diff --git a/design/dem-loading-class-diagram.puml b/design/dem-loading-class-diagram.puml
index 3e0001c5620452d5505e4f8463c1557784332abb..abfecd1e81501c32b9e790a49cd041c3935846a6 100644
--- a/design/dem-loading-class-diagram.puml
+++ b/design/dem-loading-class-diagram.puml
@@ -29,7 +29,7 @@
 
     package api #DDEBD8
       interface UpdatableTile {
-        +setGeometry(φref, λref, δφ, δλ, rows, columns)
+        +setGeometry(φ₀, λ₀, δφ, δλ, rows, columns)
         +setElevation(i, j, h)
       }
       interface TileUpdater {
@@ -38,7 +38,7 @@
       UpdatableTile <-- TileUpdater : updates
     end package
 
-    package dem #DDEBD8
+    package raster #DDEBD8
      interface Tile
      class SpecializedTile
       interface "TileFactory<T extends Tile>" as TileFactory_T_ {
diff --git a/design/direct-localization-sequence-diagram.puml b/design/direct-localization-sequence-diagram.puml
index 1cfc5b36562214aa413044da0cab5e6e5a3d0a25..f0475efd97116f5a8960793b4c95af728f0dcf05 100644
--- a/design/direct-localization-sequence-diagram.puml
+++ b/design/direct-localization-sequence-diagram.puml
@@ -34,32 +34,45 @@
   participant "Application" as A
   participant "Interface" as I
   participant "Rugged" as R
+  participant "Algorithm" as G
   participant "Orekit" as O
 
   activate A
-  A  -> I : directLocalization(line)
+  A  -> I : directLocalization(name, number)
      activate I
-       I  -> R : directLocalization(line)
+       I  -> R : directLocalization(name, number)
        activate R
          R -> R : apply time stamping model
          R -> R : apply combined transform provider at date
          R -> R : loop over line pixels pâ‚–
          activate R
-           R -> O : convert(line-of-sight)
-           activate O
-             O --> R : line-of-sight in Earth frame
-           deactivate O
            R -> O : intersection(ellipsoid, line-of-sight)
-           activate O
-             O --> R : geodetic point
-           deactivate O
-           R -> R : DEM intersection
+           R -> R : fix speed of light delay in transforms
            activate R
-              R -> I : DEM callback
-              I --> R : DEM raw data cell
-              R --> R : φₖ, λₖ, hₖ
            deactivate R
-            R --> R : list(φₖ, λₖ, hₖ)
+           R -> G : intersection(ellipsoid, line-of-sight)
+           activate G
+             G -> O  : conversions
+             G -> R : elevation(φₖ, λₖ)
+             activate R
+               R -> I : DEM callback
+               I --> R : DEM raw data cell
+               R --> G : h(φₖ, λₖ)
+             deactivate R
+             G -> O  : conversions
+             G -> R : elevation(φₖ, λₖ)
+             activate R
+               R --> G : h(φₖ, λₖ)
+             deactivate R
+             G -> O  : conversions
+             G -> R : elevation(φₖ, λₖ)
+             activate R
+               R --> G : h(φₖ, λₖ)
+             deactivate R
+             G -> O  : conversions
+             G --> R : φₖ, λₖ, hₖ
+           deactivate G
+           R --> R : list(φₖ, λₖ, hₖ)
          deactivate R
          R --> I : list(φₖ, λₖ, hₖ)
        deactivate R
diff --git a/design/geometry-at-date-sequence-diagram.puml b/design/geometry-at-date-sequence-diagram.puml
index b63cf471f49697dc855a9cd167d9a1586c2ee232..38477f694097bfc34cb31a7a816ae931a15511f9 100644
--- a/design/geometry-at-date-sequence-diagram.puml
+++ b/design/geometry-at-date-sequence-diagram.puml
@@ -46,11 +46,7 @@
       activate O
       O --> R : Earth to inertial transform
       deactivate O
-    R -> O : compose transforms
-      activate O
-      O --> R : spacecraft to Earth transform
-      deactivate O
-      R --> C : spacecraft to Earth transform
+    R --> C : spacecraft to inertial, inertial to Earth
     deactivate R
   deactivate C
 
diff --git a/design/initialization-sequence-diagram.puml b/design/initialization-sequence-diagram.puml
index 60b238bad97fb3720e7dd1695f266881f76d07d4..09e785b235df37a0b5a8f02b3129cb67bad77573 100644
--- a/design/initialization-sequence-diagram.puml
+++ b/design/initialization-sequence-diagram.puml
@@ -40,28 +40,29 @@
     A -> I : init
     activate I
       I -> I : loadModels
-      I -> R : initiliaze(sensors, ephemeris)
+      I -> I : unfoldOpticalPath
+      activate I
+      deactivate I
+      I -> R : setGeneralContext(algorithm, frames, ellipsoid, ephemeris)
       activate R
-        R -> R : unfoldOpticalPath(sensors)
+        R -> O : createInterpolator(ephemeris)
+        activate O
+          O --> R : interpolating propagator
+        deactivate O
+        R -> R : createTransformProvider(interpolator)
         activate R
-          R -> O : composeTransforms
-          activate O
-            O --> R : sensors transforms
-          deactivate O
-        deactivate R
-       R -> O : createPropagator(ephemeris)
-         activate O
-           O --> R : interpolating propagator
-          deactivate O
-       R -> O : createTransformProvider(sensors transforms, propagator)
-         activate O
-           O --> R : combined TransformProvider with caching feature
-         deactivate O
+         deactivate R
       deactivate R
-      I -> R : registerLineTimeStampingModel
+      I -> R : setLineSensor(sensorName, pixels, datationModel)
       activate R
       deactivate R
-      I -> R : registerDEMCallback
+      I -> R : setLineSensor(sensorName, pixels, datationModel)
+      activate R
+      deactivate R
+      I -> R : setLineSensor(sensorName, pixels, datationModel)
+      activate R
+      deactivate R
+      I -> R : setUpTilesManagement(tileUpdater, maxCachedTiles)
       activate R
       deactivate R
     deactivate I
diff --git a/design/mayon-volcano.png b/design/mayon-volcano.png
new file mode 100644
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diff --git a/design/rugged-design.odt b/design/rugged-design.odt
index 5eb86e94c5bcc23ce0151eab286a49f4b946a8ef..b393e70471f8a3a69c8d89a9051447d5c048b2df 100644
Binary files a/design/rugged-design.odt and b/design/rugged-design.odt differ