updated docs

docs/docs/imaging.xml

@@ -165,6 +165,7 @@
          <item>gaussian_blur</item> 
          <item>spatially_filter_image</item> 
          <item>spatially_filter_image_separable</item> 
+         <item>float_spatially_filter_image_separable</item> 
          <item>separable_3x3_filter_block_grayscale</item> 
          <item>separable_3x3_filter_block_rgb</item> 
          <item>sum_filter</item> 
@@ -1222,6 +1223,20 @@
                                  
       </component>
             
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>float_spatially_filter_image_separable</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.  It is optimized to work only on float valued 
+            images with float valued filters. 
+         </description>
+                                 
+      </component>
+            
    <!-- ************************************************************************* -->
       
       <component>

docs/docs/term_index.xml

@@ -1212,6 +1212,7 @@
          <term file="imaging.html" name="sum_filter_assign"          include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="max_filter"                 include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="spatially_filter_image_separable"       include="dlib/image_transforms.h"/>
+         <term file="imaging.html" name="float_spatially_filter_image_separable"       include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="spatially_filter_image_separable_down"  include="dlib/image_transforms.h"/>
          <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"/>