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      1 /*M///////////////////////////////////////////////////////////////////////////////////////
      2 //
      3 //  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
      4 //
      5 //  By downloading, copying, installing or using the software you agree to this license.
      6 //  If you do not agree to this license, do not download, install,
      7 //  copy or use the software.
      8 //
      9 //
     10 //                          License Agreement
     11 //                For Open Source Computer Vision Library
     12 //
     13 // Copyright (C) 2000-2008, Intel Corporation, all rights reserved.
     14 // Copyright (C) 2009, Willow Garage Inc., all rights reserved.
     15 // Third party copyrights are property of their respective owners.
     16 //
     17 // Redistribution and use in source and binary forms, with or without modification,
     18 // are permitted provided that the following conditions are met:
     19 //
     20 //   * Redistribution's of source code must retain the above copyright notice,
     21 //     this list of conditions and the following disclaimer.
     22 //
     23 //   * Redistribution's in binary form must reproduce the above copyright notice,
     24 //     this list of conditions and the following disclaimer in the documentation
     25 //     and/or other materials provided with the distribution.
     26 //
     27 //   * The name of the copyright holders may not be used to endorse or promote products
     28 //     derived from this software without specific prior written permission.
     29 //
     30 // This software is provided by the copyright holders and contributors "as is" and
     31 // any express or implied warranties, including, but not limited to, the implied
     32 // warranties of merchantability and fitness for a particular purpose are disclaimed.
     33 // In no event shall the Intel Corporation or contributors be liable for any direct,
     34 // indirect, incidental, special, exemplary, or consequential damages
     35 // (including, but not limited to, procurement of substitute goods or services;
     36 // loss of use, data, or profits; or business interruption) however caused
     37 // and on any theory of liability, whether in contract, strict liability,
     38 // or tort (including negligence or otherwise) arising in any way out of
     39 // the use of this software, even if advised of the possibility of such damage.
     40 //
     41 //M*/
     42 
     43 #include <iostream>
     44 #include <fstream>
     45 #include "opencv2/imgcodecs.hpp"
     46 #include "opencv2/highgui.hpp"
     47 #include "opencv2/stitching.hpp"
     48 
     49 using namespace std;
     50 using namespace cv;
     51 
     52 bool try_use_gpu = false;
     53 vector<Mat> imgs;
     54 string result_name = "result.jpg";
     55 
     56 void printUsage();
     57 int parseCmdArgs(int argc, char** argv);
     58 
     59 int main(int argc, char* argv[])
     60 {
     61     int retval = parseCmdArgs(argc, argv);
     62     if (retval) return -1;
     63 
     64     Mat pano;
     65     Stitcher stitcher = Stitcher::createDefault(try_use_gpu);
     66     Stitcher::Status status = stitcher.stitch(imgs, pano);
     67 
     68     if (status != Stitcher::OK)
     69     {
     70         cout << "Can't stitch images, error code = " << int(status) << endl;
     71         return -1;
     72     }
     73 
     74     imwrite(result_name, pano);
     75     return 0;
     76 }
     77 
     78 
     79 void printUsage()
     80 {
     81     cout <<
     82         "Rotation model images stitcher.\n\n"
     83         "stitching img1 img2 [...imgN]\n\n"
     84         "Flags:\n"
     85         "  --try_use_gpu (yes|no)\n"
     86         "      Try to use GPU. The default value is 'no'. All default values\n"
     87         "      are for CPU mode.\n"
     88         "  --output <result_img>\n"
     89         "      The default is 'result.jpg'.\n";
     90 }
     91 
     92 
     93 int parseCmdArgs(int argc, char** argv)
     94 {
     95     if (argc == 1)
     96     {
     97         printUsage();
     98         return -1;
     99     }
    100     for (int i = 1; i < argc; ++i)
    101     {
    102         if (string(argv[i]) == "--help" || string(argv[i]) == "/?")
    103         {
    104             printUsage();
    105             return -1;
    106         }
    107         else if (string(argv[i]) == "--try_use_gpu")
    108         {
    109             if (string(argv[i + 1]) == "no")
    110                 try_use_gpu = false;
    111             else if (string(argv[i + 1]) == "yes")
    112                 try_use_gpu = true;
    113             else
    114             {
    115                 cout << "Bad --try_use_gpu flag value\n";
    116                 return -1;
    117             }
    118             i++;
    119         }
    120         else if (string(argv[i]) == "--output")
    121         {
    122             result_name = argv[i + 1];
    123             i++;
    124         }
    125         else
    126         {
    127             Mat img = imread(argv[i]);
    128             if (img.empty())
    129             {
    130                 cout << "Can't read image '" << argv[i] << "'\n";
    131                 return -1;
    132             }
    133             imgs.push_back(img);
    134         }
    135     }
    136     return 0;
    137 }
    138