Mat naiveBlitzToCvMat(blitz::Array<float, 2> a, float multiplier){
int i, j;
Mat b = Mat(a.rows(), a.cols(), CV_32FC1);
for (i=0; i< a.rows(); i++){
for(j=0; j<a.cols(); j++){
b.at<float>(i,j) = a(i, j) * multiplier;
}
}
return b;
}
void mouse( int button, int state, int x, int y)
{
//#define CLICK_SAVE_COLS
#ifdef CLICK_SAVE_COLS
int kw = 16;
int xmin, xmax, ymin, ymax;
xmin = std::max( 1, x - kw);
ymin = std::max( 1, y - kw);
xmax = std::min( x + kw, image.cols() - 1);
ymax = std::min( y + kw, image.rows() - 1);
std::ofstream of( "cluster_dat.hpp");
if( !of)
return;
of << "const int num_pts = " << (xmax - xmin) * (ymax - ymin) * 4 << ";\n";
of << "float dat[num_pts] = {\n";
for( int j=ymin;j<ymax;++j)
{
for( int i=xmin;i<xmax;++i)
{
Imath::Color3f col = image( j, i);
of << col.x << ", " << col.y << ", " << col.z << ", 1.0, \n";
}
}
of << "};\n";
#endif
}
void gl_init( void)
{
glPixelStorei ( GL_UNPACK_ALIGNMENT, 1 );
glClearColor ( 0.0F, 0.0F, 0.0F, 0.0F );
glViewport ( 0, 0, image.cols(), image.rows());
// set coordinate frame for graphics in window
glMatrixMode ( GL_PROJECTION );
glLoadIdentity();
gluOrtho2D ( 0, image.cols(), image.rows(), 0);
glMatrixMode ( GL_MODELVIEW);
glLoadIdentity();
glPixelZoom( 1, -1);
}
inline double Inverse_Matrix_with_lapack_and_Return_Determinant (blitz::Array<double,2> & M, std::string message="")
{
assert (M.rows() ==M.cols());
int n = M.rows();
if (n==0) return 1;
ref<double,2> refM(M,false);//do not check the ordering since inverse and transposition commutes
double * p = refM;
return Inverse_Matrix_with_lapack_and_Return_Determinant(p,n,n,message);
}
void convert2rgb( blitz::Array<Imath::Color3f,2>& img)
{
vigra::BasicImageView<vigra::TinyVector<float,3> > img_view( (vigra::TinyVector<float,3> *) img.dataFirst(), img.cols(), img.rows());
for( int j=0;j<img.rows();++j)
for( int i=0;i<img.cols();++i)
img( j, i) *= lab_scale;
vigra::transformImage( vigra::srcImageRange( img_view), vigra::destImage( img_view), vigra::Lab2RGBFunctor<float>( 1.0f));
}
void display( void)
{
glClear( GL_COLOR_BUFFER_BIT);
glRasterPos2i( 0, 0);
switch( disp)
{
case display_a:
glDrawPixels( image.cols(), image.rows(), GL_LUMINANCE, GL_FLOAT, alpha.dataFirst());
break;
case display_bg:
glDrawPixels( image.cols(), image.rows(), GL_RGB, GL_FLOAT, bg.dataFirst());
break;
case display_fg:
glDrawPixels( image.cols(), image.rows(), GL_RGB, GL_FLOAT, fg.dataFirst());
break;
case display_comp:
glDrawPixels( image.cols(), image.rows(), GL_RGB, GL_FLOAT, comp.dataFirst());
break;
case display_img:
glDrawPixels( image.cols(), image.rows(), GL_RGB, GL_FLOAT, image.dataFirst());
break;
case display_tri:
glDrawPixels( image.cols(), image.rows(), GL_LUMINANCE, GL_UNSIGNED_BYTE, trimap.dataFirst());
break;
}
glutSwapBuffers();
}
int main( int argc, char **argv)
{
std::string inpf, trif, outf, backf;
adobe::dictionary_t params;
bool use_lab = false;
try
{
po::options_description desc("Allowed options");
po::variables_map vm;
po::positional_options_description p;
p.add( "input" , 1);
p.add( "trimap", 1);
desc.add_options() ("help", "produce help message")
// files
("input", po::value<std::string>(), "input file")
("trimap",po::value<std::string>(), "trimap file")
("output,o", po::value<std::string>(), "output file")
("background,bg", po::value<std::string>(), "clean background")
