Merge branch 'master' of gburri.org:master-thesis

diff --combined Parasitemia/ParasitemiaUI/Utils.fs
index 7a30174,810494e..e7c9784
--- 1/Parasitemia/ParasitemiaUI/Utils.fs
--- 2/Parasitemia/ParasitemiaUI/Utils.fs
+++ b/Parasitemia/ParasitemiaUI/Utils.fs
@@@ -3,6 -3,7 +3,6 @@@
  open System.IO
  
  open Newtonsoft.Json
 -open Newtonsoft.Json.Converters
  
  open Types
  
@@@ -27,6 -28,7 +27,7 @@@ let sensorSizesFilepath = Path.Combine 
  
  let private savePredefinedPPIToFile (predefinedPPI : PredefinedPPI list) =
      try
+         Directory.CreateDirectory roamingDir |> ignore
          use file = new StreamWriter (predefinedPPIFilepath)
          file.Write (JsonConvert.SerializeObject (predefinedPPI, JsonSerializerSettings (Formatting = Formatting.Indented)))
      with
@@@ -35,6 -37,7 +36,7 @@@
  
  let private saveSensorSizesToFile (sensorSizes : SensorSize list) =
      try
+         Directory.CreateDirectory roamingDir |> ignore
          use file = new StreamWriter (sensorSizesFilepath)
          file.Write (JsonConvert.SerializeObject (sensorSizes, JsonSerializerSettings (Formatting = Formatting.Indented)))
      with
@@@ -46,7 -49,7 +48,7 @@@ let predefinedPPI : PredefinedPPI list 
          use file = new StreamReader (predefinedPPIFilepath)
          JsonConvert.DeserializeObject<PredefinedPPI list> (file.ReadToEnd ())
      with
-     | ex ->
+     | _ex ->
          savePredefinedPPIToFile defaultPredefinedPPI
          defaultPredefinedPPI
  
@@@ -55,6 -58,21 +57,21 @@@ let sensorSizes : SensorSize list 
          use file = new StreamReader (sensorSizesFilepath)
          JsonConvert.DeserializeObject<SensorSize list> (file.ReadToEnd ())
      with
-     | ex ->
+     | _ex ->
          saveSensorSizesToFile defaultSensorSizes
          defaultSensorSizes
+ 
+ let argsHelp =
+     let programName = System.AppDomain.CurrentDomain.FriendlyName
+     "Usage of Parasitemia:\n" +
+     "Non-interactive mode:\n" +
+     (sprintf "  %s (--folder <folder>|--file <file>) --output <folder> [--debug]\n" programName) +
+     "    --folder <folder> : an input folder containing images to analyze\n" +
+     "    --file <file> : an image file to be analyzed\n" +
+     "    --output <folder> : a folder to put the results\n" +
+     "    --debug : output more information like intermediate images (it takes more CPU and memory)\n" +
+ 
+     "Interactive mode:\n" +
+     (sprintf "  %s [<document-file>] [--debug]\n" programName) +
+     "    <document-file> : a PIAZ file to automatically open at startup\n" +
+     "    --debug : output information like intermediate images in the current directory (it takes more CPU and memory)"