| /* |
| # |
| # File : captcha.cpp |
| # ( C++ source file ) |
| # |
| # Description : Captcha images generator. |
| # This file is a part of the CImg Library project. |
| # ( http://cimg.eu ) |
| # |
| # Copyright : David Tschumperle |
| # ( http://tschumperle.users.greyc.fr/ ) |
| # |
| # License : CeCILL v2.0 |
| # ( http://www.cecill.info/licences/Licence_CeCILL_V2-en.html ) |
| # |
| # This software is governed by the CeCILL license under French law and |
| # abiding by the rules of distribution of free software. You can use, |
| # modify and/ or redistribute the software under the terms of the CeCILL |
| # license as circulated by CEA, CNRS and INRIA at the following URL |
| # "http://www.cecill.info". |
| # |
| # As a counterpart to the access to the source code and rights to copy, |
| # modify and redistribute granted by the license, users are provided only |
| # with a limited warranty and the software's author, the holder of the |
| # economic rights, and the successive licensors have only limited |
| # liability. |
| # |
| # In this respect, the user's attention is drawn to the risks associated |
| # with loading, using, modifying and/or developing or reproducing the |
| # software by the user in light of its specific status of free software, |
| # that may mean that it is complicated to manipulate, and that also |
| # therefore means that it is reserved for developers and experienced |
| # professionals having in-depth computer knowledge. Users are therefore |
| # encouraged to load and test the software's suitability as regards their |
| # requirements in conditions enabling the security of their systems and/or |
| # data to be ensured and, more generally, to use and operate it in the |
| # same conditions as regards security. |
| # |
| # The fact that you are presently reading this means that you have had |
| # knowledge of the CeCILL license and that you accept its terms. |
| # |
| */ |
| |
| #ifndef cimg_debug |
| #define cimg_debug 1 |
| #endif |
| #include "CImg.h" |
| using namespace cimg_library; |
| #undef min |
| #undef max |
| |
| // Main procedure |
| //---------------- |
| int main(int argc,char **argv) { |
| |
| // Read command line parameters |
| //------------------------------ |
| cimg_usage("Simple captcha generator."); |
| const char *file_o = cimg_option("-o",(const char*)0,"Output image file"); |
| const bool add_border = cimg_option("-b",true,"Add border to captcha image"); |
| const bool visu = cimg_option("-visu",true,"Enable visualization if no output file"); |
| |
| // Generate captcha text (6 char max). |
| //------------------------------------ |
| const char *predef_words[] = { |
| "aarrgh", "abacas", "abacus", "abakas", "abamps", "abased", "abaser", "abases", "abasia", "abated", "abater", |
| "abates", "abatis", "abator", "baobab", "barbal", "barbed", "barbel", "barber", "barbes", "barbet", "barbie", |
| "barbut", "barcas", "barded", "bardes", "bardic", "barege", "cavies", "cavils", "caving", "cavity", "cavort", |
| "cawing", "cayman", "cayuse", "ceased", "ceases", "cebids", "ceboid", "cecity", "cedarn", "dicast", "dicers", |
| "dicier", "dicing", "dicker", "dickey", "dickie", "dicots", "dictum", "didact", "diddle", "diddly", "didies", |
| "didoes", "emails", "embalm", "embank", "embark", "embars", "embays", "embeds", "embers", "emblem", "embody", |
| "emboli", "emboly", "embosk", "emboss", "fluffy", "fluids", "fluish", "fluked", "flukes", "flukey", "flumed", |
| "flumes", "flumps", "flunks", "flunky", "fluors", "flurry", "fluted", "genome", "genoms", "genres", "genros", |
| "gentes", "gentil", "gentle", "gently", "gentry", "geodes", "geodic", "geoids", "gerahs", "gerbil", "hotter", |
| "hottie", "houdah", "hounds", "houris", "hourly", "housed", "housel", "houser", "houses", "hovels", "hovers", |
| "howdah", "howdie", "inland", "inlays", "inlets", "inlier", "inmate", "inmesh", "inmost", "innage", "innate", |
| "inners", "inning", "inpour", "inputs", "inroad", "joypop", "jubbah", "jubhah", "jubile", "judder", "judged", |
| "judger", "judges", "judoka", "jugate", "jugful", "jugged", "juggle", "jugula", "knifer", "knifes", "knight", |
| "knives", "knobby", "knocks", "knolls", "knolly", "knosps", "knotty", "knouts", "knower", "knowns", "knubby", |
| "legate", "legato", "legend", "legers", "legged", "leggin", "legion", "legist", "legits", "legman", "legmen", |
| "legong", "legume", "lehuas", "mammal", "mammas", "mammee", "mammer", "mammet", "mammey", "mammie", "mammon", |
