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487 results on '"Wu, Ja-Ling"'

1. Image Data Hiding in Neural Compressed Latent Representations

Author

Huang, Chen-Hsiu and Wu, Ja-Ling

Subjects
Computer Science - Cryptography and Security, Computer Science - Computer Vision and Pattern Recognition
Abstract

We propose an end-to-end learned image data hiding framework that embeds and extracts secrets in the latent representations of a generic neural compressor. By leveraging a perceptual loss function in conjunction with our proposed message encoder and decoder, our approach simultaneously achieves high image quality and high bit accuracy. Compared to existing techniques, our framework offers superior image secrecy and competitive watermarking robustness in the compressed domain while accelerating the embedding speed by over 50 times. These results demonstrate the potential of combining data hiding techniques and neural compression and offer new insights into developing neural compression techniques and their applications., Comment: 5 pages, 5 figure; accepted by VCIP 2023

Published
2023

2. CPIPS: Learning to Preserve Perceptual Distances in End-to-End Image Compression

Author

Huang, Chen-Hsiu and Wu, Ja-Ling

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Multimedia, Electrical Engineering and Systems Science - Image and Video Processing
Abstract

Lossy image coding standards such as JPEG and MPEG have successfully achieved high compression rates for human consumption of multimedia data. However, with the increasing prevalence of IoT devices, drones, and self-driving cars, machines rather than humans are processing a greater portion of captured visual content. Consequently, it is crucial to pursue an efficient compressed representation that caters not only to human vision but also to image processing and machine vision tasks. Drawing inspiration from the efficient coding hypothesis in biological systems and the modeling of the sensory cortex in neural science, we repurpose the compressed latent representation to prioritize semantic relevance while preserving perceptual distance. Our proposed method, Compressed Perceptual Image Patch Similarity (CPIPS), can be derived at a minimal cost from a learned neural codec and computed significantly faster than DNN-based perceptual metrics such as LPIPS and DISTS., Comment: 7 pages, 5 figures; accepted by APSIPA ASC 2023

Published
2023

3. Joint Image Data Hiding and Rate-Distortion Optimization in Neural Compressed Latent Representations

Author

Huang, Chen-Hsiu, Wu, Ja-Ling, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Rudinac, Stevan, editor, Hanjalic, Alan, editor, Liem, Cynthia, editor, Worring, Marcel, editor, Jónsson, Björn Þór, editor, Liu, Bei, editor, and Yamakata, Yoko, editor

Published
2024
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4. Image data hiding with multi-scale autoencoder network

Author

Huang, Chen-Hsiu and Wu, Ja-Ling

Subjects
Computer Science - Cryptography and Security, Computer Science - Multimedia
Abstract

mage steganography is the process of hiding information which can be text, image, or video inside a cover image. The advantage of steganography over cryptography is that the intended secret message does not attract attention and is thus more suitable for secret communication in a highly-surveillant environment such as civil disobedience movements. Internet memes in social media and messaging apps have become a popular culture worldwide, so this folk custom is a good application scenario for image steganography. We try to explore and adopt the steganography techniques on the Internet memes in this work. We implement and improve the HiDDeN model by changing the Conv-BN-ReLU blocks convolution layer with a multiscale autoencoder network so that the neural network learns to embed message bits in higher-level feature space. Compared to methods that convolve feature filters on the row-pixel domain, our proposed MS-Hidden network learns to hide secrets in both low-level and high-level image features. As a result, the proposed model significantly reduces the bit-error rate to empirically 0% and the required network parameters are much less than the HiDDeN model., Comment: accepted by Media Watermarking, Security, and Forensics 2022

Published
2022

6. Design and Development of a Blockchain-Based Secure Scoring Mechanism for Online Learning

Author

Tsai, Cheng-Ting, Wu, Ja-Ling, Lin, Yu-Tzu, and Yeh, Martin K.-C

Abstract

With the rapid increase of online learning and online degree programs, the need for a secure and fair scoring mechanisms in online learning becomes urgent. In this research, a secure scoring mechanism was designed and developed based on blockchain technology to build transparent and fair interactions among students and teachers. The proposed scoring mechanism was implemented by employing the Ethereum blockchain and its three autonomous smart contracts. The robustness and feasibility of the system was then verified with experiments. The resulting system is shown to be superior to existing online learning systems because it prevents answer tampering. In addition, fairness can be improved with blockchain protocols and a collaborative scoring policy. Lastly, this system helps manage interactions among students and teachers during the process of educational assessment, and encourages all on-chain members to trust the online learning process. These advantages improve peer evaluation and self-directed learning that are essential for a student-centered and collaborative learning environment.

