void NIUserMaskApp::update()
{
if ( mNI.checkNewVideoFrame() )
{
Surface8u maskSurface = mNIUserTracker.getUserMask();
cv::Mat cvMask, cvMaskFiltered;
cvMask = toOcv( Channel8u( maskSurface ) );
cv::blur( cvMask, cvMaskFiltered, cv::Size( mBlurAmt, mBlurAmt ) );
cv::Mat dilateElm = cv::getStructuringElement( cv::MORPH_RECT,
cv::Size( mDilateAmt, mDilateAmt ) );
cv::Mat erodeElm = cv::getStructuringElement( cv::MORPH_RECT,
cv::Size( mErodeAmt, mErodeAmt ) );
cv::erode( cvMaskFiltered, cvMaskFiltered, erodeElm, cv::Point( -1, -1 ), 1 );
cv::dilate( cvMaskFiltered, cvMaskFiltered, dilateElm, cv::Point( -1, -1 ), 3 );
cv::erode( cvMaskFiltered, cvMaskFiltered, erodeElm, cv::Point( -1, -1 ), 1 );
cv::blur( cvMaskFiltered, cvMaskFiltered, cv::Size( mBlurAmt, mBlurAmt ) );
cv::threshold( cvMaskFiltered, cvMaskFiltered, mThres, 255, CV_THRESH_BINARY);
vector< vector< cv::Point > > contours;
cv::findContours( cvMaskFiltered, contours, CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE );
mShape.clear();
for ( vector< vector< cv::Point > >::const_iterator it = contours.begin();
it != contours.end(); ++it )
{
vector< cv::Point >::const_iterator pit = it->begin();
if ( it->empty() )
continue;
mShape.moveTo( fromOcv( *pit ) );
++pit;
for ( ; pit != it->end(); ++pit )
{
mShape.lineTo( fromOcv( *pit ) );
}
mShape.close();
}
}
}
