Search Results for author: Chun-Shien Lu

Found 13 papers, 3 papers with code

Generalized Deepfakes Detection with Reconstructed-Blended Images and Multi-scale Feature Reconstruction Network

no code implementations13 Dec 2023 Yuyang Sun, Huy H. Nguyen, Chun-Shien Lu, Zhiyong Zhang, Lu Sun, Isao Echizen

The growing diversity of digital face manipulation techniques has led to an urgent need for a universal and robust detection technology to mitigate the risks posed by malicious forgeries.

Face Swapping

RankMix: Data Augmentation for Weakly Supervised Learning of Classifying Whole Slide Images With Diverse Sizes and Imbalanced Categories

1 code implementation CVPR 2023 Yuan-Chih Chen, Chun-Shien Lu

To our knowledge, the study of weakly supervised learning from the perspective of data augmentation to deal with the WSI classification problem that suffers from lack of training data and imbalance of categories is relatively unexplored.

Data Augmentation Weakly-supervised Learning +1

DPGEN: Differentially Private Generative Energy-Guided Network for Natural Image Synthesis

no code implementations CVPR 2022 Jia-Wei Chen, Chia-Mu Yu, Ching-Chia Kao, Tzai-Wei Pang, Chun-Shien Lu

Despite an increased demand for valuable data, the privacy concerns associated with sensitive datasets present a barrier to data sharing.

Image Generation

Manifold-aware Training: Increase Adversarial Robustness with Feature Clustering

no code implementations1 Jan 2021 Ting-An Yen, Chun-Shien Lu, Pau-Choo Chung

Inspired by the observation from the distribution properties of the features extracted by the CNNs in the feature space and their link to robustness, this work designs a novel training process called Manifold-Aware Training (MAT), which forces CNNs to learn compact features to increase robustness.

Adversarial Robustness Clustering

Automated Graph Generation at Sentence Level for Reading Comprehension Based on Conceptual Graphs

no code implementations COLING 2020 Wan-Hsuan Lin, Chun-Shien Lu

Secondly, we propose a task-agnostic semantics-measured module, which cooperates with the graph representation method, in order to (3) project an edge of a sentence-level graph to the space of semantic relevance with respect to the corresponding concept nodes.

Graph Generation Miscellaneous +6

Deterministic Certification to Adversarial Attacks via Bernstein Polynomial Approximation

no code implementations28 Nov 2020 Ching-Chia Kao, Jhe-Bang Ko, Chun-Shien Lu

Theoretical analyses and experimental results indicate that our method is promising for classifier smoothing and robustness certification.

Data Augmentation

QISTA-Net: DNN Architecture to Solve $\ell_q$-norm Minimization Problem and Image Compressed Sensing

no code implementations22 Oct 2020 Gang-Xuan Lin, Shih-Wei Hu, Chun-Shien Lu

By taking advantage of deep learning in accelerating optimization algorithms, together with the speedup strategy that using the momentum from all previous layers in the network, we propose a learning-based method, called QISTA-Net-s, to solve the sparse signal reconstruction problem.

Image Compressed Sensing

Difference-Seeking Generative Adversarial Network--Unseen Sample Generation

no code implementations ICLR 2020 Yi Lin Sung, Sung-Hsien Hsieh, Soo-Chang Pei, Chun-Shien Lu

Unseen data, which are not samples from the distribution of training data and are difficult to collect, have exhibited importance in numerous applications, ({\em e. g.,} novelty detection, semi-supervised learning, and adversarial training).

Generative Adversarial Network Novelty Detection

Greedy Algorithms for Hybrid Compressed Sensing

1 code implementation18 Aug 2019 Ching-Lun Tai, Sung-Hsien Hsieh, Chun-Shien Lu

Considering the fact that the one-bit CS is optimal for the direction estimation of signals under noise with a fixed bit budget and that the traditional CS is able to provide residue information and estimated signals, we focus on the design of greedy algorithms, which consist of the main steps of support detection and recovered signal update, for the hybrid CS in this paper.

Difference-Seeking Generative Adversarial Network

no code implementations ICLR 2019 Yi-Lin Sung, Sung-Hsien Hsieh, Soo-Chang Pei, Chun-Shien Lu

DSGAN considers the scenario that the training samples of target distribution, $p_{t}$, are difficult to collect.

Generative Adversarial Network

Fast Binary Embedding via Circulant Downsampled Matrix -- A Data-Independent Approach

no code implementations24 Jan 2016 Sung-Hsien Hsieh, Chun-Shien Lu, Soo-Chang Pei

Binary embedding of high-dimensional data aims to produce low-dimensional binary codes while preserving discriminative power.

Fast Template Matching by Subsampled Circulant Matrix

no code implementations16 Sep 2015 Sung-Hsien Hsieh, Chun-Shien Lu, and Soo-Chang Pei

Template matching is widely used for many applications in image and signal processing and usually is time-critical.

Template Matching

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