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Deep convolutional neural networks (DCNNs) have recently demonstrated high-quality results in single-image super-resolution (SR). DCNNs often suffer from over-parametrization and large amounts of redundancy, which results in inefficient…

计算机视觉与模式识别 · 计算机科学 2018-12-18 Yinglan Ma , Hongyu Xiong , Zhe Hu , Lizhuang Ma

Recently, most of state-of-the-art single image super-resolution (SISR) methods have attained impressive performance by using deep convolutional neural networks (DCNNs). The existing SR methods have limited performance due to a fixed…

图像与视频处理 · 电气工程与系统科学 2021-07-08 Rao Muhammad Umer , Asad Munir , Christian Micheloni

In this paper, we empirically study the optimization dynamics of multi-task learning, particularly focusing on those that govern a collection of tasks with significant data imbalance. We present a simple yet effective method of pre-training…

Blind super-resolution (SR) aims to recover high-quality visual textures from a low-resolution (LR) image, which is usually degraded by down-sampling blur kernels and additive noises. This task is extremely difficult due to the challenges…

计算机视觉与模式识别 · 计算机科学 2022-07-05 Fuzhi Yang , Huan Yang , Yanhong Zeng , Jianlong Fu , Hongtao Lu

Most current super-resolution methods rely on low and high resolution image pairs to train a network in a fully supervised manner. However, such image pairs are not available in real-world applications. Instead of directly addressing this…

图像与视频处理 · 电气工程与系统科学 2019-09-23 Andreas Lugmayr , Martin Danelljan , Radu Timofte

Existing methods for single image super-resolution (SR) are typically evaluated with synthetic degradation models such as bicubic or Gaussian downsampling. In this paper, we investigate SR from the perspective of camera lenses, named as…

计算机视觉与模式识别 · 计算机科学 2019-04-09 Chang Chen , Zhiwei Xiong , Xinmei Tian , Zheng-Jun Zha , Feng Wu

Recognizing new objects by learning from a few labeled examples in an evolving environment is crucial to obtain excellent generalization ability for real-world machine learning systems. A typical setting across current meta learning…

机器学习 · 计算机科学 2021-09-30 Zhenyi Wang , Tiehang Duan , Le Fang , Qiuling Suo , Mingchen Gao

In machine learning based single image super-resolution, the degradation model is embedded in training data generation. However, most existing satellite image super-resolution methods use a simple down-sampling model with a fixed kernel to…

计算机视觉与模式识别 · 计算机科学 2020-02-27 Xiang Zhu , Hossein Talebi , Xinwei Shi , Feng Yang , Peyman Milanfar

In industrial recommendation systems, multi-task learning (learning multiple tasks simultaneously on a single model) is a predominant approach to save training/serving resources and improve recommendation performance via knowledge transfer…

In the tasks of image aesthetic quality evaluation, it is difficult to reach both the high score area and low score area due to the normal distribution of aesthetic datasets. To reduce the error in labeling and solve the problem of normal…

计算机视觉与模式识别 · 计算机科学 2022-01-11 Xin Jin , Hao Lou , Huang Heng , Xiaodong Li , Shuai Cui , Xiaokun Zhang , Xiqiao Li

Multi-task learning (MTL) considers learning a joint model for multiple tasks by optimizing a convex combination of all task losses. To solve the optimization problem, existing methods use an adaptive weight updating scheme, where task…

机器学习 · 计算机科学 2024-07-22 Yifei He , Shiji Zhou , Guojun Zhang , Hyokun Yun , Yi Xu , Belinda Zeng , Trishul Chilimbi , Han Zhao

Imbalanced data pose challenges for deep learning based classification models. One of the most widely-used approaches for tackling imbalanced data is re-weighting, where training samples are associated with different weights in the loss…

机器学习 · 计算机科学 2022-08-08 Dandan Guo , Zhuo Li , Meixi Zheng , He Zhao , Mingyuan Zhou , Hongyuan Zha

Meta-learning methods aim to build learning algorithms capable of quickly adapting to new tasks in low-data regime. One of the most difficult benchmarks of such algorithms is a one-shot learning problem. In this setting many algorithms face…

机器学习 · 计算机科学 2022-10-04 Andrei Boiarov , Kostiantyn Khabarlak , Igor Yastrebov

Multi-task learning has been observed by many researchers, which supposes that different tasks can share a low-rank common yet latent subspace. It means learning multiple tasks jointly is better than learning them independently. In this…

机器学习 · 计算机科学 2021-12-10 Wei Chang , Feiping Nie , Rong Wang , Xuelong Li

Despite extensive research spanning several decades, class imbalance is still considered a profound difficulty for both machine learning and deep learning models. While data oversampling is the foremost technique to address this issue,…

机器学习 · 计算机科学 2025-02-12 Sukumar Kishanthan , Asela Hevapathige

Recent image degradation estimation methods have enabled single-image super-resolution (SR) approaches to better upsample real-world images. Among these methods, explicit kernel estimation approaches have demonstrated unprecedented…

计算机视觉与模式识别 · 计算机科学 2023-11-01 Royson Lee , Rui Li , Stylianos I. Venieris , Timothy Hospedales , Ferenc Huszár , Nicholas D. Lane

While deep learning and deep reinforcement learning (RL) systems have demonstrated impressive results in domains such as image classification, game playing, and robotic control, data efficiency remains a major challenge. Multi-task learning…

机器学习 · 计算机科学 2020-12-23 Tianhe Yu , Saurabh Kumar , Abhishek Gupta , Sergey Levine , Karol Hausman , Chelsea Finn

Target imbalance affects the performance of recent deep learning methods in many medical image segmentation tasks. It is a twofold problem: class imbalance - positive class (lesion) size compared to negative class (non-lesion) size; lesion…

图像与视频处理 · 电气工程与系统科学 2020-07-21 Boris Shirokikh , Alexey Shevtsov , Anvar Kurmukov , Alexandra Dalechina , Egor Krivov , Valery Kostjuchenko , Andrey Golanov , Mikhail Belyaev

Video super-resolution (VSR) techniques, especially deep-learning-based algorithms, have drastically improved over the last few years and shown impressive performance on synthetic data. However, their performance on real-world video data…

图像与视频处理 · 电气工程与系统科学 2023-05-05 Mehran Jeelani , Sadbhawna , Noshaba Cheema , Klaus Illgner-Fehns , Philipp Slusallek , Sunil Jaiswal

This paper addresses the problem of super-resolution: constructing a highly resolved (HR) image from a low resolved (LR) one. Recent unsupervised approaches search the latent space of a StyleGAN pre-trained on HR images, for the image that…

计算机视觉与模式识别 · 计算机科学 2023-11-29 Marzieh Gheisari , Auguste Genovesio