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Add support for matrix convertTo function

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This commit is contained in:
Anshul Jain 2015-11-19 21:51:13 -08:00
parent 85749436a6
commit fa008d86a4
2 changed files with 37 additions and 0 deletions
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36
src/Matrix.cc
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@ -51,6 +51,7 @@ void Matrix::Init(Local<Object> target) {
Nan::SetPrototypeMethod(ctor, "getRotationMatrix2D", GetRotationMatrix2D); Nan::SetPrototypeMethod(ctor, "getRotationMatrix2D", GetRotationMatrix2D);
Nan::SetPrototypeMethod(ctor, "warpAffine", WarpAffine); Nan::SetPrototypeMethod(ctor, "warpAffine", WarpAffine);
Nan::SetPrototypeMethod(ctor, "copyTo", CopyTo); Nan::SetPrototypeMethod(ctor, "copyTo", CopyTo);
Nan::SetPrototypeMethod(ctor, "convertTo", ConvertTo);
Nan::SetPrototypeMethod(ctor, "pyrDown", PyrDown); Nan::SetPrototypeMethod(ctor, "pyrDown", PyrDown);
Nan::SetPrototypeMethod(ctor, "pyrUp", PyrUp); Nan::SetPrototypeMethod(ctor, "pyrUp", PyrUp);
Nan::SetPrototypeMethod(ctor, "channels", Channels); Nan::SetPrototypeMethod(ctor, "channels", Channels);
@ -1864,6 +1865,41 @@ NAN_METHOD(Matrix::CopyTo) {
return; return;
} }
/**
* Converts an array to another data type with optional scaling
* Reference: http://docs.opencv.org/2.4/modules/core/doc/basic_structures.html#mat-convertto
*/
NAN_METHOD(Matrix::ConvertTo) {
SETUP_FUNCTION(Matrix)
if (info.Length() < 2) {
JSTHROW("Invalid number of arguments");
}
// param 0 - destination image
Matrix *dest = Nan::ObjectWrap::Unwrap<Matrix>(info[0]->ToObject());
// param 1 - desired matrix type
int rtype = -1;
INT_FROM_ARGS(rtype, 1);
// param 2 - alpha
double alpha = 1;
if (info.Length() >= 3) {
DOUBLE_FROM_ARGS(alpha, 2);
}
// param 3 - beta
double beta = 0;
if (info.Length() >= 4) {
DOUBLE_FROM_ARGS(alpha, 3);
}
self->mat.convertTo(dest->mat, rtype, alpha, beta);
return;
}
// @author SergeMv // @author SergeMv
// Does in-place color transformation // Does in-place color transformation
// img.cvtColor('CV_BGR2YCrCb'); // img.cvtColor('CV_BGR2YCrCb');

1
src/Matrix.h
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@ -98,6 +98,7 @@ public:
JSFUNC(MeanStdDev) JSFUNC(MeanStdDev)
JSFUNC(CopyTo) JSFUNC(CopyTo)
JSFUNC(ConvertTo)
JSFUNC(CvtColor) JSFUNC(CvtColor)
JSFUNC(Split) JSFUNC(Split)
JSFUNC(Merge) JSFUNC(Merge)