updated docs

docs/docs/imaging.xml

@@ -193,6 +193,7 @@
          <name>Colormaps</name>
          <item>randomly_color_image</item>
          <item>heatmap</item>
+         <item>jet</item>
       </section>
  
       <section>
@@ -682,7 +683,9 @@
          <spec_file link="true">dlib/image_transforms/colormaps_abstract.h</spec_file>
          <description>
             Converts a grayscale image into a heatmap.  This is useful if you want
-            to display a grayscale image with more than 256 values.   
+            to display a grayscale image with more than 256 values.  In particular,
+            this function uses the following color mapping:
+            <br/><img src="heatmap.png"/>
          </description>
          <examples>
             <example>image_ex.cpp.html</example>
@@ -690,6 +693,22 @@
                                  
       </component>
             
+   <!-- ************************************************************************* -->
+      
+      <component>
+         <name>jet</name>
+         <file>dlib/image_transforms.h</file>
+         <spec_file link="true">dlib/image_transforms/colormaps_abstract.h</spec_file>
+         <description>
+            Converts a grayscale image into an image using the jet color
+            scheme.  This is useful if you want to display a grayscale image
+            with more than 256 values.   In particular, this function uses the
+            following color mapping:
+            <br/><img src="jet.png"/>
+         </description>
+                                 
+      </component>
+            
    <!-- ************************************************************************* -->
       
       <component>

docs/docs/term_index.xml

@@ -1111,6 +1111,7 @@
     
 
          <term file="imaging.html" name="heatmap"                    include="dlib/image_transforms.h"/>
+         <term file="imaging.html" name="jet"                        include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="randomly_color_image"       include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="assign_image"               include="dlib/image_transforms.h"/>
          <term file="imaging.html" name="assign_image_scaled"        include="dlib/image_transforms.h"/>