Search Results for author: Xiaohao Cai

Found 15 papers, 3 papers with code

Non-negative Subspace Feature Representation for Few-shot Learning in Medical Imaging

no code implementations3 Apr 2024 Keqiang Fan, Xiaohao Cai, Mahesan Niranjan

Extensive empirical studies are conducted in terms of validating the effectiveness of NMF, especially its supervised variants (e. g., discriminative NMF, and supervised and constrained NMF with sparseness), and the comparison with principal component analysis (PCA), i. e., the collaborative representation-based dimensionality reduction technique derived from eigenvectors.

Attribute Dimensionality Reduction +4

Thinking Outside the Box: Orthogonal Approach to Equalizing Protected Attributes

no code implementations21 Nov 2023 Jiahui Liu, Xiaohao Cai, Mahesan Niranjan

There is growing concern that the potential of black box AI may exacerbate health-related disparities and biases such as gender and ethnicity in clinical decision-making.

Attribute Decision Making +1

IIHT: Medical Report Generation with Image-to-Indicator Hierarchical Transformer

no code implementations10 Aug 2023 Keqiang Fan, Xiaohao Cai, Mahesan Niranjan

The classifier module first extracts image features from the input medical images and produces disease-related indicators with their corresponding states.

Image Captioning Machine Translation +1

Proximal nested sampling with data-driven priors for physical scientists

1 code implementation30 Jun 2023 Jason D. McEwen, Tobías I. Liaudat, Matthew A. Price, Xiaohao Cai, Marcelo Pereyra

Proximal nested sampling was introduced recently to open up Bayesian model selection for high-dimensional problems such as computational imaging.

Model Selection

Semantic Segmentation by Semantic Proportions

no code implementations24 May 2023 Halil Ibrahim Aysel, Xiaohao Cai, Adam Prügel-Bennett

Utilising semantic proportions suggested in this work offers a promising direction for future research in the field of semantic segmentation.

Autonomous Driving Segmentation +1

GO-LDA: Generalised Optimal Linear Discriminant Analysis

no code implementations23 May 2023 Jiahui Liu, Xiaohao Cai, Mahesan Niranjan

Linear discriminant analysis (LDA) has been a useful tool in pattern recognition and data analysis research and practice.

3D Orientation Field Transform

1 code implementation4 Oct 2020 Wai-Tsun Yeung, Xiaohao Cai, Zizhen Liang, Byung-Ho Kang

It, however, has no counterpart in three-dimensional (3D) images due to the extremely complicated orientation in 3D compared to 2D.

Linkage between piecewise constant Mumford-Shah model and ROF model and its virtue in image segmentation

no code implementations26 Jul 2018 Xiaohao Cai, Raymond Chan, Carola-Bibiane Schonlieb, Gabriele Steidl, Tieyong Zeng

The piecewise constant Mumford-Shah (PCMS) model and the Rudin-Osher-Fatemi (ROF) model are two important variational models in image segmentation and image restoration, respectively.

Image Restoration Image Segmentation +3

A graph cut approach to 3D tree delineation, using integrated airborne LiDAR and hyperspectral imagery

no code implementations24 Jan 2017 Juheon Lee, David Coomes, Carola-Bibiane Schonlieb, Xiaohao Cai, Jan Lellmann, Michele Dalponte, Yadvinder Malhi, Nathalie Butt, Mike Morecroft

Here we develop a 3D tree delineation method which uses graph cut to delineate trees from the full 3D LiDAR point cloud, and also makes use of any optical imagery available (hyperspectral imagery in our case).

Computational Efficiency Management

Wavelet-Based Segmentation on the Sphere

no code implementations21 Sep 2016 Xiaohao Cai, Christopher G. R. Wallis, Jennifer Y. H. Chan, Jason D. McEwen

Wavelets on the sphere have been developed to solve such problems for data defined on the sphere, which arise in numerous fields such as cosmology and geophysics.

Geophysics Image Restoration +2

A Three-stage Approach for Segmenting Degraded Color Images: Smoothing, Lifting and Thresholding (SLaT)

no code implementations30 May 2015 Xiaohao Cai, Raymond Chan, Mila Nikolova, Tieyong Zeng

In this paper, we propose a SLaT (Smoothing, Lifting and Thresholding) method with three stages for multiphase segmentation of color images corrupted by different degradations: noise, information loss, and blur.

Segmentation

Variational Image Segmentation Model Coupled with Image Restoration Achievements

no code implementations9 May 2014 Xiaohao Cai

Image segmentation and image restoration are two important topics in image processing with great achievements.

Image Restoration Image Segmentation +2

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