Use this workflow to turn a photogrammetry capture into a correctly scaled OBJ avatar for Marvelous Designer or CLO3D. Camera Server supplies the synchronized image dataset. RealityCapture or RealityScan creates the mesh, and Blender is an optional cleanup and scale-check stage.

The source guide referred to a specific historical studio camera count and old menu paths. The important requirements are a clean, well-overlapped image set and a known real-world measurement, not a fixed camera count.

Prepare the scan

1. Capture the subject in a simple pose with the arms slightly away from the body.
2. Keep lighting, exposure, focus, and subject position consistent across the dataset.
3. Export a working copy of the Camera Server dataset.
4. Convert RAW images to consistently processed JPEGs with Lightroom, Capture One, or another RAW processor.

Keep the original RAW files and the processed exports separate. Do not overwrite the captured dataset while preparing the photogrammetry input.

Reconstruct the avatar

1. Open RealityCapture or RealityScan and create a project.
2. Add the processed image set.
3. Align the images and review the camera positions and sparse point cloud.
4. Build a mesh at a detail level appropriate for cleanup and clothing simulation.
5. Remove the floor, background, noise, and other unwanted geometry.
6. Simplify the mesh to a practical polygon count for the target application. The right count depends on the subject and simulation needs; do not treat an old fixed triangle range as universal.
7. Generate a texture only if it is useful as a visual reference. A texture is optional for a base avatar used primarily for garment fitting.

Set real-world scale

Scale is essential because CLO3D and Marvelous Designer use real-world garment dimensions.

Scale in RealityCapture or RealityScan

1. Complete the reconstruction and open the scale or ground-plane workflow in the current application.
2. Place control points on two locations with a known distance, such as the top of the head and the floor, or two measured body landmarks.
3. Enter the measured distance and its units.
4. Apply the scale and transformation.
5. Record the measurement and units with the project.

Use measurements taken from the subject or capture setup. A guessed height can produce a visually plausible model that still causes incorrect garment dimensions.

Check or scale in Blender

If the photogrammetry project was not scaled:

1. Import the OBJ into Blender.
2. Open the Sidebar with N and use the Measure tool or a known reference object.
3. Scale the model until its dimensions match the recorded measurements.
4. Apply the scale with Ctrl+A and Apply Scale.
5. Set the origin to the geometry and verify the forward and up axes expected by the target application.
6. Export a new Wavefront OBJ with units and scale preserved.

The exact axis conversion depends on the target software and export version. Test the OBJ with a copy of the project before committing to a production workflow.

Export the avatar

Export the cleaned, scaled mesh as Wavefront OBJ. Include the material and texture files only when they are needed for the intended use. Keep the .obj, .mtl, and texture files together in one folder.

Before import, verify:

• The mesh is at the intended centimeter scale.
• The pose is suitable for garment fitting.
• The origin and axes are predictable.
• There is no unwanted floor or background geometry.
• The polygon count is practical for simulation.

Import into CLO3D or Marvelous Designer

Use the current application workflow to add the OBJ as an avatar or background OBJ, depending on whether garments must collide with it or only be aligned to it. Confirm the imported height and a second known measurement before creating patterns.

Use the avatar for:

• Garment draping and fit checks
• Pattern alignment
• Pose reference
• Custom mannequins

Run a short garment simulation first. Check collisions around the shoulders, arms, hips, and feet before increasing particle distance or simulating a longer animation.

Practical scan tips

• Use a simple pose with a small gap between the arms and torso.
• Measure height, shoulder width, and another useful body dimension before reconstruction.
• Keep the scan texture separate from the simulation mesh when performance matters.
• Save the scale measurement, export settings, and software versions with the OBJ.
• If the avatar appears at the wrong size, fix units and scale before adjusting garment patterns.