本文整理汇总了C++中image::getRow方法的典型用法代码示例。如果您正苦于以下问题：C++ image::getRow方法的具体用法？C++ image::getRow怎么用？C++ image::getRow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image的用法示例。
在下文中一共展示了image::getRow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: apply
// On copy apply for type image!
bool histogramRGBL::apply(const image& src,dvector& dest) const {
if (src.empty()) {
dest.clear();
setStatusString("input channel empty");
return false;
}
const parameters& param = getParameters();
int theMin(0),theMax(255);
const int lastIdx = param.cells-1;
const float m = float(lastIdx)/(theMax-theMin);
int y,r,g,b,l;
int idx;
int entries;
vector<rgbPixel>::const_iterator it,eit;
dest.resize(4*param.cells,0.0,false,true); // initialize with 0
dvector theR(param.cells,0.0);
dvector theG(param.cells,0.0);
dvector theB(param.cells,0.0);
dvector theL(param.cells,0.0);
entries = 0;
// if b too small, it's possible to calculate everything faster...
// check if the ignore value
if (param.considerAllData) {
for (y=0;y<src.rows();++y) {
const vector<rgbPixel>& vct = src.getRow(y);
for (it=vct.begin(),eit=vct.end();it!=eit;++it) {
r = (*it).getRed();
g = (*it).getGreen();
b = (*it).getBlue();
l = (min(r,g,b)+max(r,g,b))/2;
idx = static_cast<int>(r*m);
theR.at(idx)++;
idx = static_cast<int>(g*m);
theG.at(idx)++;
idx = static_cast<int>(b*m);
theB.at(idx)++;
idx = static_cast<int>(l*m);
theL.at(idx)++;
entries++;
}
}
} else {
for (y=0;y<src.rows();++y) {
const vector<rgbPixel>& vct = src.getRow(y);
for (it=vct.begin(),eit=vct.end();it!=eit;++it) {
if ((*it) != param.ignoreValue) {
r = (*it).getRed();
g = (*it).getGreen();
b = (*it).getBlue();
l = (min(r,g,b)+max(r,g,b))/2;
idx = static_cast<int>(r*m);
theR.at(idx)++;
idx = static_cast<int>(g*m);
theG.at(idx)++;
idx = static_cast<int>(b*m);
theB.at(idx)++;
idx = static_cast<int>(l*m);
theL.at(idx)++;
entries++;
}
}
}
}
if (param.smooth) {
convolution convolver;
convolution::parameters cpar;
cpar.boundaryType = lti::Mirror;
cpar.setKernel(param.kernel);
convolver.setParameters(cpar);
matrix<double> tmp;
tmp.useExternData(4,param.cells,&dest.at(0));
convolver.apply(theR,tmp.getRow(0));
convolver.apply(theG,tmp.getRow(1));
convolver.apply(theB,tmp.getRow(2));
convolver.apply(theL,tmp.getRow(3));
} else {
dest.fill(theR,0);
dest.fill(theG,param.cells);
dest.fill(theB,2*param.cells);
dest.fill(theL,3*param.cells);
}
//.........这里部分代码省略.........