# HG changeset patch
# User Tuomo Valkonen <tuomov@iki.fi>
# Date 1612465111 18000
# Node ID 471f9f64ff2d40a415e99874685adf6b98e8a9e9
# Parent  f8a3bc920f6a7db9c902a7996ed35d1f6f8327d8
Add ColourTools for colourmapped images

diff -r f8a3bc920f6a -r 471f9f64ff2d README.md
--- a/README.md	Thu Feb 04 13:58:19 2021 -0500
+++ b/README.md	Thu Feb 04 13:58:31 2021 -0500
@@ -11,6 +11,7 @@
   * Calculation of discrete image gradients (2D, 3D 3D vector fields)
   * A very simple image filtering code that seems more efficient than the `ImageFiltering`
   package.
+  * Tools to _apply_ colour maps to raw image data, that surprisingly seem to be missing from the standard libraries.
   
 The code is used, for example, by <http://dx.doi.org/10.5281/zenodo.3659180>.
 
diff -r f8a3bc920f6a -r 471f9f64ff2d src/ImageTools.jl
--- a/src/ImageTools.jl	Thu Feb 04 13:58:19 2021 -0500
+++ b/src/ImageTools.jl	Thu Feb 04 13:58:31 2021 -0500
@@ -7,6 +7,7 @@
 include("Gradient.jl")
 include("Translate.jl")
 include("Denoise.jl")
+include("ColourTools.jl")
 include("Visualise.jl")
 include("ImFilter.jl")
 include("TVRecon.jl")
diff -r f8a3bc920f6a -r 471f9f64ff2d src/Visualise.jl
--- a/src/Visualise.jl	Thu Feb 04 13:58:19 2021 -0500
+++ b/src/Visualise.jl	Thu Feb 04 13:58:31 2021 -0500
@@ -7,7 +7,6 @@
 using Printf
 using FileIO
 using Setfield
-using ColorTypes: Gray
 #using Plots
 #using Measures
 import GR
@@ -16,6 +15,7 @@
 using AlgTools.StructTools
 using AlgTools.LinkedLists
 using AlgTools.Comms
+using ..ColourTools
 
 ##############
 # Our exports
@@ -24,8 +24,6 @@
 export LogEntry,
        bg_visualise,
        visualise,
-       clip,
-       grayimg,
        secs_ns,
        iterate_visualise,
        initialise_visualisation,
@@ -57,9 +55,6 @@
     return convert(Float64, time_ns())*1e-9
 end
 
-clip = x -> min(max(x, 0.0), 1.0)
-grayimg = im -> Gray.(clip.(im))
-
 ################
 # Visualisation
 ################