("save_bg", "save estimated background")
// colors
("rgb", "use rgb colorspace")
// sampling
("kwin", po::value<int>()->default_value( 8), "known window radius")
("uwin", po::value<int>()->default_value( 8), "unknown window radius")
("mins", po::value<int>()->default_value( 16), "min samples")
// clusters
("clusters", po::value<int>()->default_value( 5), "max number of clusters")
("ctheresh", po::value<double>()->default_value( 0.001), "cluster thereshold")
// optimize
("cvar", po::value<double>()->default_value( 0.04), "camera variance")
// gui
("window,w", "show results in a window")
; // end
po::store( po::command_line_parser( argc, argv).options( desc).positional( p).run(), vm);
po::notify( vm);
if( vm.count( "help") || !vm.count("input") || !vm.count("trimap"))
usage();
if( (!vm.count("output")) && (!vm.count("window")))
usage();
inpf = vm["input"].as<std::string>();
trif = vm["trimap"].as<std::string>();
if( vm.count("output"))
outf = vm["output"].as<std::string>();
use_lab = !vm.count("rgb");
params[adobe::name_t("use_lab")] = adobe::any_regular_t( use_lab);
// load images
image.reference( read_image( inpf.c_str()));
trimap.reference( read_trimap( trif.c_str()));
if( (trimap.rows() != image.rows()) || (trimap.cols() != image.cols()))
{
std::cout << "Image & trimap dimensions don't match\n";
exit( boost::exit_failure);
}
if( use_lab)
convert2lab( image);
if( vm.count( "background"))
{
backf = vm["background"].as<std::string>();
params[adobe::name_t("use_back")] = adobe::any_regular_t( true);
bg.reference( read_image( backf.c_str()));
if( use_lab)
convert2lab( bg);
}
else
{
bg.resize( image.rows(), image.cols());
params[adobe::name_t("use_back")] = adobe::any_regular_t( false);
}
// sampling
params[ adobe::name_t( "kwin_size")] = adobe::any_regular_t( vm["kwin"].as<int>());
params[ adobe::name_t( "uwin_size")] = adobe::any_regular_t( vm["uwin"].as<int>());
params[ adobe::name_t( "min_samples")] = adobe::any_regular_t( vm["mins"].as<int>());
// cluster
params[ adobe::name_t( "maxk")] = adobe::any_regular_t( vm["clusters"].as<int>());
params[ adobe::name_t( "ctheresh")] = adobe::any_regular_t( vm["ctheresh"].as<double>());
// optimize
params[ adobe::name_t( "cvar")] = adobe::any_regular_t( vm["cvar"].as<double>());
fg.resize( image.rows(), image.cols());
alpha.resize( image.rows(), image.cols());
bmatte bm( image, trimap, fg, bg, alpha, params);
bm();
if( use_lab)
{
convert2rgb( image);
convert2rgb( fg);
convert2rgb( bg);
}
if( vm.count( "output"))
{
save_image( outf.c_str(), fg, &alpha);
if( vm.count( "save_bg"))
{
std::string bgf = "bg_" + outf;
save_image( bgf.c_str(), bg);
}
}
if( vm.count( "window"))
{
comp.resize( image.rows(), image.cols());
for( int j=0;j<image.rows();++j)
{
for( int i=0;i<image.cols();++i)
{
float t = alpha( j, i);
comp( j, i) = (fg( j, i) * t) + ( Imath::Color3f( .5f, .5f, .5f) * (1.0f - t));
}
}
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
glutInitWindowPosition( 50, 50);
glutInitWindowSize( image.cols(), image.rows());
glutCreateWindow( "BMatte");
glutKeyboardFunc( key);
glutMouseFunc( mouse);
glutDisplayFunc( display);
gl_init();
glutMainLoop();
}
}
catch( std::exception& e)
{
std::cerr << "error: " << e.what() << "\n";
return boost::exit_failure;
}
catch( ...) { std::cerr << "Exception of unknown type!\n";}
return boost::exit_success;
}