Mon, 03 Aug 2009 14:21:23 +0100
added keepme for ptdecode obj directory
| philpem@5 | 1 | /* |
| philpem@5 | 2 | # |
| philpem@5 | 3 | # File : fade_images.cpp |
| philpem@5 | 4 | # ( C++ source file ) |
| philpem@5 | 5 | # |
| philpem@5 | 6 | # Description : Compute a linear fading between two images. |
| philpem@5 | 7 | # This file is a part of the CImg Library project. |
| philpem@5 | 8 | # ( http://cimg.sourceforge.net ) |
| philpem@5 | 9 | # |
| philpem@5 | 10 | # Copyright : David Tschumperle |
| philpem@5 | 11 | # ( http://www.greyc.ensicaen.fr/~dtschump/ ) |
| philpem@5 | 12 | # |
| philpem@5 | 13 | # License : CeCILL v2.0 |
| philpem@5 | 14 | # ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html ) |
| philpem@5 | 15 | # |
| philpem@5 | 16 | # This software is governed by the CeCILL license under French law and |
| philpem@5 | 17 | # abiding by the rules of distribution of free software. You can use, |
| philpem@5 | 18 | # modify and/ or redistribute the software under the terms of the CeCILL |
| philpem@5 | 19 | # license as circulated by CEA, CNRS and INRIA at the following URL |
| philpem@5 | 20 | # "http://www.cecill.info". |
| philpem@5 | 21 | # |
| philpem@5 | 22 | # As a counterpart to the access to the source code and rights to copy, |
| philpem@5 | 23 | # modify and redistribute granted by the license, users are provided only |
| philpem@5 | 24 | # with a limited warranty and the software's author, the holder of the |
| philpem@5 | 25 | # economic rights, and the successive licensors have only limited |
| philpem@5 | 26 | # liability. |
| philpem@5 | 27 | # |
| philpem@5 | 28 | # In this respect, the user's attention is drawn to the risks associated |
| philpem@5 | 29 | # with loading, using, modifying and/or developing or reproducing the |
| philpem@5 | 30 | # software by the user in light of its specific status of free software, |
| philpem@5 | 31 | # that may mean that it is complicated to manipulate, and that also |
| philpem@5 | 32 | # therefore means that it is reserved for developers and experienced |
| philpem@5 | 33 | # professionals having in-depth computer knowledge. Users are therefore |
| philpem@5 | 34 | # encouraged to load and test the software's suitability as regards their |
| philpem@5 | 35 | # requirements in conditions enabling the security of their systems and/or |
| philpem@5 | 36 | # data to be ensured and, more generally, to use and operate it in the |
| philpem@5 | 37 | # same conditions as regards security. |
| philpem@5 | 38 | # |
| philpem@5 | 39 | # The fact that you are presently reading this means that you have had |
| philpem@5 | 40 | # knowledge of the CeCILL license and that you accept its terms. |
| philpem@5 | 41 | # |
| philpem@5 | 42 | */ |
| philpem@5 | 43 | |
| philpem@5 | 44 | #include "CImg.h" |
| philpem@5 | 45 | |
| philpem@5 | 46 | // The lines below are necessary when using a non-standard compiler as visualcpp6. |
| philpem@5 | 47 | #ifdef cimg_use_visualcpp6 |
| philpem@5 | 48 | #define std |
| philpem@5 | 49 | #endif |
| philpem@5 | 50 | #ifdef min |
| philpem@5 | 51 | #undef min |
| philpem@5 | 52 | #undef max |
| philpem@5 | 53 | #endif |
| philpem@5 | 54 | |
| philpem@5 | 55 | #ifndef cimg_imagepath |
| philpem@5 | 56 | #define cimg_imagepath "img/" |
| philpem@5 | 57 | #endif |
| philpem@5 | 58 | |
| philpem@5 | 59 | // Main procedure |
| philpem@5 | 60 | //--------------- |
| philpem@5 | 61 | int main(int argc,char **argv) { |
| philpem@5 | 62 | |
| philpem@5 | 63 | // Read and check command line parameters |
| philpem@5 | 64 | cimg_usage("Compute a linear fading between two 2D images"); |
| philpem@5 | 65 | const char *file_i1 = cimg_option("-i1",cimg_imagepath "sh0r.pgm","Input Image 1"); |
| philpem@5 | 66 | const char *file_i2 = cimg_option("-i2",cimg_imagepath "milla.bmp","Input Image 2"); |
| philpem@5 | 67 | const char *file_o = cimg_option("-o",(char*)0,"Output Image"); |
| philpem@5 | 68 | const bool visu = cimg_option("-visu",true,"Visualization mode"); |
| philpem@5 | 69 | const double pmin = cimg_option("-min",40.0,"Begin of the fade (in %)")/100.0; |
| philpem@5 | 70 | const double pmax = cimg_option("-max",60.0,"End of the fade (in %)")/100.0; |
| philpem@5 | 71 | const double angle = cimg_option("-angle",0.0,"Fade angle")*cimg_library::cimg::valuePI/180; |
| philpem@5 | 72 | |
| philpem@5 | 73 | // Init images |
| philpem@5 | 74 | cimg_library::CImg<unsigned char> img1(file_i1), img2(file_i2); |
| philpem@5 | 75 | if (img2.dimx()!=img1.dimx() || img2.dimy()!=img1.dimy() || img2.dimz()!=img1.dimz() || img2.dimv()!=img1.dimv()) { |
| philpem@5 | 76 | int |
| philpem@5 | 77 | dx = cimg_library::cimg::max(img1.dimx(),img2.dimx()), |
| philpem@5 | 78 | dy = cimg_library::cimg::max(img1.dimy(),img2.dimy()), |
| philpem@5 | 79 | dz = cimg_library::cimg::max(img1.dimz(),img2.dimz()), |
| philpem@5 | 80 | dv = cimg_library::cimg::max(img1.dimv(),img2.dimv()); |
| philpem@5 | 81 | img1.resize(dx,dy,dz,dv,3); |
| philpem@5 | 82 | img2.resize(dx,dy,dz,dv,3); |
| philpem@5 | 83 | } |
| philpem@5 | 84 | cimg_library::CImg<unsigned char> dest(img1.dimx(),img1.dimy(),img1.dimz(),img1.dimv()); |
| philpem@5 | 85 | |
| philpem@5 | 86 | // Compute the faded image |
| philpem@5 | 87 | const double ca=std::cos(angle), sa=std::sin(angle); |
| philpem@5 | 88 | double alpha; |
| philpem@5 | 89 | cimg_forXYZV(dest,x,y,z,k) { |
| philpem@5 | 90 | const double X = ((double)x/img1.dimx()-0.5)*ca + ((double)y/img1.dimy()-0.5)*sa; |
| philpem@5 | 91 | if (X+0.5<pmin) alpha=0; else { |
| philpem@5 | 92 | if (X+0.5>pmax) alpha=1; else alpha=(X+0.5-pmin)/(pmax-pmin); |
| philpem@5 | 93 | } |
| philpem@5 | 94 | dest(x,y,z,k) = (unsigned char)((1-alpha)*img1(x,y,z,k) + alpha*img2(x,y,z,k)); |
| philpem@5 | 95 | } |
| philpem@5 | 96 | |
| philpem@5 | 97 | // Save and exit |
| philpem@5 | 98 | if (file_o) dest.save(file_o); |
| philpem@5 | 99 | if (visu) dest.display("Image fading"); |
| philpem@5 | 100 | return 0; |
| philpem@5 | 101 | } |