attr: rename "IntegerLift" coding method to "Pred"

The IntegerLift name is misleading in light of a separate coding method
that uses lifting predict and update operators.  This commit renames
the method to specify it is a prediction-only scheme.

tmc3/AttributeDecoder.cpp

@@ -193,7 +193,7 @@ AttributeDecoder::decodeReflectances(
     break;
 
   case TransformType::kIntegerLift:
-    decodeReflectancesIntegerLift(decoder, pointCloud);
+    decodeReflectancesPred(decoder, pointCloud);
     break;
 
   case TransformType::kLift:
@@ -222,7 +222,7 @@ AttributeDecoder::decodeColors(
   case TransformType::kRAHT: decodeColorsRaht(decoder, pointCloud); break;
 
   case TransformType::kIntegerLift:
-    decodeColorsIntegerLift(decoder, pointCloud);
+    decodeColorsPred(decoder, pointCloud);
     break;
 
   case TransformType::kLift: decodeColorsLift(decoder, pointCloud); break;
@@ -271,7 +271,7 @@ computeReflectancePredictionWeights(
 //----------------------------------------------------------------------------
 
 void
-AttributeDecoder::decodeReflectancesIntegerLift(
+AttributeDecoder::decodeReflectancesPred(
   PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud)
 {
   std::vector<PCCPredictor> predictors;
@@ -347,7 +347,7 @@ AttributeDecoder::computeColorPredictionWeights(
 //----------------------------------------------------------------------------
 
 void
-AttributeDecoder::decodeColorsIntegerLift(
+AttributeDecoder::decodeColorsPred(
   PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud)
 {
   std::vector<PCCPredictor> predictors;

tmc3/AttributeDecoder.h

@@ -69,11 +69,11 @@ protected:
   void
   decodeColorsLift(PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud);
 
-  void decodeReflectancesIntegerLift(
+  void decodeReflectancesPred(
     PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud);
 
-  void decodeColorsIntegerLift(
-    PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud);
+  void
+  decodeColorsPred(PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud);
 
   void decodeReflectancesRaht(
     PCCResidualsDecoder& decoder, PCCPointSet3& pointCloud);

tmc3/AttributeEncoder.cpp

@@ -339,7 +339,7 @@ AttributeEncoder::encodeReflectances(
     break;
 
   case TransformType::kIntegerLift:
-    encodeReflectancesIntegerLift(reflectanceParams, pointCloud, encoder);
+    encodeReflectancesPred(reflectanceParams, pointCloud, encoder);
     break;
 
   case TransformType::kLift:
@@ -373,7 +373,7 @@ AttributeEncoder::encodeColors(
     break;
 
   case TransformType::kIntegerLift:
-    encodeColorsIntegerLift(colorParams, pointCloud, encoder);
+    encodeColorsPred(colorParams, pointCloud, encoder);
     break;
 
   case TransformType::kLift:
@@ -456,7 +456,7 @@ AttributeEncoder::computeReflectancePredictionWeights(
 //----------------------------------------------------------------------------
 
 void
-AttributeEncoder::encodeReflectancesIntegerLift(
+AttributeEncoder::encodeReflectancesPred(
   const PCCAttributeEncodeParamaters& reflectanceParams,
   PCCPointSet3& pointCloud,
   PCCResidualsEncoder& encoder)
@@ -585,7 +585,7 @@ AttributeEncoder::computeColorPredictionWeights(
 //----------------------------------------------------------------------------
 
 void
-AttributeEncoder::encodeColorsIntegerLift(
+AttributeEncoder::encodeColorsPred(
   const PCCAttributeEncodeParamaters& colorParams,
   PCCPointSet3& pointCloud,
   PCCResidualsEncoder& encoder)

tmc3/AttributeEncoder.h

@@ -97,12 +97,12 @@ protected:
     PCCPointSet3& pointCloud,
     PCCResidualsEncoder& encoder);
 
-  void encodeReflectancesIntegerLift(
+  void encodeReflectancesPred(
     const PCCAttributeEncodeParamaters& reflectanceParams,
     PCCPointSet3& pointCloud,
     PCCResidualsEncoder& encoder);
 
-  void encodeColorsIntegerLift(
+  void encodeColorsPred(
     const PCCAttributeEncodeParamaters& colorParams,
     PCCPointSet3& pointCloud,
     PCCResidualsEncoder& encoder);

tmc3/TMC3.cpp

@@ -287,9 +287,9 @@ ParseParameters(int argc, char* argv[], Parameters& params)
   ("transformType",
     params_attr.transformType, TransformType::kIntegerLift,
     "Coding method to use for attribute:\n"
-    "  0: Nearest neighbour prediction with integer lifting transform\n"
+    "  0: Hierarchical neighbourhood prediction\n"
     "  1: Region Adaptive Hierarchical Transform (RAHT)\n"
-    "  2: Nearest neighbour prediction with lifting transform")
+    "  2: Hierarichical neighbourhood prediction as lifting transform")
 
   ("rahtLeafDecimationDepth",
     params_attr.binaryLevelThresholdRaht, 3,