Some FeatureMountain Docstrings (#1009)

Co-authored-by: Johannes Terblanche <[email protected]>

ext/Images/FeatureMountain.jl

@@ -2,7 +2,11 @@
 
 
 
+"""
+    $SIGNATURES
 
+Add image features to FeatureMountain dict, using an image stored in a blob of a DFG object.
+"""
 function addFeatureTracks_Frame1_Q!(
   # mountain::FeatureMountain,
   featToMany,
@@ -280,7 +284,14 @@ end
 # addFeatureTracks_Frame2_QbckR!(featToMany_, fg, pair)
 
 
+"""
+    $SIGNATURES
+
+Starting from basic short tracks between neighboring images, explore to find longer 
+tracks between many images.
 
+See also: [`summarizeFeatureTracks!`](@ref)
+"""
 function consolidateFeatureTracks!(
   featToMany_::Dict{Tuple{Symbol,Int},MANYTRACKS},
 )
@@ -334,7 +345,14 @@ function consolidateFeatureTracks!(
 end
 
 
+"""
+    $SIGNATURES
 
+Consolidate many short tracks into longer tracks.  A track is the 
+attempt to follow the same real world feature through a sequence of images.
+
+See also: [`consolidateFeatureTracks`](@ref)
+"""
 function summarizeFeatureTracks!(
   featToMany_::Dict{Tuple{Symbol,Int},MANYTRACKS},
 )