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/*
* Copyright (C) 2007 - 2008 Valentin Ziegler, ExactCODE GmbH Germany.
*
* 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; version 2. A copy of the GNU General
* Public License can be found in the file LICENSE.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANT-
* ABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* Alternatively, commercial licensing options are available from the
* copyright holder ExactCODE GmbH Germany.
*/
#include <math.h>
#include <iostream>
#include <iomanip>
#include "ArgumentList.hh"
#include "DistanceMatrix.hh"
#include "Codecs.hh"
#include "Colorspace.hh"
#include "Matrix.hh"
#include "optimize2bw.hh"
using namespace Utility;
int main (int argc, char* argv[])
{
ArgumentList arglist;
// setup the argument list
Argument<bool> arg_help ("", "help",
"display this help text and exit");
Argument<std::string> arg_input ("i", "input", "input file",
1, 1);
Argument<std::string> arg_output ("o", "output", "output file",
1, 1);
Argument<int> arg_low ("l", "low",
"low normalization value", 0, 0, 1);
Argument<int> arg_high ("h", "high",
"high normalization value", 0, 0, 1);
Argument<int> arg_threshold ("t", "threshold",
"bi-level threshold value", 0, 0, 1);
Argument<int> arg_radius ("r", "radius",
"\"unsharp mask\" radius", 0, 0, 1);
Argument<double> arg_sd ("sd", "standard-deviation",
"standard deviation for Gaussian distribution", 0.0, 0, 1);
arglist.Add (&arg_help);
arglist.Add (&arg_input);
arglist.Add (&arg_output);
arglist.Add (&arg_low);
arglist.Add (&arg_high);
arglist.Add (&arg_threshold);
arglist.Add (&arg_radius);
arglist.Add (&arg_sd);
// parse the specified argument list - and maybe output the Usage
if (!arglist.Read (argc, argv) || arg_help.Get() == true)
{
std::cerr << "Based on Color / Gray image to Bi-level optimizer"
<< " - Copyright 2005, 2006 by René Rebe" << std::endl
<< "Usage:" << std::endl;
arglist.Usage (std::cerr);
return 1;
}
Image o_image;
if (!ImageCodec::Read (arg_input.Get(), o_image)) {
std::cerr << "Error reading input file." << std::endl;
return 1;
}
Image image=o_image;
int low = 0;
int high = 0;
int sloppy_threshold = 0;
int radius = 3;
double sd = 2.1;
if (arg_low.Get() != 0) {
low = arg_low.Get();
std::cerr << "Low value overwritten: " << low << std::endl;
}
if (arg_high.Get() != 0) {
high = arg_high.Get();
std::cerr << "High value overwritten: " << high << std::endl;
}
if (arg_radius.Get() != 0) {
radius = arg_radius.Get();
std::cerr << "Radius: " << radius << std::endl;
}
if (arg_sd.Get() != 0) {
sd = arg_sd.Get();
std::cerr << "SD overwritten: " << sd << std::endl;
}
// convert to 1-bit (threshold)
int threshold = 0;
if (arg_threshold.Get() != 0) {
threshold = arg_threshold.Get();
std::cerr << "Threshold: " << threshold << std::endl;
}
optimize2bw (image, low, high, threshold, sloppy_threshold, radius, sd);
if (arg_threshold.Get() == 0)
threshold = 200;
//FGMatrix m(image, threshold);
//DistanceMatrix dm(m);
DistanceMatrix dm(image, threshold);
unsigned int line=0;
unsigned int row=0;
Image::iterator i=o_image.begin();
Image::iterator end=o_image.end();
Image::iterator color=o_image.begin();
for (; i!=end ; ++i) {
int value=255-(int)dm(row,line);
uint16_t r = value < 0 ? 0 : value, g = value==255 ? 255 : 0, b = 0;
color.setRGB(r, g, b);
i.set(color);
if (++row == (unsigned int)image.w) {
line++;
row=0;
}
}
if (!ImageCodec::Write(arg_output.Get(), o_image)) {
std::cerr << "Error writing output file." << std::endl;
return 1;
}
return 0;
}
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