Search Results for author: Masaki Onishi

Found 13 papers, 7 papers with code

TeamTrack: A Dataset for Multi-Sport Multi-Object Tracking in Full-pitch Videos

no code implementations22 Apr 2024 Atom Scott, Ikuma Uchida, Ning Ding, Rikuhei Umemoto, Rory Bunker, Ren Kobayashi, Takeshi Koyama, Masaki Onishi, Yoshinari Kameda, Keisuke Fujii

Multi-object tracking (MOT) is a critical and challenging task in computer vision, particularly in situations involving objects with similar appearances but diverse movements, as seen in team sports.

Benchmarking Multi-Object Tracking +2

Causal Effect Estimation on Hierarchical Spatial Graph Data

1 code implementation The 29th ACM SIGKDD Conference on Knowledge Discovery and Data Mining 2023 Koh Takeuchi, Ryo Nishida, Hisashi Kashima, Masaki Onishi

To address this problem, we propose a spatial intervention neural network (SINet) that leverages the hierarchical structure of spatial graphs to learn a rich representation of the covariates and the treatments and exploits this representation to predict a time series of treatment outcome.

Causal Inference Time Series

Efficient stereo matching on embedded GPUs with zero-means cross correlation

no code implementations1 Dec 2022 Qiong Chang, Aolong Zha, Weimin WANG, Xin Liu, Masaki Onishi, Lei Lei, Meng Joo Er, Tsutomu Maruyama

By combining this technique with the domain transformation (DT) algorithm, our system show real-time processing speed of 32 fps, on a Jetson Tx2 GPU for 1, 280x384 pixel images with a maximum disparity of 128.

Stereo Matching

How does AI play football? An analysis of RL and real-world football strategies

no code implementations24 Nov 2021 Atom Scott, Keisuke Fujii, Masaki Onishi

Recent advances in reinforcement learning (RL) have made it possible to develop sophisticated agents that excel in a wide range of applications.

Reinforcement Learning (RL)

Heterogeneous Grid Convolution for Adaptive, Efficient, and Controllable Computation

1 code implementation CVPR 2021 Ryuhei Hamaguchi, Yasutaka Furukawa, Masaki Onishi, Ken Sakurada

This paper proposes a novel heterogeneous grid convolution that builds a graph-based image representation by exploiting heterogeneity in the image content, enabling adaptive, efficient, and controllable computations in a convolutional architecture.

Clustering object-detection +5

Warm Starting CMA-ES for Hyperparameter Optimization

2 code implementations13 Dec 2020 Masahiro Nomura, Shuhei Watanabe, Youhei Akimoto, Yoshihiko Ozaki, Masaki Onishi

Hyperparameter optimization (HPO), formulated as black-box optimization (BBO), is recognized as essential for automation and high performance of machine learning approaches.

Bayesian Optimization Hyperparameter Optimization +1

Self-supervised Neural Audio-Visual Sound Source Localization via Probabilistic Spatial Modeling

no code implementations28 Jul 2020 Yoshiki Masuyama, Yoshiaki Bando, Kohei Yatabe, Yoko Sasaki, Masaki Onishi, Yasuhiro Oikawa

By incorporating with the spatial information in multichannel audio signals, our method trains deep neural networks (DNNs) to distinguish multiple sound source objects.

Self-Supervised Learning

Block-wise Scrambled Image Recognition Using Adaptation Network

no code implementations21 Jan 2020 Koki Madono, Masayuki Tanaka, Masaki Onishi, Tetsuji Ogawa

In this study, a perceptually hidden object-recognition method is investigated to generate secure images recognizable by humans but not machines.

Image Classification Object +1

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