updated docs

docs/docs/imaging.xml

@@ -176,6 +176,7 @@
          <name>Scaling and Rotating</name>
          <item>pyramid_up</item> 
          <item>pyramid_down</item> 
+         <item>pyramid_down_generic</item> 
          <item>pyramid_down_3_2</item> 
          <item>pyramid_down_4_3</item> 
          <item>pyramid_down_5_4</item> 
@@ -1318,6 +1319,20 @@
                                  
       </component>
             
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>pyramid_down_generic</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/image_pyramid_abstract.h</spec_file>
+         <description>        
+               This is a simple function object to help create image pyramids.  It 
+               downsamples an image by a ratio of N to N-1 where N is supplied by the
+               user.
+         </description>
+                                 
+      </component>
+            
    <!-- ************************************************************************* -->
       
       <component>

docs/docs/term_index.xml

@@ -1216,6 +1216,7 @@
          <term file="imaging.html" name="separable_3x3_filter_block_grayscale"   include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="separable_3x3_filter_block_rgb"         include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="pyramid_down"               include="dlib/image_transforms.h"/>
+         <term file="imaging.html" name="pyramid_down_generic"       include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="pyramid_disable"            include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="pyramid_down_3_2"           include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="pyramid_down_4_3"           include="dlib/image_transforms.h"/>