updated docs

docs/docs/imaging.xml

@@ -136,6 +136,7 @@
 
       <section>
          <name>Filtering</name>
+         <item>gaussian_blur</item> 
          <item>spatially_filter_image</item> 
          <item>spatially_filter_image_separable</item> 
          <item>separable_3x3_filter_block_grayscale</item> 
@@ -908,6 +909,18 @@
                                  
       </component>
             
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>gaussian_blur</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/spatial_filtering_abstract.h</spec_file>
+         <description>        
+            This global function blurs an image by convolving it with a Gaussian filter.
+         </description>
+                                 
+      </component>
+            
    <!-- ************************************************************************* -->
       
       <component>

docs/docs/metaprogramming.xml

@@ -34,6 +34,7 @@
          <item>is_const_type</item>
          <item>is_reference_type</item>
          <item>is_same_type</item>
+         <item>is_float_type</item>
          <item>is_convertible</item>
          <item>is_complex</item>
          <item>is_function</item>
@@ -225,6 +226,19 @@
          
       </component>
       
+   <!-- ************************************************************************* -->
+
+      <component>
+         <name>is_float_type</name>
+         <file>dlib/algs.h</file>
+         <spec_file link="true">dlib/algs.h</spec_file>
+         <description>
+            This is a template where is_float_type&lt;T&gt;::value == true when T is
+            a floating point type (i.e. float, double, or long double) and false otherwise.
+         </description>
+         
+      </component>
+      
    <!-- ************************************************************************* -->
 
       <component>

docs/docs/term_index.xml

@@ -462,6 +462,7 @@
          <term file="metaprogramming.html" name="is_const_type"/>
          <term file="metaprogramming.html" name="is_reference_type"/>
          <term file="metaprogramming.html" name="is_same_type"/>
+         <term file="metaprogramming.html" name="is_float_type"/>
          <term file="metaprogramming.html" name="is_same_object"/>
          <term file="metaprogramming.html" name="is_convertible"/>
          <term file="metaprogramming.html" name="is_complex"/>
@@ -966,6 +967,12 @@
          <term file="imaging.html" name="save_png"/>
          <term file="imaging.html" name="load_image"/>
          <term file="imaging.html" name="save_dng"/>
+         <term file="dlib/image_transforms/spatial_filtering_abstract.h.html" name="create_gaussian_filter"/>
+         <term name="gaussian">
+            <term link="dlib/image_transforms/spatial_filtering_abstract.h.html#gaussian" name="1D Gaussian"/>
+            <term link="dlib/image_keypoint/surf_abstract.h.html#gaussian" name="2D Gaussian"/>
+         </term>
+         <term file="imaging.html" name="gaussian_blur"/>
          <term file="imaging.html" name="spatially_filter_image"/>
          <term file="imaging.html" name="spatially_filter_image_separable"/>
          <term file="imaging.html" name="separable_3x3_filter_block_grayscale"/>