#include <iostream>
static void help(const char** argv)
{
cout << "\nThis program demonstrates the use of cv::CascadeClassifier class to detect objects (Face + eyes). You can use Haar or LBP features.\n"
"This classifier can recognize many kinds of rigid objects, once the appropriate classifier is trained.\n"
"It's most known use is for faces.\n"
"Usage:\n"
<< argv[0]
<< " [--cascade=<cascade_path> this is the primary trained classifier such as frontal face]\n"
" [--nested-cascade[=nested_cascade_path this an optional secondary classifier such as eyes]]\n"
" [--scale=<image scale greater or equal to 1, try 1.3 for example>]\n"
" [--try-flip]\n"
" [filename|camera_index]\n\n"
"example:\n"
<< argv[0]
<< " --cascade=\"data/haarcascades/haarcascade_frontalface_alt.xml\" --nested-cascade=\"data/haarcascades/haarcascade_eye_tree_eyeglasses.xml\" --scale=1.3\n\n"
"During execution:\n\tHit any key to quit.\n"
"\tUsing OpenCV version " <<
CV_VERSION <<
"\n" << endl;
}
double scale, bool tryflip );
string cascadeName;
string nestedCascadeName;
int main( int argc, const char** argv )
{
string inputName;
bool tryflip;
double scale;
"{help h||}"
"{cascade|data/haarcascades/haarcascade_frontalface_alt.xml|}"
"{nested-cascade|data/haarcascades/haarcascade_eye_tree_eyeglasses.xml|}"
"{scale|1|}{try-flip||}{@filename||}"
);
{
help(argv);
return 0;
}
cascadeName = parser.
get<
string>(
"cascade");
nestedCascadeName = parser.
get<
string>(
"nested-cascade");
scale = parser.
get<
double>(
"scale");
if (scale < 1)
scale = 1;
tryflip = parser.
has(
"try-flip");
inputName = parser.
get<
string>(
"@filename");
{
return 0;
}
cerr << "WARNING: Could not load classifier cascade for nested objects" << endl;
{
cerr << "ERROR: Could not load classifier cascade" << endl;
help(argv);
return -1;
}
if( inputName.empty() || (isdigit(inputName[0]) && inputName.size() == 1) )
{
int camera = inputName.empty() ? 0 : inputName[0] - '0';
if(!capture.
open(camera))
{
cout << "Capture from camera #" << camera << " didn't work" << endl;
return 1;
}
}
else if (!inputName.empty())
{
{
{
cout << "Could not read " << inputName << endl;
return 1;
}
}
}
else
{
{
cout << "Couldn't read lena.jpg" << endl;
return 1;
}
}
{
cout << "Video capturing has been started ..." << endl;
for(;;)
{
capture >> frame;
if( frame.empty() )
break;
detectAndDraw( frame1, cascade, nestedCascade, scale, tryflip );
if( c == 27 || c == 'q' || c == 'Q' )
break;
}
}
else
{
cout << "Detecting face(s) in " << inputName << endl;
{
detectAndDraw( image, cascade, nestedCascade, scale, tryflip );
}
else if( !inputName.empty() )
{
FILE* f = fopen( inputName.c_str(), "rt" );
if( f )
{
char buf[1000+1];
while( fgets( buf, 1000, f ) )
{
int len = (int)strlen(buf);
while( len > 0 && isspace(buf[len-1]) )
len--;
buf[len] = '\0';
cout << "file " << buf << endl;
{
detectAndDraw( image, cascade, nestedCascade, scale, tryflip );
if( c == 27 || c == 'q' || c == 'Q' )
break;
}
else
{
cerr << "Aw snap, couldn't read image " << buf << endl;
}
}
fclose(f);
}
}
}
return 0;
}
double scale, bool tryflip )
{
double t = 0;
vector<Rect> faces, faces2;
const static Scalar colors[] =
{
};
double fx = 1 / scale;
1.1, 2, 0
if( tryflip )
{
flip(smallImg, smallImg, 1);
1.1, 2, 0
for( vector<Rect>::const_iterator r = faces2.begin(); r != faces2.end(); ++r )
{
faces.push_back(
Rect(smallImg.
cols - r->x - r->width, r->y, r->width, r->height));
}
}
for ( size_t i = 0; i < faces.size(); i++ )
{
vector<Rect> nestedObjects;
int radius;
if( 0.75 < aspect_ratio && aspect_ratio < 1.3 )
{
circle( img, center, radius, color, 3, 8, 0 );
}
else
color, 3, 8, 0);
if( nestedCascade.
empty() )
continue;
smallImgROI = smallImg( r );
1.1, 2, 0
for ( size_t j = 0; j < nestedObjects.size(); j++ )
{
Rect nr = nestedObjects[j];
circle( img, center, radius, color, 3, 8, 0 );
}
}
}