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Added matchTemplate and minMaxLoc

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This commit is contained in:
Yu Jiang Tham 2014-02-28 23:14:55 -08:00
parent e3b20082ab
commit 7ec393ac09
2 changed files with 82 additions and 0 deletions
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79
src/Matrix.cc
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@ -92,6 +92,9 @@ Matrix::Init(Handle<Object> target) {
NODE_SET_PROTOTYPE_METHOD(constructor, "floodFill", FloodFill);
NODE_SET_PROTOTYPE_METHOD(constructor, "matchTemplate", MatchTemplate);
NODE_SET_PROTOTYPE_METHOD(constructor, "minMaxLoc", MinMaxLoc);
NODE_SET_METHOD(constructor, "Eye", Eye);
@ -1530,3 +1533,79 @@ Matrix::FloodFill(const Arguments& args){
}
// @author ytham
// Match Template filter
// Usage: output = input.matchTemplate("templateFileString", method);
Handle<Value>
Matrix::MatchTemplate(const v8::Arguments& args) {
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
v8::String::Utf8Value args0(args[0]->ToString());
std::string filename = std::string(*args0);
cv::Mat templ;
templ = cv::imread(filename, CV_8S);
Local<Object> out = Matrix::constructor->GetFunction()->NewInstance();
Matrix *m_out = ObjectWrap::Unwrap<Matrix>(out);
int cols = self->mat.cols - templ.cols + 1;
int rows = self->mat.rows - templ.rows + 1;
m_out->mat.create(cols, rows, CV_32FC1);
/*
TM_SQDIFF =0
TM_SQDIFF_NORMED =1
TM_CCORR =2
TM_CCORR_NORMED =3
TM_CCOEFF =4
TM_CCOEFF_NORMED =5
*/
int method = (args.Length() < 2) ? (int)cv::TM_CCORR_NORMED : args[1]->Uint32Value();
cv::matchTemplate(self->mat, templ, m_out->mat, method);
double minVal; double maxVal; cv::Point minLoc; cv::Point maxLoc;
cv::minMaxLoc(m_out->mat, &minVal, &maxVal, &minLoc, &maxLoc, cv::Mat() );
return scope.Close(out);
}
// @author ytham
// Min/Max location
Handle<Value>
Matrix::MinMaxLoc(const v8::Arguments& args) {
HandleScope scope;
Matrix *self = ObjectWrap::Unwrap<Matrix>(args.This());
double minVal; double maxVal; cv::Point minLoc; cv::Point maxLoc;
cv::minMaxLoc(self->mat, &minVal, &maxVal, &minLoc, &maxLoc, cv::Mat() );
Local<Value> v_minVal = v8::Number::New(minVal);
Local<Value> v_maxVal = v8::Number::New(maxVal);
Local<Value> v_minLoc_x = v8::Number::New(minLoc.x);
Local<Value> v_minLoc_y = v8::Number::New(minLoc.y);
Local<Value> v_maxLoc_x = v8::Number::New(maxLoc.x);
Local<Value> v_maxLoc_y = v8::Number::New(maxLoc.y);
Local<Object> o_minLoc = Object::New();
o_minLoc->Set(String::NewSymbol("x"), v_minLoc_x);
o_minLoc->Set(String::NewSymbol("y"), v_minLoc_y);
Local<Object> o_maxLoc = Object::New();
o_maxLoc->Set(String::NewSymbol("x"), v_maxLoc_x);
o_maxLoc->Set(String::NewSymbol("y"), v_maxLoc_y);
// Output result object
Local<Object> result = Object::New();
result->Set(String::NewSymbol("minVal"), v_minVal);
result->Set(String::NewSymbol("maxVal"), v_maxVal);
result->Set(String::NewSymbol("minLoc"), o_minLoc);
result->Set(String::NewSymbol("maxLoc"), o_maxLoc);=
return scope.Close(result);
}

3
src/Matrix.h
View File

@ -84,6 +84,9 @@ class Matrix: public node::ObjectWrap {
JSFUNC(EqualizeHist)
JSFUNC(Pixel)
JSFUNC(FloodFill)
JSFUNC(MatchTemplate)
JSFUNC(MinMaxLoc)
/*
static Handle<Value> Val(const Arguments& args);
static Handle<Value> RowRange(const Arguments& args);