vxg139 opened this issue on Jan 25, 2026 · 8 posts
adp001 posted Mon, 26 January 2026 at 5:07 AM
I asked "Perplexity" about the Topic. Here is the answer:
There has been some discussion about using OpenPose and then generating BVH via AI scripts (e.g. Grok) to get poses into Poser. For single images, that’s honestly a lot more complex than it needs to be.
A few important points:
From a single OpenPose image you only get one static pose, not an animation.
BVH is primarily an animation / motion‑capture format (many frames), and Poser’s BVH importer is mainly intended for that use case.[posersoftware]
In practice, even when people import BVH into Poser, they usually go to one frame they like, tweak the figure, and then save a normal Poser pose (.pz2) into their library.renderosity+1
So instead of going “OpenPose → BVH → Poser → save pose”, it’s often simpler to go “OpenPose → small script → Poser pose file (.pz2)” directly.
Below is a minimal Python script that demonstrates the idea. It does not talk to OpenPose itself; it expects you to supply joint rotations per bone. But once you’ve mapped your OpenPose data to bone angles, this script will:
Take a dictionary of bone rotations.
Write a standard Poser pose file (.pz2) that you can drop into your Runtime and use like any other pose.
This example is deliberately generic and uses common bone names for Poser figures like La Femme / La Femme 2 (hips, abdomen, chest, shoulders, forearms, thighs, shins). You can easily adapt the bone names if you target Michael 4 or others.
How to use:
Save the script as
openpose_to_poser_pose.py.Edit the
pose_datadictionary at the bottom:
Keys = bone names as they appear in your Poser figure (e.g.
hip,abdomen,chest,lShldr,rShldr,lForeArm,rForeArm, etc.).Values =
(rx_deg, ry_deg, rz_deg)rotations (in degrees) for that bone.Run it with Python (outside Poser is fine).
It will create
openpose_pose.pz2.Put that file into
Runtime\Libraries\Pose\YourFolder\and refresh the library in Poser.[posersoftware]Apply it to your figure like any other pose.
Obviously, a “real” OpenPose integration would convert keypoints to joint angles automatically, but that’s a separate math problem. This script is the final step: turn a list of joint angles into a Poser‑ready pose file without needing BVH or Grok.
PYTHON""" Simple example: create a Poser .pz2 pose file from a set of joint rotations. - Assumes a figure with standard bone names (e.g. La Femme / La Femme 2 style). - You provide rotations in degrees for each bone you want to pose. - Output is a text-based .pz2 that Poser can load as a pose. Usage: python openpose_to_poser_pose.py """ from pathlib import Path def write_poser_pose(pose_data, output_path, pose_name="OpenPose_Pose"): """ pose_data: dict mapping bone_name -> (rx_deg, ry_deg, rz_deg) Rotations in degrees, XYZ order for simplicity. output_path: path to .pz2 file (string or Path) pose_name: comment header inside the file """ lines = [] lines.append(f'// {pose_name}') lines.append('') lines.append('{') lines.append('\tversion 4') lines.append('\tactor BODY:1') lines.append('\t{') lines.append('\t\tchannels { }') lines.append('\t}') lines.append('') for bone, (rx, ry, rz) in pose_data.items(): # Each "actor" corresponds to one bone of the figure lines.append(f'\tactor {bone}:1') lines.append('\t{') lines.append('\t\tchannels') lines.append('\t\t{') # X rotation lines.append('\t\t\tchannel rX') lines.append('\t\t\t{') lines.append('\t\t\t\tkeys') lines.append('\t\t\t\t{') lines.append(f'\t\t\t\t\tstatic {float(rx):.4f}') lines.append('\t\t\t\t}') lines.append('\t\t\t}') # Y rotation lines.append('\t\t\tchannel rY') lines.append('\t\t\t{') lines.append('\t\t\t\tkeys') lines.append('\t\t\t\t{') lines.append(f'\t\t\t\t\tstatic {float(ry):.4f}') lines.append('\t\t\t\t}') lines.append('\t\t\t}') # Z rotation lines.append('\t\t\tchannel rZ') lines.append('\t\t\t{') lines.append('\t\t\t\tkeys') lines.append('\t\t\t\t{') lines.append(f'\t\t\t\t\tstatic {float(rz):.4f}') lines.append('\t\t\t\t}') lines.append('\t\t\t}') lines.append('\t\t}') lines.append('\t}') lines.append('') lines.append('}') output_path = Path(output_path) output_path.write_text("\n".join(lines), encoding="utf-8") print(f"Wrote pose to {output_path.resolve()}") if __name__ == "__main__": # ------------------------------------------------------------------ # Example rotations for a simple pose. # Replace these with angles derived from your OpenPose pipeline. # # Bone names here are typical for Poser figures like La Femme: # "hip", "abdomen", "chest", "lShldr", "lForeArm", "rShldr", "rForeArm", # "lThigh", "lShin", "rThigh", "rShin", etc. # Check the actual hierarchy in Poser if your figure uses different names. # ------------------------------------------------------------------ pose_data = { # torso "hip": (0.0, 0.0, 0.0), "abdomen": (5.0, 0.0, 0.0), "chest": (10.0, 0.0, 0.0), # left arm "lShldr": (0.0, 30.0, 0.0), "lForeArm": (0.0, 60.0, 0.0), # right arm "rShldr": (0.0, -30.0, 0.0), "rForeArm": (0.0, -60.0, 0.0), # left leg "lThigh": (0.0, 20.0, 0.0), "lShin": (0.0, -40.0, 0.0), # right leg "rThigh": (0.0, 20.0, 0.0), "rShin": (0.0, -40.0, 0.0), } # Output file name (relative to where you run the script) output_file = "openpose_pose.pz2" write_poser_pose(pose_data, output_file, pose_name="OpenPose_Demo_Pose")You can extend this with more bones (hands, fingers, neck, head, toes, etc.) as long as you know the bone names and rotation directions for your specific figure. For La Femme / La Femme 2, the body part names are documented and
You can extend this with more bones (hands, fingers, neck, head, toes, etc.) as long as you know the bone names and rotation directions for your specific figure. For La Femme / La Femme 2, the body part names are documented and consistent, which makes thi