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Yujia Liu

11 accepted papers

2024

Defense Against Adversarial Attacks on No-Reference Image Quality Models with Gradient Norm Regularization

CVPR 2024poster

The task of No-Reference Image Quality Assessment (NR-IQA) is to estimate the quality score of an input image without additional information. NR-IQA models play a crucial role in the media industry aiding in performance evaluation and optimization guidance. However these models are found to be vulne…

2024

Enhancing Adversarial Robustness in SNNs with Sparse Gradients

ICML 2024poster

Spiking Neural Networks (SNNs) have attracted great attention for their energy-efficient operations and biologically inspired structures, offering potential advantages over Artificial Neural Networks (ANNs) in terms of energy efficiency and interpretability. Nonetheless, similar to ANNs, the robustn…

Cited by 2SourcePDFScholar
2024

LM-HT SNN: Enhancing the Performance of SNN to ANN Counterpart through Learnable Multi-hierarchical Threshold Model

NeurIPS 2024poster

Compared to traditional Artificial Neural Network (ANN), Spiking Neural Network (SNN) has garnered widespread academic interest for its intrinsic ability to transmit information in a more energy-efficient manner. However, despite previous efforts to optimize the learning algorithm of SNNs through va…

2024

Point2CAD: Reverse Engineering CAD Models from 3D Point Clouds

CVPR 2024highlight

Computer-Aided Design (CAD) model reconstruction from point clouds is an important problem at the intersection of computer vision graphics and machine learning; it saves the designer significant time when iterating on in-the-wild objects. Recent advancements in this direction achieve relatively reli…

2024

Towards HDR and HFR Video from Rolling-Mixed-Bit Spikings

CVPR 2024poster

The spiking cameras offer the benefits of high dynamic range (HDR) high temporal resolution and low data redundancy. However reconstructing HDR videos in high-speed conditions using single-bit spikings presents challenges due to the limited bit depth. Increasing the bit depth of the spikings is adva…

Cited by 3SourcePDFScholar
2021

PC2WF: 3D Wireframe Reconstruction from Raw Point Clouds

ICLR 2021poster

We introduce PC2WF, the first end-to-end trainable deep network architecture to convert a 3D point cloud into a wireframe model. The network takes as input an unordered set of 3D points sampled from the surface of some object, and outputs a wireframe of that object, i.e., a sparse set of corner poin…

Cited by 49SourcePDFScholar
2019

Detection Based Defense Against Adversarial Examples From the Steganalysis Point of View

CVPR 2019poster

Deep Neural Networks (DNNs) have recently led to significant improvements in many fields. However, DNNs are vulnerable to adversarial examples which are samples with imperceptible perturbations while dramatically misleading the DNNs. Moreover, adversarial examples can be used to perform an attack on…

Cited by 141PDFScholar