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Majed El Helou

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Related publications (26)

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NTIRE 2018 Challenge on Spectral Reconstruction from RGB Images

Lei Zhang, Majed El Helou, Dong Liu, Bing Zhang, Ruofan Zhou, Fayez Lahoud, Marjan Shahpaski

This paper reviews the first challenge on spectral image reconstruction from RGB images, i.e., the recovery of whole-scene hyperspectral (HS) information from a 3- channel RGB image. The challenge was divided into 2 tracks: the “Clean” track sought HS reco ...

2018

Stochastic Frequency Masking to Improve Super-Resolution and Denoising Networks

Sabine Süsstrunk, Majed El Helou, Ruofan Zhou

Super-resolution and denoising are ill-posed yet fundamental image restoration tasks. In blind settings, the degradation kernel or the noise level are unknown. This makes restoration even more challenging, notably for learning-based methods, as they tend t ...

2020

Blind Universal Bayesian Image Denoising with Gaussian Noise Level Learning

Sabine Süsstrunk, Majed El Helou

Blind and universal image denoising consists of a unique model that denoises images with any level of noise. It is especially practical as noise levels do not need to be known when the model is developed or at test time. We propose a theoretically-grounded ...

2019

AIM 2019 Challenge on Image Extreme Super-Resolution: Methods and Results

Liying Lu, Majed El Helou, Ruofan Zhou, Xin Yang

This paper reviews the AIM 2019 challenge on extreme image super-resolution, the problem of restoring of rich details in a low resolution image. Compared to previous, this challenge focuses on an extreme upscaling factor, x16, and employs the novel DIVerse ...

IEEE COMPUTER SOC2019

Drone Shadow Tracking

Sabine Süsstrunk, Majed El Helou, Ruofan Zhou

Aerial videos taken by a drone not too far above the surface may contain the drone's shadow projected on the scene. This deteriorates the aesthetic quality of videos. With the presence of other shadows, shadow removal cannot be directly applied, and the sh ...

2019

Correlation-Based Deblurring Leveraging Multispectral Chromatic Aberration in Color and Near-Infrared Joint Acquisition

Sabine Süsstrunk, Majed El Helou, Zahra Sadeghipoor Kermani

2017