XangleCs documentation

This guide explains how to process the RAW photo set provided by the Xangle team, prepare it in Lightroom, and generate a .OBJ file in RealityCapture.

1. Process the RAW Files in Lightroom

1. Import the RAW files into Adobe Lightroom Classic.
2. Apply basic adjustments:
   • Enable lens correction.
   • Set white balance (keep consistent for all images).
   • Adjust exposure only if necessary. Avoid over-processing.
   • Remove chromatic aberration.
3. Sync settings across all images so they remain uniform.
4. Export as JPG (or PNG if required by the project) using these settings:
   • Quality: 100
   • Resolution: 300 ppi
   • Color space: sRGB
   • Size: Original dimensions
5. Place the exported JPGs into a new folder dedicated to RealityCapture processing.

2. Create a New RealityCapture Project

1. Open RealityCapture.
2. Go to File → New.
3. Save your project (.rcproj) immediately in a working folder alongside your processed images.

3. Import Images

1. Drag and drop the exported JPG folder into RealityCapture

   OR click Workflow → Add Images to select them.

2. Wait for all thumbnails to appear in the 1Ds view.

4. Align Images

1. Click Workflow → Align Images.
   • RealityCapture will analyze the images and calculate camera positions.
2. After alignment:
   • Verify in 3D view that all cameras are placed correctly.
   • Ensure the sparse point cloud covers the entire subject.
3. If cameras are unaligned, try:
   • Removing low-quality images.
   • Re-running Align Images.

5. Build the Mesh

1. Go to Reconstruction settings and choose Normal Detail (or High Detail for more precision).
2. Click Start to generate the mesh.
3. Inspect the mesh for:
   • Missing areas.
   • Unwanted background geometry.

6. Clean the Mesh

1. Switch to Scene 3D view.
2. Use Selection Tools (lasso, rectangle, 3D brush) to select unwanted geometry.
3. Press Delete to remove it.
4. (Optional) Use Tools → Simplify Tool to reduce polygon count while retaining detail.

7. Generate Textures

1. Go to Workflow → Texture.
2. Set:
   • Texture size: 8K or 16K (based on GPU capacity).
   • Texture count: 1 for most subjects.
3. Click Start to bake the texture.

8. Export the OBJ

1. Go to Workflow → Export Model.
2. Select Wavefront OBJ (.obj).
3. Enable:
   • Export mesh
   • Export texture
4. Choose the save location and name your file.
5. Click Save. RealityCapture will output:
   • .OBJ (geometry)
   • .MTL (material definition)
   • .JPG or .PNG (texture)

9. Verify the Model

1. Open the .OBJ in your preferred 3D software (Blender, Cinema 4D, etc.).
2. Check:
   • Correct scale
   • Proper texture mapping
   • Clean geometry

Tip: If the model needs to match real-world dimensions, use RealityCapture’s scale tool before export by referencing a known measurement from the capture session.