Doc update

modules/photo/doc/hdr_imaging.rst

@@ -193,16 +193,30 @@ Helper function, that shift Mat filling new regions with zeros.
     
     :param shift: shift value
 
+AlignMTB::computeBitmaps
+---------------------------
+Computes median threshold and exclude bitmaps of given image.
+    
+.. ocv:function:: void computeBitmaps(Mat& img, Mat& tb, Mat& eb)
+
+    :param img: input image
+    
+    :param tb: median threshold bitmap
+    
+    :param eb: exclude bitmap
+	
 createAlignMTB
 ---------------------------
 Creates AlignMTB object
 
-.. ocv:function:: Ptr<AlignMTB> createAlignMTB(int max_bits = 6, int exclude_range = 4)
+.. ocv:function:: Ptr<AlignMTB> createAlignMTB(int max_bits = 6, int exclude_range = 4, bool cut = true)
     
     :param max_bits: logarithm to the base 2 of maximal shift in each dimension. Values of 5 and 6 are usually good enough (31 and 63 pixels shift respectively).
     
     :param exclude_range: range for exclusion bitmap that is constructed to suppress noise around the median value.
 	
+	:param cut: if true cuts images, otherwise fills the new regions with zeros.
+    
 ExposureCalibrate
 ---------------------------
 .. ocv:class:: ExposureCalibrate : public Algorithm
@@ -234,12 +248,14 @@ createCalibrateDebevec
 ---------------------------
 Creates CalibrateDebevec object
 
-.. ocv:function:: Ptr<CalibrateDebevec> createCalibrateDebevec(int samples = 50, float lambda = 10.0f)
+.. ocv:function:: createCalibrateDebevec(int samples = 70, float lambda = 10.0f, bool random = false)
 
     :param samples: number of pixel locations to use
     
     :param lambda: smoothness term weight. Greater values produce smoother results, but can alter the response.
 	
+	:param random: if true sample pixel locations are chosen at random, otherwise the form a rectangular grid.
+    
 ExposureMerge
 ---------------------------
 .. ocv:class:: ExposureMerge : public Algorithm