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Chuan Sheng Foo

13 accepted papers

2024

3DFG-PIFu: 3D Feature Grids for Human Digitization from Sparse Views

ECCV 2024poster

"Pixel-aligned implicit models, such as Multi-view PIFu, DeepMultiCap, DoubleField, and SeSDF, are well-established methods for reconstructing a clothed human from sparse views. However, given V images, these models would only combine features from these images in a point-wise and localized manner.…

2024

Fine Structure-Aware Sampling: A New Sampling Training Scheme for Pixel-Aligned Implicit Models in Single-View Human Reconstruction

AAAI 2024technical

Pixel-aligned implicit models, such as PIFu, PIFuHD, and ICON, are used for single-view clothed human reconstruction. These models need to be trained using a sampling training scheme. Existing sampling training schemes either fail to capture thin surfaces (e.g. ears, fingers) or cause noisy artefact…

2024

R-Cyclic Diffuser: Reductive and Cyclic Latent Diffusion for 3D Clothed Human Digitalization

CVPR 2024poster

Recently the authors of Zero-1-to-3 demonstrated that a latent diffusion model pretrained with Internet-scale data can not only address the single-view 3D object reconstruction task but can even attain SOTA results in it. However when applied to the task of single-view 3D clothed human reconstructio…

2024

REACTO: Reconstructing Articulated Objects from a Single Video

CVPR 2024poster

In this paper we address the challenge of reconstructing general articulated 3D objects from a single video. Existing works employing dynamic neural radiance fields have advanced the modeling of articulated objects like humans and animals from videos but face challenges with piece-wise rigid general…

2023

FAIR: Fair Collaborative Active Learning with Individual Rationality for Scientific Discovery

AISTATS 2023poster

Scientific discovery aims to find new patterns and test specific hypotheses by analysing large-scale experimental data. However, various practical limitations (e.g., high experimental costs or the inability to perform some experiments) make it challenging for researchers to collect sufficient experi…

Cited by 15SourcePDFScholar
2023

No-regret Sample-efficient Bayesian Optimization for Finding Nash Equilibria with Unknown Utilities

AISTATS 2023poster

The Nash equilibrium (NE) is a classic solution concept for normal-form games that is stable under potential unilateral deviations by self-interested agents. Bayesian optimization (BO) has been used to find NE in continuous general-sum games with unknown costly-to-sample utility functions in a sampl…

Cited by 4SourcePDFScholar
2023

Probably Approximate Shapley Fairness with Applications in Machine Learning

AAAI 2023technical

The Shapley value (SV) is adopted in various scenarios in machine learning (ML), including data valuation, agent valuation, and feature attribution, as it satisfies their fairness requirements. However, as exact SVs are infeasible to compute in practice, SV estimates are approximated instead. This a…

2022

A Minimally Supervised Approach for Medical Image Quality Assessment in Domain Shift Settings

ICASSP 2022accepted

Accurate disease diagnosis requires objective assessment of clinical image quality. Automated image quality assessment (IQA) could enhance screening and diagnosis workflows. However, development of generalizable quality assessment tools requires large labeled clinical image datasets from different s…

Cited by 0SourceScholar
2022

Efficient Distributionally Robust Bayesian Optimization with Worst-case Sensitivity

ICML 2022spotlight

In distributionally robust Bayesian optimization (DRBO), an exact computation of the worst-case expected value requires solving an expensive convex optimization problem. We develop a fast approximation of the worst-case expected value based on the notion of worst-case sensitivity that caters to arbi…

2022

Incentivizing Collaboration in Machine Learning via Synthetic Data Rewards

AAAI 2022technical

This paper presents a novel collaborative generative modeling (CGM) framework that incentivizes collaboration among self-interested parties to contribute data to a pool for training a generative model (e.g., GAN), from which synthetic data are drawn and distributed to the parties as rewards commensu…

2021

Revisiting Superpixels for Active Learning in Semantic Segmentation With Realistic Annotation Costs

CVPR 2021poster

State-of-the-art methods for semantic segmentation are based on deep neural networks that are known to be data-hungry. Region-based active learning has shown to be a promising method for reducing data annotation costs. A key design choice for region-based AL is whether to use regularly-shaped region…

Cited by 75PDFScholar
2019

MaxpoolNMS: Getting Rid of NMS Bottlenecks in Two-Stage Object Detectors

CVPR 2019poster

Modern convolutional object detectors have improved the detection accuracy significantly, which in turn inspired the development of dedicated hardware accelerators to achieve real-time performance by exploiting inherent parallelism in the algorithm. Non-maximum suppression (NMS) is an indispensable…

Cited by 39PDFScholar