Search Results for author: Kazuyuki Demachi

Found 7 papers, 3 papers with code

Quater-GCN: Enhancing 3D Human Pose Estimation with Orientation and Semi-supervised Training

no code implementations30 Apr 2024 Xingyu Song, Zhan Li, Shi Chen, Kazuyuki Demachi

3D human pose estimation is a vital task in computer vision, involving the prediction of human joint positions from images or videos to reconstruct a skeleton of a human in three-dimensional space.

3D Human Pose Estimation 3D Pose Estimation

Respiratory motion forecasting with online learning of recurrent neural networks for safety enhancement in externally guided radiotherapy

no code implementations3 Mar 2024 Michel Pohl, Mitsuru Uesaka, Hiroyuki Takahashi, Kazuyuki Demachi, Ritu Bhusal Chhatkuli

We use UORO, SnAp-1, and DNI to forecast each marker's 3D position with horizons (the time interval in advance for which the prediction is made) h<=2. 1s and compare them with RTRL, least mean squares, and linear regression.

Motion Forecasting Position +1

GTAutoAct: An Automatic Datasets Generation Framework Based on Game Engine Redevelopment for Action Recognition

no code implementations24 Jan 2024 Xingyu Song, Zhan Li, Shi Chen, Kazuyuki Demachi

Current datasets for action recognition tasks face limitations stemming from traditional collection and generation methods, including the constrained range of action classes, absence of multi-viewpoint recordings, limited diversity, poor video quality, and labor-intensive manually collection.

Action Recognition

Cross-Task Consistency Learning Framework for Multi-Task Learning

1 code implementation28 Nov 2021 Akihiro Nakano, Shi Chen, Kazuyuki Demachi

We theoretically prove that both losses help the model learn more efficiently and that cross-task consistency loss is better in terms of alignment with the straight-forward predictions.

Contrastive Learning Multi-Task Learning

Prediction of the Position of External Markers Using a Recurrent Neural Network Trained With Unbiased Online Recurrent Optimization for Safe Lung Cancer Radiotherapy

1 code implementation2 Jun 2021 Michel Pohl, Mitsuru Uesaka, Hiroyuki Takahashi, Kazuyuki Demachi, Ritu Bhusal Chhatkuli

Prediction with online learning of recurrent neural networks (RNN) allows for adaptation to non-stationary respiratory signals, but classical methods such as RTRL and truncated BPTT are respectively slow and biased.

Multivariate Time Series Forecasting Position +3

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