Published
2022

8. Multi-task deep CNN model for no-reference image quality assessment on smartphone camera photos

Author

Huang, Chen-Hsiu and Wu, Ja-Ling

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Multimedia
Abstract

Smartphone is the most successful consumer electronic product in today's mobile social network era. The smartphone camera quality and its image post-processing capability is the dominant factor that impacts consumer's buying decision. However, the quality evaluation of photos taken from smartphones remains a labor-intensive work and relies on professional photographers and experts. As an extension of the prior CNN-based NR-IQA approach, we propose a multi-task deep CNN model with scene type detection as an auxiliary task. With the shared model parameters in the convolution layer, the learned feature maps could become more scene-relevant and enhance the performance. The evaluation result shows improved SROCC performance compared to traditional NR-IQA methods and single task CNN-based models., Comment: Proceedings of Computer Vision & Graphic Image Processing (CVGIP), Hsinchu, Taiwan, Aug. 16-18, 2020

Published
2020

9. JQF: Optimal JPEG Quantization Table Fusion by Simulated Annealing on Texture Images and Predicting Textures

Author

Huang, Chen-Hsiu and Wu, Ja-Ling

Subjects
Computer Science - Multimedia, Electrical Engineering and Systems Science - Image and Video Processing
Abstract

JPEG has been a widely used lossy image compression codec for nearly three decades. The JPEG standard allows to use customized quantization table; however, it's still a challenging problem to find an optimal quantization table within acceptable computational cost. This work tries to solve the dilemma of balancing between computational cost and image specific optimality by introducing a new concept of texture mosaic images. Instead of optimizing a single image or a collection of representative images, the simulated annealing technique is applied to texture mosaic images to search for an optimal quantization table for each texture category. We use pre-trained VGG-16 CNN model to learn those texture features and predict the new image's texture distribution, then fuse optimal texture tables to come out with an image specific optimal quantization table. On the Kodak dataset with the quality setting $Q=95$, our experiment shows a size reduction of 23.5% over the JPEG standard table with a slightly 0.35% FSIM decrease, which is visually unperceivable. The proposed JQF method achieves per image optimality for JPEG encoding with less than one second additional timing cost. The online demo is available at https://matthorn.s3.amazonaws.com/JQF/qtbl_vis.html

Published
2020

10. k-Same-Siamese-GAN: k-Same Algorithm with Generative Adversarial Network for Facial Image De-identification with Hyperparameter Tuning and Mixed Precision Training

Author

Pan, Yi-Lun, Huang, Min-Jhih, Ding, Kuo-Teng, Wu, Ja-Ling, and Jang, Jyh-Shing

Subjects
Computer Science - Computer Vision and Pattern Recognition, Computer Science - Machine Learning, Statistics - Machine Learning
Abstract

For a data holder, such as a hospital or a government entity, who has a privately held collection of personal data, in which the revealing and/or processing of the personal identifiable data is restricted and prohibited by law. Then, "how can we ensure the data holder does conceal the identity of each individual in the imagery of personal data while still preserving certain useful aspects of the data after de-identification?" becomes a challenge issue. In this work, we propose an approach towards high-resolution facial image de-identification, called k-Same-Siamese-GAN, which leverages the k-Same-Anonymity mechanism, the Generative Adversarial Network, and the hyperparameter tuning methods. Moreover, to speed up model training and reduce memory consumption, the mixed precision training technique is also applied to make kSS-GAN provide guarantees regarding privacy protection on close-form identities and be trained much more efficiently as well. Finally, to validate its applicability, the proposed work has been applied to actual datasets - RafD and CelebA for performance testing. Besides protecting privacy of high-resolution facial images, the proposed system is also justified for its ability in automating parameter tuning and breaking through the limitation of the number of adjustable parameters.

Published
2019

18. Reversible Data Hiding for Encrypted Audios by High Order Smoothness

Author

Qiu, Jing-Yong, Lin, Yu-Hsun, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Shi, Yun-Qing, editor, Kim, Hyoung Joong, editor, Pérez-González, Fernando, editor, and Echizen, Isao, editor

Published
2016
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19. Emotion Prediction from User-Generated Videos by Emotion Wheel Guided Deep Learning

Author

Ho, Che-Ting, Lin, Yu-Hsun, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Hirose, Akira, editor, Ozawa, Seiichi, editor, Doya, Kenji, editor, Ikeda, Kazushi, editor, Lee, Minho, editor, and Liu, Derong, editor

Published
2016
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20. Image Descriptor Based Digital Semi-blind Watermarking for DIBR 3D Images

Author

Miao, Hsin, Lin, Yu-Hsun, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Shi, Yun-Qing, editor, Kim, Hyoung Joong, editor, Pérez-González, Fernando, editor, and Yang, Ching-Nung, editor

Published
2015
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21. Secure Client Side Watermarking with Limited Key Size

