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We propose a novel method for privacy-preserving deep neural networks (DNNs) with the Vision Transformer (ViT). The method allows us not only to train models and test with visually protected images but to also avoid the performance…

Computer Vision and Pattern Recognition · Computer Science 2024-02-12 Teru Nagamori , Sayaka Shiota , Hitoshi Kiya

We propose a privacy-preserving semantic-segmentation method for applying perceptual encryption to images used for model training in addition to test images. This method also provides almost the same accuracy as models without any…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Homare Sueyoshi , Kiyoshi Nishikawa , Hitoshi Kiya

In this paper, we propose a combined use of transformed images and vision transformer (ViT) models transformed with a secret key. We show for the first time that models trained with plain images can be directly transformed to models trained…

Computer Vision and Pattern Recognition · Computer Science 2023-01-11 Hitoshi Kiya , Ryota Iijima , MaungMaung Aprilpyone , Yuma Kinoshita

We propose a novel method for privacy-preserving fine-tuning vision transformers (ViTs) with encrypted images. Conventional methods using encrypted images degrade model performance compared with that of using plain images due to the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-19 Kouki Horio , Kiyoshi Nishikawa , Hitoshi Kiya

We propose a transformation network for generating visually-protected images for privacy-preserving DNNs. The proposed transformation network is trained by using a plain image dataset so that plain images are transformed into visually…

Image and Video Processing · Electrical Eng. & Systems 2020-08-10 Hiroki Ito , Yuma Kinoshita , Hitoshi Kiya

Unsupervised domain adaptation (UDA) aims to transfer knowledge from a labeled source domain to an unlabeled target domain. The most recent UDA methods always resort to adversarial training to yield state-of-the-art results and a dominant…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Yahan Li , Yuan Wu

In this paper, we propose a privacy-preserving image classification method that is based on the combined use of encrypted images and the vision transformer (ViT). The proposed method allows us not only to apply images without visual…

Computer Vision and Pattern Recognition · Computer Science 2022-05-25 Zheng Qi , AprilPyone MaungMaung , Yuma Kinoshita , Hitoshi Kiya

While recent face anti-spoofing methods perform well under the intra-domain setups, an effective approach needs to account for much larger appearance variations of images acquired in complex scenes with different sensors for robust…

Computer Vision and Pattern Recognition · Computer Science 2023-08-01 Hsin-Ping Huang , Deqing Sun , Yaojie Liu , Wen-Sheng Chu , Taihong Xiao , Jinwei Yuan , Hartwig Adam , Ming-Hsuan Yang

Unsupervised Domain Adaptation (UDA) methods facilitate knowledge transfer from a labeled source domain to an unlabeled target domain, navigating the obstacle of domain shift. While Convolutional Neural Networks (CNNs) are a staple in UDA,…

Computer Vision and Pattern Recognition · Computer Science 2023-12-05 Gauransh Sawhney , Daksh Dave , Adeel Ahmed , Jiechao Gao , Khalid Saleem

We propose a low-rank adaptation method for training privacy-preserving vision transformer (ViT) models that efficiently freezes pre-trained ViT model weights. In the proposed method, trainable rank decomposition matrices are injected into…

Cryptography and Security · Computer Science 2025-07-17 Haiwei Lin , Shoko Imaizumi , Hitoshi Kiya

Privacy-preserving and secure data sharing are critical for medical image analysis while maintaining accuracy and minimizing computational overhead are also crucial. Applying existing deep neural networks (DNNs) to encrypted medical data is…

Cryptography and Security · Computer Science 2024-11-12 Al Amin , Kamrul Hasan , Sharif Ullah , M. Shamim Hossain

We present a novel privacy-preserving scheme for deep neural networks (DNNs) that enables us not to only apply images without visual information to DNNs for both training and testing but to also consider data augmentation in the encrypted…

Cryptography and Security · Computer Science 2019-05-07 Warit Sirichotedumrong , Takahiro Maekawa , Yuma Kinoshita , Hitoshi Kiya

Domain adaptation (DA) aims at improving the performance of a model on target domains by transferring the knowledge contained in different but related source domains. With recent advances in deep learning models which are extremely data…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Gabriela Csurka

The vision transformer-based foundation models, such as ViT or Dino-V2, are aimed at solving problems with little or no finetuning of features. Using a setting of prototypical networks, we analyse to what extent such foundation models can…

Computer Vision and Pattern Recognition · Computer Science 2024-02-26 Dmitry Kangin , Plamen Angelov

Transformers are popular neural network models that use layers of self-attention and fully-connected nodes with embedded tokens. Vision Transformers (ViT) adapt transformers for image recognition tasks. In order to do this, the images are…

Computer Vision and Pattern Recognition · Computer Science 2023-04-28 Brian Kenji Iwana , Akihiro Kusuda

This paper addresses domain adaptation for the pixel-wise classification of remotely sensed data using deep neural networks (DNN) as a strategy to reduce the requirements of DNN with respect to the availability of training data. We focus on…

Computer Vision and Pattern Recognition · Computer Science 2021-08-18 Dennis Wittich , Franz Rottensteiner

Deep neural networks (DNNs) are well known to be vulnerable to adversarial examples (AEs). In previous studies, the use of models encrypted with a secret key was demonstrated to be robust against white-box attacks, but not against black-box…

Artificial Intelligence · Computer Science 2024-02-13 Ryota Iijima , Sayaka Shiota , Hitoshi Kiya

We propose a novel method for securely training the vision transformer (ViT) with sensitive data shared from multiple clients similar to privacy-preserving federated learning. In the proposed method, training images are independently…

Cryptography and Security · Computer Science 2024-08-13 Rei Aso , Sayaka Shiota , Hitoshi Kiya

LiDAR-based 3D object detectors have been largely utilized in various applications, including autonomous vehicles or mobile robots. However, LiDAR-based detectors often fail to adapt well to target domains with different sensor…

Computer Vision and Pattern Recognition · Computer Science 2024-10-03 Jiyun Jang , Mincheol Chang , Jongwon Park , Jinkyu Kim

Vision Transformer (ViT) has demonstrated promising performance in computer vision tasks, comparable to state-of-the-art neural networks. Yet, this new type of deep neural network architecture is vulnerable to adversarial attacks limiting…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Shashank Kotyan , Danilo Vasconcellos Vargas
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