I need an experienced Houdini artist to build a heightfield terrain pipeline that processes real NASA lunar elevation data (LOLA DEMs) into Unity 6 URP-ready assets. This is for scientifically accurate visualization of a specific lunar crater region - NOT procedural generation. The primary challenge: preserving steep crater slopes (30-45°) that standard Unity terrain tools cannot handle accurately. Your Houdini workflow must maintain scientific fidelity of the NASA source data while optimizing for real-time rendering on integrated GPUs. Key deliverables: - Documented Houdini .hip file processing NASA heightmaps → Unity assets - Terrain tiles with 3+ LOD levels maintaining slope accuracy - PBR texture sets: Albedo (from LROC imagery), Normals, Roughness, Slope maps - Elevation precision validation (Unity measurements must match NASA data ±1%) - Complete pipeline documentation for processing additional regions Timeline: 3-4 weeks, 3 milestones Budget: $250-750 USD REQUIRED IN BID: Answer three screening questions (see attached REQUIREMENTS.md) - Elevation data format experience - Steep slope preservation approach - Portfolio example of real-world data terrain work Full technical specifications attached as REQUIREMENTS.md