Author

Sun, Jia-Hao, Lin, Yu-Hsun, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Kobsa, Alfred, Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, He, Xiangjian, editor, Luo, Suhuai, editor, Tao, Dacheng, editor, Xu, Changsheng, editor, Yang, Jie, editor, and Hasan, Muhammad Abul, editor

Published
2015
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24. Semantic Based Background Music Recommendation for Home Videos

Author

Lin, Yin-Tzu, Tsai, Tsung-Hung, Hu, Min-Chun, Cheng, Wen-Huang, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gurrin, Cathal, editor, Hopfgartner, Frank, editor, Hurst, Wolfgang, editor, Johansen, Håvard, editor, Lee, Hyowon, editor, and O’Connor, Noel, editor

Published
2014
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25. TravelBuddy: Interactive Travel Route Recommendation with a Visual Scene Interface

Author

Fu, Cheng-Yao, Hu, Min-Chun, Lai, Jui-Hsin, Wang, Hsuan, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Gurrin, Cathal, editor, Hopfgartner, Frank, editor, Hurst, Wolfgang, editor, Johansen, Håvard, editor, Lee, Hyowon, editor, and O’Connor, Noel, editor

Published
2014
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27. U-Drumwave: An Interactive Performance System for Drumming

Author

Lin, Yin-Tzu, Guan, Shuen-Huei, Yao, Yuan-Chang, Cheng, Wen-Huang, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Schoeffmann, Klaus, editor, Merialdo, Bernard, editor, Hauptmann, Alexander G., editor, Ngo, Chong-Wah, editor, Andreopoulos, Yiannis, editor, and Breiteneder, Christian, editor

Published
2012
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28. Gait-Based Action Recognition via Accelerated Minimum Incremental Coding Length Classifier

Author

Lin, Hung-Wei, Hu, Min-Chun, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Schoeffmann, Klaus, editor, Merialdo, Bernard, editor, Hauptmann, Alexander G., editor, Ngo, Chong-Wah, editor, Andreopoulos, Yiannis, editor, and Breiteneder, Christian, editor

Published
2012
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33. Video-Based Motion Capturing for Skeleton-Based 3D Models

Author

Shih, Liang-Yu, Chen, Bing-Yu, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Wada, Toshikazu, editor, Huang, Fay, editor, and Lin, Stephen, editor

Published
2009
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34. Information Delivery Systems for Car Passengers Without Networking Capabilities

Author

Huang, Chun-Hsiang, Chen, Po-Wei, Hsieh, Ping-Yen, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Doug, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ip, Horace H.-S., editor, Au, Oscar C., editor, Leung, Howard, editor, Sun, Ming-Ting, editor, Ma, Wei-Ying, editor, and Hu, Shi-Min, editor

Published
2007
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35. Film Narrative Exploration Through the Analysis of Aesthetic Elements

Author

Wang, Chia-Wei, Cheng, Wen-Huang, Chen, Jun-Cheng, Yang, Shu-Sian, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Cham, Tat-Jen, editor, Cai, Jianfei, editor, Dorai, Chitra, editor, Rajan, Deepu, editor, Chua, Tat-Seng, editor, and Chia, Liang-Tien, editor

Published
2006
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36. A Colorization Based Animation Broadcast System with Traitor Tracing Capability

Author

Liu, Chih-Chieh, Kuo, Yu-Feng, Huang, Chun-Hsiang, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Shi, Yun Qing, editor, and Jeon, Byeungwoo, editor

Published
2006
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38. Low-Bitrate Video Quality Enhancement by Frame Rate Up-Conversion and Adaptive Frame Encoding

Author

Yang, Ya-Ting, Tung, Yi-Shin, Wu, Ja-Ling, Weng, Chung-Yi, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ho, Yo-Sung, editor, and Kim, Hyoung-Joong, editor

Published
2005
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39. Improvement of Commercial Boundary Detection Using Audiovisual Features

Author

Chen, Jun-Cheng, Yeh, Jen-Hao, Chu, Wei-Ta, Kuo, Jin-Hau, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Ho, Yo-Sung, editor, and Kim, Hyoung Joong, editor

Published
2005
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40. Fidelity-Controlled Robustness Enhancement of Blind Watermarking Schemes Using Evolutionary Computational Techniques

Author

Huang, Chun-Hsiang, Shen, Chih-Hao, Wu, Ja-Ling, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Dough, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, Cox, Ingemar J., editor, Kalker, Ton, editor, and Lee, Heung-Kyu, editor

Published
2005
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41. A Unified Framework Using Spatial Color Descriptor and Motion-Based Post Refinement for Shot Boundary Detection

Author

Chu, Wei-Ta, Cheng, Wen-Huang, He, Sheng-Fang, Wang, Chia-Wei, Wu, Ja-Ling, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Aizawa, Kiyoharu, editor, Nakamura, Yuichi, editor, and Satoh, Shin’ichi, editor

Published
2005
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