Poster + Paper
13 June 2023 Out-of-distribution 3D object generation for enhanced pose estimation
J. Brennan Peace, Benjamin S. Riggan
Author Affiliations +
Conference Poster
Abstract
Contemporary object pose estimation algorithms predict transformation parameters of perspectives of objects from a reference pose. Learning these parameters often requires significantly more data than conventional sensors provide. Therefore, synthetic data is frequently used to increase the amount of data, number of object perspectives, and number of object classes, which is beneficial for improving the generalization of pose estimation algorithms. However, robust synthesis of objects from different perspectives requires manually setting precision describing increments between pose angles. Consequently, learning from arbitrarily small increments requires very precise sampling from existing sensor data, which increases time, complexity, and resources necessary for a larger sample size. Therefore, there is a need to minimize the amount of sampling and processing required for synthesis methods (e.g., generative) which have difficulty producing samples that lie outside of groups within the latent space resulting in modal collapse. While reducing the number of observed object perspectives directly addresses this problem, generative models have issues synthesizing out-of-distribution (OOD) data. We study the effects of synthesizing OOD data by exploiting orthogonality constraints to synthesize intermediate poses of 3D point cloud object representations that are not observed during training. Additionally, we perform an ablation study on each axial rotation for poses and the OOD generative capabilities between different model types. We test and evaluate our proposed method using objects from ShapeNet.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. Brennan Peace and Benjamin S. Riggan "Out-of-distribution 3D object generation for enhanced pose estimation", Proc. SPIE 12529, Synthetic Data for Artificial Intelligence and Machine Learning: Tools, Techniques, and Applications, 1252911 (13 June 2023); https://doi.org/10.1117/12.2665333
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KEYWORDS
Point clouds

Pose estimation

3D modeling

3D image processing

Computer vision technology

Deep learning

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