Search Results for author: Kazuyuki Demachi

Found 6 papers, 3 papers with code

An Animation-based Augmentation Approach for Action Recognition from Discontinuous Video

no code implementations10 Apr 2024 Xingyu Song, Zhan Li, Shi Chen, Xin-Qiang Cai, Kazuyuki Demachi

(3) We achieve the same performance with only 10% of the original data for training as with all of the original data from the real-world dataset, and a better performance on In-the-wild videos, by employing our data augmentation techniques.

Action Recognition Data Augmentation

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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