From 3a4e06e2899444605454122aa4d297823c603a2e Mon Sep 17 00:00:00 2001
From: Vadim Pisarevsky <no@email>
Date: Tue, 31 May 2011 15:43:11 +0000
Subject: [PATCH] resolved ticket #1104 (processing of transposed numpy arrays)

---
 modules/python/src2/cv2.cpp | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/modules/python/src2/cv2.cpp b/modules/python/src2/cv2.cpp
index 07fa7f60a..511a3f0a8 100644
--- a/modules/python/src2/cv2.cpp
+++ b/modules/python/src2/cv2.cpp
@@ -179,6 +179,7 @@ static int pyopencv_to(const PyObject* o, Mat& m, const char* name = "<unknown>"
     size_t step[CV_MAX_DIM+1], elemsize = CV_ELEM_SIZE1(type);
     const npy_intp* _sizes = PyArray_DIMS(o);
     const npy_intp* _strides = PyArray_STRIDES(o);
+    bool transposed = false;
     
     for(int i = 0; i < ndims; i++)
     {
@@ -192,6 +193,13 @@ static int pyopencv_to(const PyObject* o, Mat& m, const char* name = "<unknown>"
         ndims++;
     }
     
+    if( ndims >= 2 && step[0] < step[1] )
+    {
+        std::swap(size[0], size[1]);
+        std::swap(step[0], step[1]);
+        transposed = true;
+    }
+    
     if( ndims == 3 && size[2] <= CV_CN_MAX && step[1] == elemsize*size[2] )
     {
         ndims--;
@@ -213,6 +221,14 @@ static int pyopencv_to(const PyObject* o, Mat& m, const char* name = "<unknown>"
                     // (since Mat destructor will decrement the reference counter)
     };
     m.allocator = &g_numpyAllocator;
+    
+    if( transposed )
+    {
+        Mat tmp;
+        tmp.allocator = &g_numpyAllocator;
+        transpose(m, tmp);
+        m = tmp;
+    }
     return true;
 }