updated docs

docs/docs/imaging.xml

@@ -147,6 +147,8 @@
          <item>spatially_filter_image_separable</item> 
          <item>separable_3x3_filter_block_grayscale</item> 
          <item>separable_3x3_filter_block_rgb</item> 
+         <item>sum_filter</item> 
+         <item>spatially_filter_image_separable_down</item> 
       </section>
  
       <section>
@@ -961,6 +963,34 @@
                                  
       </component>
             
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>spatially_filter_image_separable_down</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/spatial_filtering_abstract.h</spec_file>
+         <description>        
+            This global function performs spatial filtering on an image with a user
+            supplied separable filter.  Additionally, it produces a downsampled
+            output.
+         </description>
+                                 
+      </component>
+            
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>sum_filter</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/spatial_filtering_abstract.h</spec_file>
+         <description>        
+            This function slides a rectangle over an input image and outputs a new 
+            image which contains the sum of pixels inside the rectangle at each
+            position in the input image.
+         </description>
+                                 
+      </component>
+            
    <!-- ************************************************************************* -->
       
       <component>

docs/docs/release_notes.xml

@@ -19,6 +19,8 @@ New Stuff:
       - Added some random projection based locality sensitive hashing tools.
       - Added tools to simplify creating scan_image_pyramid objects.  See
         the object_detector_ex.cpp example program for details.
+   - Image Processing
+      - Added sum_filter() and spatially_filter_image_separable_down()
  
 Non-Backwards Compatible Changes:
    - Changed the serialization format for rand objects.
@@ -34,6 +36,8 @@ Non-Backwards Compatible Changes:
         implementation.
       - Removed constness from the operator() member functions of the 
         object_detector.
+   - Fixed improper normalization in the gaussian() functions.  The
+     normalization constant was being computed incorrectly.
 
 Bug fixes:
    - Changed the add_probability() method of joint_probability_table so
@@ -43,11 +47,15 @@ Bug fixes:
      cause some asserts to misfire during debugging mode.
    - The object_detector had code in it which limited the number of outputs
      to 100 rectangles.  This has been removed.
+   - Fixed improper normalization in the gaussian() functions.  The
+     normalization constant was being computed incorrectly.
 
 Other:
    - dlib::rand can now generate Gaussian random numbers.
    - The structural_object_detection_trainer will now automatically setup
      appropriate non-max suppression parameters if the user doesn't supply them. 
+   - The structural_object_detection_trainer has been optimized and now runs
+     significantly faster than in previous dlib releases.
 
 </current>
 

docs/docs/term_index.xml

@@ -1015,7 +1015,9 @@
          </term>
          <term file="imaging.html" name="gaussian_blur"/>
          <term file="imaging.html" name="spatially_filter_image"/>
+         <term file="imaging.html" name="sum_filter"/>
          <term file="imaging.html" name="spatially_filter_image_separable"/>
+         <term file="imaging.html" name="spatially_filter_image_separable_down"/>
          <term file="imaging.html" name="separable_3x3_filter_block_grayscale"/>
          <term file="imaging.html" name="separable_3x3_filter_block_rgb"/>
          <term file="imaging.html" name="pyramid_down"/>