[HDR sampling and calib nodes]

Add calibrationMethod as parameter at sampling.
Link calibrationMethod parameter of calib node to sampling node's calibrationMethod parameter in both HDR pipelines.

meshroom/nodes/aliceVision/LdrToHdrSampling.py

@@ -81,9 +81,23 @@ class LdrToHdrSampling(desc.AVCommandLineNode):
             description="Bypass HDR creation and use the medium bracket as the source for the next steps",
             value=False,
             uid=[0],
-            group='internal',
             enabled= lambda node: node.nbBrackets.value != 1,
         ),
+        desc.ChoiceParam(
+            name='calibrationMethod',
+            label='Calibration Method',
+            description="Method used for camera calibration \n"
+                        " * Linear: Disable the calibration and assumes a linear Camera Response Function. If images are encoded in a known colorspace (like sRGB for JPEG), the images will be automatically converted to linear. \n"
+                        " * Debevec: This is the standard method for HDR calibration. \n"
+                        " * Grossberg: Based on learned database of cameras, it allows to reduce the CRF to few parameters while keeping all the precision. \n"
+                        " * Laguerre: Simple but robust method estimating the minimal number of parameters. \n"
+                        " * Robertson: First method for HDR calibration in the literature. \n",
+            values=['linear', 'debevec', 'grossberg', 'laguerre'],
+            value='debevec',
+            exclusive=True,
+            uid=[0],
+            enabled= lambda node: node.byPass.enabled and not node.byPass.value,
+        ),
         desc.IntParam(
             name='channelQuantizationPower',
             label='Channel Quantization Power',
@@ -164,7 +178,7 @@ class LdrToHdrSampling(desc.AVCommandLineNode):
     ]
 
     def processChunk(self, chunk):
-        if chunk.node.nbBrackets.value == 1 or chunk.node.byPass.value:
+        if chunk.node.nbBrackets.value == 1:
             return
         super(LdrToHdrSampling, self).processChunk(chunk)
 

meshroom/pipelines/panoramaFisheyeHdr.mg

@@ -68,7 +68,8 @@
                 "byPass": "{LdrToHdrSampling_1.byPass}", 
                 "input": "{LdrToHdrSampling_1.input}", 
                 "userNbBrackets": "{LdrToHdrSampling_1.userNbBrackets}",
-                "workingColorSpace": "{LdrToHdrSampling_1.workingColorSpace}"
+                "workingColorSpace": "{LdrToHdrSampling_1.workingColorSpace}",
+                "calibrationMethod": "{LdrToHdrSampling_1.calibrationMethod}"
             }, 
             "nodeType": "LdrToHdrCalibration", 
             "position": [

meshroom/pipelines/panoramaHdr.mg

@@ -68,7 +68,8 @@
                 "byPass": "{LdrToHdrSampling_1.byPass}", 
                 "input": "{LdrToHdrSampling_1.input}", 
                 "userNbBrackets": "{LdrToHdrSampling_1.userNbBrackets}",
-                "workingColorSpace": "{LdrToHdrSampling_1.workingColorSpace}"
+                "workingColorSpace": "{LdrToHdrSampling_1.workingColorSpace}",
+                "calibrationMethod": "{LdrToHdrSampling_1.calibrationMethod}"
             }, 
             "nodeType": "LdrToHdrCalibration", 
             "position": [