Search Results for author: Kangfu Mei

Found 20 papers, 11 papers with code

Bigger is not Always Better: Scaling Properties of Latent Diffusion Models

no code implementations1 Apr 2024 Kangfu Mei, Zhengzhong Tu, Mauricio Delbracio, Hossein Talebi, Vishal M. Patel, Peyman Milanfar

We study the scaling properties of latent diffusion models (LDMs) with an emphasis on their sampling efficiency.

Latent Feature-Guided Diffusion Models for Shadow Removal

no code implementations4 Dec 2023 Kangfu Mei, Luis Figueroa, Zhe Lin, Zhihong Ding, Scott Cohen, Vishal M. Patel

Recovering textures under shadows has remained a challenging problem due to the difficulty of inferring shadow-free scenes from shadow images.

Shadow Removal

CoDi: Conditional Diffusion Distillation for Higher-Fidelity and Faster Image Generation

1 code implementation2 Oct 2023 Kangfu Mei, Mauricio Delbracio, Hossein Talebi, Zhengzhong Tu, Vishal M. Patel, Peyman Milanfar

Our conditional-task learning and distillation approach outperforms previous distillation methods, achieving a new state-of-the-art in producing high-quality images with very few steps (e. g., 1-4) across multiple tasks, including super-resolution, text-guided image editing, and depth-to-image generation.

Image Enhancement Super-Resolution +1

T1: Scaling Diffusion Probabilistic Fields to High-Resolution on Unified Visual Modalities

no code implementations24 May 2023 Kangfu Mei, Mo Zhou, Vishal M. Patel

The model can be scaled to generate high-resolution data while unifying multiple modalities.

Bi-Noising Diffusion: Towards Conditional Diffusion Models with Generative Restoration Priors

no code implementations14 Dec 2022 Kangfu Mei, Nithin Gopalakrishnan Nair, Vishal M. Patel

The improvements obtained by our method suggest that the priors can be incorporated as a general plugin for improving conditional diffusion models.

Colorization Rain Removal +1

VIDM: Video Implicit Diffusion Models

1 code implementation1 Dec 2022 Kangfu Mei, Vishal M. Patel

Diffusion models have emerged as a powerful generative method for synthesizing high-quality and diverse set of images.

Generative Adversarial Network Video Generation

AT-DDPM: Restoring Faces degraded by Atmospheric Turbulence using Denoising Diffusion Probabilistic Models

1 code implementation24 Aug 2022 Nithin Gopalakrishnan Nair, Kangfu Mei, Vishal M. Patel

In recent years, various deep learning-based single image atmospheric turbulence mitigation methods, including CNN-based and GAN inversion-based, have been proposed in the literature which attempt to remove the distortion in the image.

Image Restoration Image Super-Resolution +1

Deep Semantic Statistics Matching (D2SM) Denoising Network

1 code implementation19 Jul 2022 Kangfu Mei, Vishal M. Patel, Rui Huang

The ultimate aim of image restoration like denoising is to find an exact correlation between the noisy and clear image domains.

Denoising Image Restoration +2

A comparison of different atmospheric turbulence simulation methods for image restoration

no code implementations19 Apr 2022 Nithin Gopalakrishnan Nair, Kangfu Mei, Vishal M. Patel

In this paper, we systematically evaluate the effectiveness of various turbulence simulation methods on image restoration.

Face Recognition Image Restoration

Thermal to Visible Image Synthesis under Atmospheric Turbulence

no code implementations6 Apr 2022 Kangfu Mei, Yiqun Mei, Vishal M. Patel

In this paper, we first investigate the problem with a turbulence simulation method on real-world thermal images.

Face Verification Image Generation +1

LTT-GAN: Looking Through Turbulence by Inverting GANs

no code implementations4 Dec 2021 Kangfu Mei, Vishal M. Patel

To mitigate the turbulence effect, in this paper, we propose the first turbulence mitigation method that makes use of visual priors encapsulated by a well-trained GAN.

Face Verification

SDAN: Squared Deformable Alignment Network for Learning Misaligned Optical Zoom

1 code implementation2 Apr 2021 Kangfu Mei, Shenglong Ye, Rui Huang

Deep Neural Network (DNN) based super-resolution algorithms have greatly improved the quality of the generated images.

Computational Efficiency Super-Resolution

AttaNet: Attention-Augmented Network for Fast and Accurate Scene Parsing

1 code implementation10 Mar 2021 Qi Song, Kangfu Mei, Rui Huang

In this paper, we propose a new model, called Attention-Augmented Network (AttaNet), to capture both global context and multilevel semantics while keeping the efficiency high.

Scene Parsing Segmentation +1

Scale-Aware Network with Regional and Semantic Attentions for Crowd Counting under Cluttered Background

no code implementations5 Jan 2021 Qiaosi Yi, Yunxing Liu, Aiwen Jiang, Juncheng Li, Kangfu Mei, Mingwen Wang

Although the emergence of deep learning has greatly promoted the development of this field, crowd counting under cluttered background is still a serious challenge.

Crowd Counting Density Estimation

MDCN: Multi-scale Dense Cross Network for Image Super-Resolution

1 code implementation30 Aug 2020 Juncheng Li, Faming Fang, Jiaqian Li, Kangfu Mei, Guixu Zhang

Among them, MDCB aims to detect multi-scale features and maximize the use of image features flow at different scales, HFDB focuses on adaptively recalibrate channel-wise feature responses to achieve feature distillation, and DRB attempts to reconstruct SR images with different upsampling factors in a single model.

Dynamic Reconstruction Image Super-Resolution

Disentangle Perceptual Learning through Online Contrastive Learning

no code implementations24 Jun 2020 Kangfu Mei, Yao Lu, Qiaosi Yi, Hao-Yu Wu, Juncheng Li, Rui Huang

Perceptual learning approaches like perceptual loss are empirically powerful for such tasks but they usually rely on the pre-trained classification network to provide features, which are not necessarily optimal in terms of visual perception of image transformation.

Contrastive Learning feature selection

HighEr-Resolution Network for Image Demosaicing and Enhancing

1 code implementation19 Nov 2019 Kangfu Mei, Juncheng Li, Jiajie Zhang, Hao-Yu Wu, Jie Li, Rui Huang

However, plenty of studies have shown that global information is crucial for image restoration tasks like image demosaicing and enhancing.

Demosaicking

Progressive Feature Fusion Network for Realistic Image Dehazing

1 code implementation4 Oct 2018 Kangfu Mei, Aiwen Jiang, Juncheng Li, Mingwen Wang

Most of them follow a classic atmospheric scattering model which is an elegant simplified physical model based on the assumption of single-scattering and homogeneous atmospheric medium.

4k Image Dehazing +1

An Effective Single-Image Super-Resolution Model Using Squeeze-and-Excitation Networks

1 code implementation3 Oct 2018 Kangfu Mei, Aiwen Jiang, Juncheng Li, Jihua Ye, Mingwen Wang

Recent works on single-image super-resolution are concentrated on improving performance through enhancing spatial encoding between convolutional layers.

Image Super-Resolution

Multi-scale Residual Network for Image Super-Resolution

1 code implementation ECCV 2018 Juncheng Li, Faming Fang, Kangfu Mei, Guixu Zhang

Meanwhile, we let these features interact with each other to get the most efficacious image information, we call this structure Multi-scale Residual Block (MSRB).

Image Super-Resolution

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