| "mamzer", "manage", "manana", "manats", "manche", "manege", "nihils", "nilgai", "nilgau", "nilled", "nimble", |
| "nimbly", "nimbus", "nimmed", "nimrod", "ninety", "ninjas", "ninons", "ninths", "niobic", "offish", "offkey", |
| "offset", "oftest", "ogdoad", "oghams", "ogival", "ogives", "oglers", "ogling", "ogress", "ogrish", "ogrism", |
| "ohmage", "papaws", "papaya", "papers", "papery", "pappus", "papula", "papule", "papyri", "parade", "paramo", |
| "parang", "paraph", "parcel", "pardah", "quasar", "quatre", "quaver", "qubits", "qubyte", "queans", "queasy", |
| "queazy", "queens", "queers", "quelea", "quells", "quench", "querns", "raised", "raiser", "raises", "raisin", |
| "raitas", "rajahs", "rakees", "rakers", "raking", "rakish", "rallye", "ralphs", "ramada", "ramate", "savory", |
| "savour", "savoys", "sawers", "sawfly", "sawing", "sawlog", "sawney", "sawyer", "saxony", "sayeds", "sayers", |
| "sayest", "sayids", "tondos", "toneme", "toners", "tongas", "tonged", "tonger", "tongue", "tonics", "tonier", |
| "toning", "tonish", "tonlet", "tonner", "tonnes", "uredia", "uredos", "ureide", "uremia", "uremic", "ureter", |
| "uretic", "urgent", "urgers", "urging", "urials", "urinal", "urines", "uropod", "villus", "vimina", "vinals", |
| "vincas", "vineal", "vinery", "vinier", "vinify", "vining", "vinous", "vinyls", "violas", "violet", "violin", |
| "webfed", "weblog", "wechts", "wedded", "wedder", "wedeln", "wedels", "wedged", "wedges", "wedgie", "weeded", |
| "weeder", "weekly", "weened", "xystoi", "xystos", "xystus", "yabber", "yabbie", "yachts", "yacked", "yaffed", |
| "yagers", "yahoos", "yairds", "yakked", "yakker", "yakuza", "zigged", "zigzag", "zillah", "zinced", "zincic", |
| "zincky", "zinebs", "zinged", "zinger", "zinnia", "zipped", "zipper", "zirams", "zircon" }; |
| cimg::srand(); |
| const char *const captcha_text = predef_words[std::rand()%(sizeof(predef_words)/sizeof(char*))]; |
| |
| // Create captcha image |
| //---------------------- |
| |
| // Write colored and distorted text |
| CImg<unsigned char> captcha(256,64,1,3,0), color(3); |
| char letter[2] = { 0 }; |
| for (unsigned int k = 0; k<6; ++k) { |
| CImg<unsigned char> tmp; |
| *letter = captcha_text[k]; |
| if (*letter) { |
| cimg_forX(color,i) color[i] = (unsigned char)(128 + (std::rand()%127)); |
| tmp.draw_text((int)(2 + 8*cimg::rand()), |
| (int)(12*cimg::rand()), |
| letter,color.data(),0,1,std::rand()%2?38:57).resize(-100,-100,1,3); |
| const unsigned int dir = std::rand()%4, wph = tmp.width() + tmp.height(); |
| cimg_forXYC(tmp,x,y,v) { |
| const int val = dir==0?x + y:(dir==1?x + tmp.height() - y:(dir==2?y + tmp.width() - x: |
| tmp.width() - x + tmp.height() - y)); |
| tmp(x,y,v) = (unsigned char)std::max(0.0f,std::min(255.0f,1.5f*tmp(x,y,v)*val/wph)); |
| } |
| if (std::rand()%2) tmp = (tmp.get_dilate(3)-=tmp); |
| tmp.blur((float)cimg::rand()*0.8f).normalize(0,255); |
| const float sin_offset = (float)cimg::rand(-1,1)*3, sin_freq = (float)cimg::rand(-1,1)/7; |
| cimg_forYC(captcha,y,v) captcha.get_shared_row(y,0,v).shift((int)(4*std::cos(y*sin_freq + sin_offset))); |
| captcha.draw_image(6 + 40*k,tmp); |
| } |
| } |
| |
| // Add geometric and random noise |
| CImg<unsigned char> copy = (+captcha).fill(0); |
| for (unsigned int l = 0; l<3; ++l) { |
| if (l) copy.blur(0.5f).normalize(0,148); |
| for (unsigned int k = 0; k<10; ++k) { |
| cimg_forX(color,i) color[i] = (unsigned char)(128 + cimg::rand()*127); |
| if (cimg::rand()<0.5f) copy.draw_circle((int)(cimg::rand()*captcha.width()), |
| (int)(cimg::rand()*captcha.height()), |
| (int)(cimg::rand()*30), |
| color.data(),0.6f,~0U); |
| else copy.draw_line((int)(cimg::rand()*captcha.width()), |
| (int)(cimg::rand()*captcha.height()), |
| (int)(cimg::rand()*captcha.width()), |
| (int)(cimg::rand()*captcha.height()), |
| color.data(),0.6f); |
| } |
| } |
| captcha|=copy; |
| captcha.noise(10,2); |
| |
| if (add_border) |
| captcha.draw_rectangle(0,0,captcha.width() - 1,captcha.height() - 1, |
| CImg<unsigned char>::vector(255,255,255).data(),1.0f,~0U); |
| captcha = (+captcha).fill(255) - captcha; |
| |
| // Write output image and captcha text |
| //------------------------------------- |
| std::printf("%s\n",captcha_text); |
| if (file_o) captcha.save(file_o); |
| else if (visu) { |
| CImgDisplay disp(CImg<unsigned char>(512,128,1,3,180).draw_image(128,32,captcha),captcha_text,0); |
| while (!disp.is_closed() && !disp.key()) { disp.wait(); if (disp.is_resized()) disp.resize(disp).wait(100); } |
| } |
| return 0; |
| } |