From eca114ae95d8e87de9c24dfcefbd190bbc7f8e68 Mon Sep 17 00:00:00 2001
From: Fabrice Silva <silva@lma.cnrs-mrs.fr>
Date: Tue, 26 Feb 2013 18:50:20 +0100
Subject: [PATCH] Fix definition of the covariance matrix of derivatives.

---
 modules/imgproc/doc/feature_detection.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/imgproc/doc/feature_detection.rst b/modules/imgproc/doc/feature_detection.rst
index df1a19307..c705842f2 100644
--- a/modules/imgproc/doc/feature_detection.rst
+++ b/modules/imgproc/doc/feature_detection.rst
@@ -62,7 +62,7 @@ For every pixel
 
 .. math::
 
-    M =  \begin{bmatrix} \sum _{S(p)}(dI/dx)^2 &  \sum _{S(p)}(dI/dx dI/dy)^2  \\ \sum _{S(p)}(dI/dx dI/dy)^2 &  \sum _{S(p)}(dI/dy)^2 \end{bmatrix}
+    M =  \begin{bmatrix} \sum _{S(p)}(dI/dx)^2 &  \sum _{S(p)}dI/dx dI/dy  \\ \sum _{S(p)}dI/dx dI/dy &  \sum _{S(p)}(dI/dy)^2 \end{bmatrix}
 
 where the derivatives are computed using the
 :ocv:func:`Sobel` operator.