd.addBCmdOption("-verbose", &verbose, false, "verbose");

	cmd.read(argc, argv);

	Image *image = NULL;
  	DiskXFile *image_file = NULL;
  	ImageDiskXFile *pgm_file = NULL;

	//
	// reads image 1 using default format
	image = new ImageGray(image_filename1);
	image->setBOption("verbose", verbose);

	if(verbose)
	{
		print("Image info (%s):\n", image_filename1);
		print("   width  = %d\n", image->width);
		print("   height = %d\n", image->height);
		print("   format = %s (%d)\n", image->coding, image->n_planes);
	}

	//
	// save image 1 using default format
	image_file = new DiskXFile("test1.pgm", "w");
	image->saveXFile(image_file);
	delete image_file;

	//
	// reads image 2 using a specific ImageDiskXFile
	pgm_file = new pgmDiskXFile(image_filename2, "r");
	image->loadImageXFile(pgm_file);
	delete pgm_file;

	if(verbose)
	{
		print("Image info (%s):\n", image_filename2);
		print("   width = %d\n", image->width);
		print("   height = %d\n", image->height);
		print("   format = %s (%d)\n", image->coding, image->n_planes);
	}
	
	pgm_file = new pgmDiskXFile("test2.pgm", "w");
	image->saveImageXFile(pgm_file);
	delete pgm_file;

	delete image;

	return(0);
}