Merge pull request #13928 from catree:add_matx_div_operations

modules/core/include/opencv2/core/matx.hpp

@@ -1279,6 +1279,34 @@ Matx<_Tp, m, n> operator * (double alpha, const Matx<_Tp, m, n>& a)
     return Matx<_Tp, m, n>(a, alpha, Matx_ScaleOp());
 }
 
+template<typename _Tp, int m, int n> static inline
+Matx<_Tp, m, n>& operator /= (Matx<_Tp, m, n>& a, float alpha)
+{
+    for( int i = 0; i < m*n; i++ )
+        a.val[i] = a.val[i] / alpha;
+    return a;
+}
+
+template<typename _Tp, int m, int n> static inline
+Matx<_Tp, m, n>& operator /= (Matx<_Tp, m, n>& a, double alpha)
+{
+    for( int i = 0; i < m*n; i++ )
+        a.val[i] = a.val[i] / alpha;
+    return a;
+}
+
+template<typename _Tp, int m, int n> static inline
+Matx<_Tp, m, n> operator / (const Matx<_Tp, m, n>& a, float alpha)
+{
+    return Matx<_Tp, m, n>(a, 1.f/alpha, Matx_ScaleOp());
+}
+
+template<typename _Tp, int m, int n> static inline
+Matx<_Tp, m, n> operator / (const Matx<_Tp, m, n>& a, double alpha)
+{
+    return Matx<_Tp, m, n>(a, 1./alpha, Matx_ScaleOp());
+}
+
 template<typename _Tp, int m, int n> static inline
 Matx<_Tp, m, n> operator - (const Matx<_Tp, m, n>& a)
 {

modules/core/test/test_operations.cpp

@@ -69,6 +69,8 @@ protected:
     bool TestVec();
     bool TestMatxMultiplication();
     bool TestMatxElementwiseDivison();
+    bool TestDivisionByValue();
+    bool TestInplaceDivisionByValue();
     bool TestMatMatxCastSum();
     bool TestSubMatAccess();
     bool TestExp();
@@ -976,6 +978,50 @@ bool CV_OperationsTest::TestMatxElementwiseDivison()
     return true;
 }
 
+bool CV_OperationsTest::TestDivisionByValue()
+{
+    try
+    {
+        Matx22f mat(2, 4, 6, 8);
+        float alpha = 2.f;
+
+        Matx22f res = mat / alpha;
+
+        if(res(0, 0) != 1.0) throw test_excep();
+        if(res(0, 1) != 2.0) throw test_excep();
+        if(res(1, 0) != 3.0) throw test_excep();
+        if(res(1, 1) != 4.0) throw test_excep();
+    }
+    catch(const test_excep&)
+    {
+        ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
+        return false;
+    }
+    return true;
+}
+
+
+bool CV_OperationsTest::TestInplaceDivisionByValue()
+{
+    try
+    {
+        Matx22f mat(2, 4, 6, 8);
+        float alpha = 2.f;
+
+        mat /= alpha;
+
+        if(mat(0, 0) != 1.0) throw test_excep();
+        if(mat(0, 1) != 2.0) throw test_excep();
+        if(mat(1, 0) != 3.0) throw test_excep();
+        if(mat(1, 1) != 4.0) throw test_excep();
+    }
+    catch(const test_excep&)
+    {
+        ts->set_failed_test_info(cvtest::TS::FAIL_INVALID_OUTPUT);
+        return false;
+    }
+    return true;
+}
 
 bool CV_OperationsTest::TestVec()
 {
@@ -1204,6 +1250,12 @@ void CV_OperationsTest::run( int /* start_from */)
     if (!TestMatxElementwiseDivison())
         return;
 
+    if (!TestDivisionByValue())
+        return;
+
+    if (!TestInplaceDivisionByValue())
+        return;
+
     if (!TestMatMatxCastSum())
         return;