本文整理汇总了C++中Pyramid::ExpandFloat方法的典型用法代码示例。如果您正苦于以下问题：C++ Pyramid::ExpandFloat方法的具体用法？C++ Pyramid::ExpandFloat怎么用？C++ Pyramid::ExpandFloat使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Pyramid的用法示例。
在下文中一共展示了Pyramid::ExpandFloat方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: main
/**
* @function main
*/
int main( int argc, char* argv[] ) {
/// Read image
if( argc < 3 )
{ printf("You moron! I need at least two images \n"); return -1; }
/// Load images as they are
cv::Mat L = cv::imread( argv[1], -1 );
cv::Mat R = cv::imread( argv[2], -1 );
// Have ready my Pyramid and LK object
Pyramid pyr;
LK lk;
// Hierarchical LK
int n = 4; // Max level
int k;
// Get the required pyramid levels
std::vector<cv::Mat> PL(n+1);
std::vector<cv::Mat> PR(n+1);
PL[0] = L.clone();
PR[0] = R.clone();
for( int i = 1; i <= n; i++ ) {
PL[i] = pyr.Reduce( PL[i-1] );
PR[i] = pyr.Reduce( PR[i-1] );
}
/// Let's start the real thing
cv::Mat Lk, Rk;
cv::Mat U, V;
cv::Mat Dx, Dy;
cv::Mat Wk;
cv::Mat Wkg, Rkg, Lkg;
/// 1. Initialize k = n
k = n;
while( k >= 0 ) {
/// 2. Reduce both images to level k
Lk = PL[k];
Rk = PR[k];
/// 3. If k = n initialize U and K to zeros of the size of Lk
if( k == n ) {
U = cv::Mat::zeros( Lk.size(), CV_32FC1 );
V = cv::Mat::zeros( Lk.size(), CV_32FC1 );
}
/// Else expand the flow field and double it
else {
cv::Mat tempU, tempV;
tempU = pyr.ExpandFloat(U);
tempV = pyr.ExpandFloat(V);
U = cv::Mat( tempU.size(), CV_32FC1 );
V = cv::Mat( tempV.size(), CV_32FC1 );
for( int j = 0; j < U.rows; j++ )
{ for( int i = 0; i < U.cols; i++ )
{
U.at<float>(j,i) = ( 2.0*tempU.at<float>(j,i) );
V.at<float>(j,i) = ( 2.0*tempV.at<float>(j,i) );
}
}
}
/// 4. Warp Lk using U and V to form Wk
Wk = lk.Remap2to1( Rk, U, V );
char buf[30];
sprintf( buf, "Wk%d.png", k);
imwrite( buf, Wk );
/// 5. Perform LK on Wk and Rk
cvtColor( Wk, Wkg, CV_BGR2GRAY );
cvtColor( Lk, Lkg, CV_BGR2GRAY );
cvtColor( Rk, Rkg, CV_BGR2GRAY );
//lk.OpticFlowEstimation1( Lkg, Wkg, Dx, Dy, 2.0 );
//lk.OpticFlowEstimation3( Lkg, Wkg, Dx, Dy, 2.0 );
/// 6. Add these to the original flow
for( int j = 0; j < U.rows; j++ )
{ for( int i = 0; i < U.cols; i++ )
{
U.at<float>(j,i) = U.at<float>(j,i) + Dx.at<float>(j,i);
V.at<float>(j,i) = V.at<float>(j,i) + Dy.at<float>(j,i);
}
}
cv::Mat temp = lk.Remap2to1( Rk, U, V );
sprintf( buf, "Wk%dend.png", k);
imwrite( buf, temp );
k = k - 1;
//.........这里部分代码省略.........