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https://github.com/peterbraden/node-opencv.git
synced 2025-12-08 19:45:55 +00:00
99 lines
2.5 KiB
C++
99 lines
2.5 KiB
C++
#include "OpenCV.h"
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#if CV_MAJOR_VERSION >= 3
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#ifdef __GNUC__
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#warning TODO: port me to OpenCV 3
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#else
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// vs style message pragma
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#pragma message ( "TODO: port me to OpenCV 3" )
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#endif
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#endif
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#if ((CV_MAJOR_VERSION == 2) && (CV_MINOR_VERSION >=4) && (CV_SUBMINOR_VERSION>=4))
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#include "LDAWrap.h"
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#include "Matrix.h"
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#include <nan.h>
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Nan::Persistent<FunctionTemplate> LDAWrap::constructor;
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void LDAWrap::Init(Local<Object> target) {
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Nan::HandleScope scope;
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// Constructor
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Local<FunctionTemplate> ctor = Nan::New<FunctionTemplate>(LDAWrap::New);
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constructor.Reset(ctor);
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ctor->InstanceTemplate()->SetInternalFieldCount(1);
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ctor->SetClassName(Nan::New("LDA").ToLocalChecked());
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Nan::SetMethod(ctor, "subspaceProject", SubspaceProject);
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Nan::SetMethod(ctor, "subspaceReconstruct", SubspaceReconstruct);
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target->Set(Nan::New("LDA").ToLocalChecked(), ctor->GetFunction());
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};
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NAN_METHOD(LDAWrap::New) {
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Nan::HandleScope scope;
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if (info.This()->InternalFieldCount() == 0) {
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JSTHROW_TYPE("Cannot Instantiate without new")
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}
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LDAWrap *pt = new LDAWrap();
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pt->Wrap(info.This());
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info.GetReturnValue().Set(info.This());
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}
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LDAWrap::LDAWrap() {
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}
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/**
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* http://docs.opencv.org/master/db/d59/classcv_1_1LDA.html#a69c7019a344edc5c55799c16a9fc9ada
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*/
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NAN_METHOD(LDAWrap::SubspaceProject) {
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if (info.Length() != 3) {
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JSTHROW("SubspaceProject function requires 3 arguments")
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}
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// param 0 - eigenvectors
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Matrix *w = Nan::ObjectWrap::Unwrap<Matrix>(info[0]->ToObject());
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// param 1 - mean
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Matrix *mean = Nan::ObjectWrap::Unwrap<Matrix>(info[1]->ToObject());
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// param 2 - src
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Matrix *src = Nan::ObjectWrap::Unwrap<Matrix>(info[2]->ToObject());
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cv::Mat m = cv::subspaceProject(w->mat, mean->mat, src->mat);
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Local<Object> im = Matrix::CreateWrappedFromMat(m);
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info.GetReturnValue().Set(im);
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}
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/**
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* http://docs.opencv.org/master/db/d59/classcv_1_1LDA.html#acbf9949e7567e23af5f71c29fcef76d4
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*/
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NAN_METHOD(LDAWrap::SubspaceReconstruct) {
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if (info.Length() != 3) {
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JSTHROW("SubspaceReconstruct function requires 3 arguments")
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}
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// param 0 - eigenvectors
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Matrix *w = Nan::ObjectWrap::Unwrap<Matrix>(info[0]->ToObject());
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// param 1 - mean
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Matrix *mean = Nan::ObjectWrap::Unwrap<Matrix>(info[1]->ToObject());
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// param 2 - src
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Matrix *src = Nan::ObjectWrap::Unwrap<Matrix>(info[2]->ToObject());
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cv::Mat m = cv::subspaceReconstruct(w->mat, mean->mat, src->mat);
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Local<Object> im = Matrix::CreateWrappedFromMat(m);
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info.GetReturnValue().Set(im);
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}
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#endif // End version > 2.4
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