activity
20182026
most citedCutDepth:Edge-aware Data Augmentation in Depth Estimation

19 citations · 28 across the 15 of their papers we have counts for

collaborators

15 papers

cs.CL2026

Structured Pruning of Large Language Models via Power Transformation and Sign-Preserving Score Aggregation with Adaptive Feature Retention

Ryota Kobayashi, Tsubasa Hirakawa, Takayoshi Yamashita +4

This paper proposes an improved structured pruning method for large language models (LLMs) that addresses key challenges in adapting Adaptive Feature Retention (AFR), an unstructur…

cs.CV2025

Bidirectional Action Sequence Learning for Long-term Action Anticipation with Large Language Models

Yuji Sato, Yasunori Ishii, Takayoshi Yamashita

Video-based long-term action anticipation is crucial for early risk detection in areas such as automated driving and robotics. Conventional approaches extract features from past ac…

cs.CV2025

VideoMultiAgents: A Multi-Agent Framework for Video Question Answering

Noriyuki Kugo, Xiang Li, Zixin Li +9

Video Question Answering (VQA) inherently relies on multimodal reasoning, integrating visual, temporal, and linguistic cues to achieve a deeper understanding of video content. Howe…

cs.CV2025

Panoramic Distortion-Aware Tokenization for Person Detection and Localization in Overhead Fisheye Images

Nobuhiko Wakai, Satoshi Sato, Yasunori Ishii +1

Person detection in overhead fisheye images is challenging due to person rotation and small persons. Prior work has mainly addressed person rotation, leaving the small-person probl…

cs.CV2023

hear-your-action: human action recognition by ultrasound active sensing

Risako Tanigawa, Yasunori Ishii

Action recognition is a key technology for many industrial applications. Methods using visual information such as images are very popular. However, privacy issues prevent widesprea…

cs.CV2023

PALF: Pre-Annotation and Camera-LiDAR Late Fusion for the Easy Annotation of Point Clouds

Yucheng Zhang, Masaki Fukuda, Yasunori Ishii +2

3D object detection has become indispensable in the field of autonomous driving. To date, gratifying breakthroughs have been recorded in 3D object detection research, attributed to…

cs.CV2023★ 5 cited

Deep Single Image Camera Calibration by Heatmap Regression to Recover Fisheye Images Under Manhattan World Assumption

Nobuhiko Wakai, Satoshi Sato, Yasunori Ishii +1

A Manhattan world lying along cuboid buildings is useful for camera angle estimation. However, accurate and robust angle estimation from fisheye images in the Manhattan world has r…

cs.CV2023

Masking and Mixing Adversarial Training

Hiroki Adachi, Tsubasa Hirakawa, Takayoshi Yamashita +3

While convolutional neural networks (CNNs) have achieved excellent performances in various computer vision tasks, they often misclassify with malicious samples, a.k.a. adversarial…

cs.CV2022

Data Augmentation by Selecting Mixed Classes Considering Distance Between Classes

Shungo Fujii, Yasunori Ishii, Kazuki Kozuka +3

Data augmentation is an essential technique for improving recognition accuracy in object recognition using deep learning. Methods that generate mixed data from multiple data sets,…

cs.CV2022

Few-shot Adaptive Object Detection with Cross-Domain CutMix

Yuzuru Nakamura, Yasunori Ishii, Yuki Maruyama +1

In object detection, data amount and cost are a trade-off, and collecting a large amount of data in a specific domain is labor intensive. Therefore, existing large-scale datasets a…

cs.CV2022★ 1 cited

Invisible-to-Visible: Privacy-Aware Human Segmentation using Airborne Ultrasound via Collaborative Learning Probabilistic U-Net

Risako Tanigawa, Yasunori Ishii, Kazuki Kozuka +1

Color images are easy to understand visually and can acquire a great deal of information, such as color and texture. They are highly and widely used in tasks such as segmentation.…

cs.CV2022

Invisible-to-Visible: Privacy-Aware Human Instance Segmentation using Airborne Ultrasound via Collaborative Learning Variational Autoencoder

Risako Tanigawa, Yasunori Ishii, Kazuki Kozuka +1

In action understanding in indoor, we have to recognize human pose and action considering privacy. Although camera images can be used for highly accurate human action recognition,…

cs.CV2021

Rethinking Generic Camera Models for Deep Single Image Camera Calibration to Recover Rotation and Fisheye Distortion

Nobuhiko Wakai, Satoshi Sato, Yasunori Ishii +1

Although recent learning-based calibration methods can predict extrinsic and intrinsic camera parameters from a single image, the accuracy of these methods is degraded in fisheye i…

cs.CV2021★ 19 cited

CutDepth:Edge-aware Data Augmentation in Depth Estimation

Yasunori Ishii, Takayoshi Yamashita

It is difficult to collect data on a large scale in a monocular depth estimation because the task requires the simultaneous acquisition of RGB images and depths. Data augmentation…

cs.CV2018★ 3 cited

Explain to Fix: A Framework to Interpret and Correct DNN Object Detector Predictions

Denis Gudovskiy, Alec Hodgkinson, Takuya Yamaguchi +2

Explaining predictions of deep neural networks (DNNs) is an important and nontrivial task. In this paper, we propose a practical approach to interpret decisions made by a DNN objec…