From b5a078a631c6b4a25f65b85de7df611ee47d8289 Mon Sep 17 00:00:00 2001
From: Patrick Childers <patrick.childers@gmail.com>
Date: Fri, 13 Apr 2018 09:11:49 -0400
Subject: [PATCH 1/2] Add Div/Pow matrix functions.

---
 src/Matrix.cc | 31 +++++++++++++++++++++++++++++++
 src/Matrix.h  |  3 +++
 2 files changed, 34 insertions(+)

diff --git a/src/Matrix.cc b/src/Matrix.cc
index 8cd71c3..716ddb7 100755
--- a/src/Matrix.cc
+++ b/src/Matrix.cc
@@ -124,6 +124,8 @@ void Matrix::Init(Local<Object> target) {
   Nan::SetPrototypeMethod(ctor, "subtract", Subtract);
   Nan::SetPrototypeMethod(ctor, "compare", Compare);
   Nan::SetPrototypeMethod(ctor, "mul", Mul);
+  Nan::SetPrototypeMethod(ctor, "div", Div);
+  Nan::SetPrototypeMethod(ctor, "pow", Pow);
 
   target->Set(Nan::New("Matrix").ToLocalChecked(), ctor->GetFunction());
 };
@@ -3154,3 +3156,32 @@ NAN_METHOD(Matrix::Mul) {
   info.GetReturnValue().Set(out);
   return;
 }
+
+NAN_METHOD(Matrix::Div) {
+  SETUP_FUNCTION(Matrix)
+
+  if (info.Length() < 1) {
+    Nan::ThrowTypeError("Invalid number of arguments");
+  }
+
+  Matrix *other = Nan::ObjectWrap::Unwrap<Matrix>(info[0]->ToObject());
+
+  cv::divide(self->mat, other->mat, self->mat);
+
+  return;
+}
+
+NAN_METHOD(Matrix::Pow) {
+  SETUP_FUNCTION(Matrix)
+
+  if (info.Length() < 1) {
+    Nan::ThrowTypeError("Invalid number of arguments");
+  }
+
+  double power = info[0]->NumberValue();
+
+  cv::pow(self->mat, power, self->mat);
+
+  return;
+}
+
diff --git a/src/Matrix.h b/src/Matrix.h
index 336b9fc..61f62a3 100755
--- a/src/Matrix.h
+++ b/src/Matrix.h
@@ -149,6 +149,9 @@ public:
   JSFUNC(Subtract)
   JSFUNC(Compare)
   JSFUNC(Mul)
+  JSFUNC(Div)
+  JSFUNC(Pow)
+
   /*
    static Handle<Value> Val(const Arguments& info);
    static Handle<Value> RowRange(const Arguments& info);

From a9f799004d3ab489e1a1fc8868fab76dced2b414 Mon Sep 17 00:00:00 2001
From: Patrick Childers <patrick.childers@gmail.com>
Date: Fri, 13 Apr 2018 12:42:47 -0400
Subject: [PATCH 2/2] Add CV_BGRA2BGR format conversion.

---
 src/Matrix.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Matrix.cc b/src/Matrix.cc
index 716ddb7..b7884e0 100755
--- a/src/Matrix.cc
+++ b/src/Matrix.cc
@@ -2485,6 +2485,8 @@ NAN_METHOD(Matrix::CvtColor) {
     iTransform = CV_BayerGR2BGR;
   } else if (!strcmp(sTransform, "CV_BGR2RGB")) {
     iTransform = CV_BGR2RGB;
+  } else if (!strcmp(sTransform, "CV_BGRA2BGR")) {
+    iTransform = CV_BGRA2BGR;
   } else {
     iTransform = 0;  // to avoid compiler warning
     Nan::ThrowTypeError("Conversion code is unsupported");