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A color image contains luminance and chrominance components representing the intensity and color information respectively. The objective of the work presented in this paper is to show the significance of incorporating the chrominance…

Computer Vision and Pattern Recognition · Computer Science 2018-01-01 V. Sowmya , D. Govind , K. P. Soman

Ghosting artifacts, motion blur, and low fidelity in highlight are the main challenges in High Dynamic Range (HDR) imaging from multiple Low Dynamic Range (LDR) images. These issues come from using the medium-exposed image as the reference…

Image and Video Processing · Electrical Eng. & Systems 2022-11-07 Wei Li , Shuai Xiao , Tianhong Dai , Shanxin Yuan , Tao Wang , Cheng Li , Fenglong Song

To accelerate deep CNN models, this paper proposes a novel spatially adaptive framework that can dynamically generate pixel-wise sparsity according to the input image. The sparse scheme is pixel-wise refined, regional adaptive under a…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Chen Tang , Wenyu Sun , Zhuqing Yuan , Yongpan Liu

Deep convolutional neural networks perform better on images containing spatially invariant degradations, also known as synthetic degradations; however, their performance is limited on real-degraded photographs and requires multiple-stage…

Computer Vision and Pattern Recognition · Computer Science 2020-10-02 Saeed Anwar , Nick Barnes , Lars Petersson

The Reference-based Super-resolution (RefSR) super-resolves a low-resolution (LR) image given an external high-resolution (HR) reference image, where the reference image and LR image share similar viewpoint but with significant resolution…

Computer Vision and Pattern Recognition · Computer Science 2018-07-30 Haitian Zheng , Mengqi Ji , Haoqian Wang , Yebin Liu , Lu Fang

Image co-segmentation is an active computer vision task that aims to segment the common objects from a set of images. Recently, researchers design various learning-based algorithms to undertake the co-segmentation task. The main difficulty…

Computer Vision and Pattern Recognition · Computer Science 2021-07-07 Chi Zhang , Guankai Li , Guosheng Lin , Qingyao Wu , Rui Yao

Deep learning based methods have achieved remarkable success in image restoration and enhancement, but most such methods rely on RGB input images. These methods fail to take into account the rich spectral distribution of natural images. We…

Image and Video Processing · Electrical Eng. & Systems 2021-02-11 Harsh Sinha , Aditya Mehta , Murari Mandal , Pratik Narang

Image classification is a fundamental application in computer vision. Recently, deeper networks and highly connected networks have shown state of the art performance for image classification tasks. Most datasets these days consist of a…

Computer Vision and Pattern Recognition · Computer Science 2019-02-04 Shreyank N Gowda , Chun Yuan

In this paper we propose a high-order accurate scheme for image segmentation based on the level-set method. In this approach, the curve evolution is described as the 0-level set of a representation function but we modify the velocity that…

Numerical Analysis · Mathematics 2020-01-08 Maurizio Falcone , Giulio Paolucci , Silvia Tozza

Image colourisation is an ill-posed problem, with multiple correct solutions which depend on the context and object instances present in the input datum. Previous approaches attacked the problem either by requiring intense user interactions…

Computer Vision and Pattern Recognition · Computer Science 2021-01-20 Rita Pucci , Christian Micheloni , Niki Martinel

Super-resolution is a fundamental problem in computer vision which aims to overcome the spatial limitation of camera sensors. While significant progress has been made in single image super-resolution, most algorithms only perform well on…

Computer Vision and Pattern Recognition · Computer Science 2021-02-03 Xiangyu Xu , Yongrui Ma , Wenxiu Sun , Ming-Hsuan Yang

This paper proposes a novel method for high-quality image segmentation of both objects and scenes. Inspired by the dilation and erosion operations in morphological image processing techniques, the pixel-level image segmentation problems are…

Computer Vision and Pattern Recognition · Computer Science 2021-12-15 Hao He , Xiangtai Li , Yibo Yang , Guangliang Cheng , Yunhai Tong , Lubin Weng , Zhouchen Lin , Shiming Xiang

Low light images suffer from severe noise, low brightness, low contrast, etc. In previous researches, many image enhancement methods have been proposed, but few methods can deal with these problems simultaneously. In this paper, to solve…

Image and Video Processing · Electrical Eng. & Systems 2020-08-27 Yu Zhang , Xiaoguang Di , Bin Zhang , Ruihang Ji , Chunhui Wang

Recent years have witnessed the unprecedented success of deep convolutional neural networks (CNNs) in single image super-resolution (SISR). However, existing CNN-based SISR methods mostly assume that a low-resolution (LR) image is bicubicly…

Computer Vision and Pattern Recognition · Computer Science 2018-05-25 Kai Zhang , Wangmeng Zuo , Lei Zhang

While the depth of convolutional neural networks has attracted substantial attention in the deep learning research, the width of these networks has recently received greater interest. The width of networks, defined as the size of the…

Computer Vision and Pattern Recognition · Computer Science 2024-06-25 Peng Liu , Xiaoxiao Zhou , Yangjunyi Li , El Basha Mohammad D , Ruogu Fang

Person re-identification (re-ID) tackles the problem of matching person images with the same identity from different cameras. In practical applications, due to the differences in camera performance and distance between cameras and persons…

Computer Vision and Pattern Recognition · Computer Science 2021-11-10 Guoqing Zhang , Yu Ge , Zhicheng Dong , Hao Wang , Yuhui Zheng , Shengyong Chen

Purpose: To systematically investigate the influence of various data consistency layers, (semi-)supervised learning and ensembling strategies, defined in a $\Sigma$-net, for accelerated parallel MR image reconstruction using deep learning.…

Image and Video Processing · Electrical Eng. & Systems 2019-12-20 Kerstin Hammernik , Jo Schlemper , Chen Qin , Jinming Duan , Ronald M. Summers , Daniel Rueckert

We present a simple yet effective self-supervised pre-training method for image harmonization which can leverage large-scale unannotated image datasets. To achieve this goal, we first generate pre-training data online with our…

Computer Vision and Pattern Recognition · Computer Science 2023-04-27 Sheng Liu , Cong Phuoc Huynh , Cong Chen , Maxim Arap , Raffay Hamid

Visual localization is critical to many applications in computer vision and robotics. To address single-image RGB localization, state-of-the-art feature-based methods match local descriptors between a query image and a pre-built 3D model.…

Computer Vision and Pattern Recognition · Computer Science 2020-04-02 Xiaotian Li , Shuzhe Wang , Yi Zhao , Jakob Verbeek , Juho Kannala

High-resolution remote sensing (HRS) semantic segmentation extracts key objects from high-resolution coverage areas. However, objects of the same category within HRS images generally show significant differences in scale and shape across…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Yuxia Chen , Pengcheng Fang , Jianhui Yu , Xiaoling Zhong , Xiaoming Zhang , Tianrui Li