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Deep learning methods are developing rapidly in coded aperture snapshot spectral imaging (CASSI). The number of parameters and FLOPs of existing state-of-the-art methods (SOTA) continues to increase, but the reconstruction accuracy improves…

图像与视频处理 · 电气工程与系统科学 2023-08-04 Zeyu Cai , Chengqian Jin , Feipeng Da

Hyperspectral images (HSIs) have been widely applied in many fields, such as military, agriculture, and environment monitoring. Nevertheless, HSIs commonly suffer from various types of noise during acquisition. Therefore, denoising is…

图像与视频处理 · 电气工程与系统科学 2021-04-07 Yan Gao , Feng Gao , Junyu Dong

Denoising is a crucial step for hyperspectral image (HSI) applications. Though witnessing the great power of deep learning, existing HSI denoising methods suffer from limitations in capturing the non-local self-similarity. Transformers have…

计算机视觉与模式识别 · 计算机科学 2023-04-04 Miaoyu Li , Ji Liu , Ying Fu , Yulun Zhang , Dejing Dou

Hyperspectral image reconstruction from a compressed measurement is a highly ill-posed inverse problem. Current data-driven methods suffer from hallucination due to the lack of spectral diversity in existing hyperspectral image datasets,…

计算机视觉与模式识别 · 计算机科学 2025-11-25 Juan Romero , Qiang Fu , Matteo Ravasi , Wolfgang Heidrich

Snapshot compressed sensing (CS) refers to compressive imaging systems in which multiple frames are mapped into a single measurement frame. Each pixel in the acquired frame is a noisy linear mapping of the corresponding pixels in the frames…

信息论 · 计算机科学 2019-04-30 Shirin Jalali , Xin Yuan

Light rays incident on a transparent object of uniform refractive index undergo deflections, which uniquely characterize the surface geometry of the object. Associated with each point on the surface is a deflection map (or spectrum) which…

计算机视觉与模式识别 · 计算机科学 2015-07-15 Prasad Sudhakar , Laurent Jacques , Xavier Dubois , Philippe Antoine , Luc Joannes

Compressed Sensing MRI reconstructs images of the body's internal anatomy from undersampled measurements, thereby reducing scan time. Recently, deep learning has shown great potential for reconstructing high-fidelity images from highly…

图像与视频处理 · 电气工程与系统科学 2025-04-07 Armeet Singh Jatyani , Jiayun Wang , Aditi Chandrashekar , Zihui Wu , Miguel Liu-Schiaffini , Bahareh Tolooshams , Anima Anandkumar

Synthetic aperture imaging (SAI) is able to achieve the see through effect by blurring out the off-focus foreground occlusions and reconstructing the in-focus occluded targets from multi-view images. However, very dense occlusions and…

计算机视觉与模式识别 · 计算机科学 2021-03-31 Xiang Zhang , Wei Liao , Lei Yu , Wen Yang , Gui-Song Xia

Due to inadequate energy captured by the hyperspectral camera sensor in poor illumination conditions, low-light hyperspectral images (HSIs) usually suffer from low visibility, spectral distortion, and various noises. A range of HSI…

图像与视频处理 · 电气工程与系统科学 2022-10-05 Xuelong Li , Guanlin Li , Bin Zhao

Current self-supervised denoising methods for paired noisy images typically involve mapping one noisy image through the network to the other noisy image. However, after measuring the spectral bias of such methods using our proposed Image…

计算机视觉与模式识别 · 计算机科学 2025-10-02 Wang Zhang , Huaqiu Li , Xiaowan Hu , Tao Jiang , Zikang Chen , Haoqian Wang

Natural signals and images are well-known to be approximately sparse in transform domains such as Wavelets and DCT. This property has been heavily exploited in various applications in image processing and medical imaging. Compressed sensing…

机器学习 · 计算机科学 2015-10-26 Saiprasad Ravishankar , Yoram Bresler

We present RND-SCI, a novel framework for compressive hyperspectral image (HSI) reconstruction. Our framework decomposes the reconstructed object into range-space and null-space components, where the range-space part ensures the solution…

计算机视觉与模式识别 · 计算机科学 2023-05-18 Junyu Wang , Shijie Wang , Ruijie Zhang , Zengqiang Zheng , Wenyu Liu , Xinggang Wang

This paper aims at developing a clustering approach with spectral images directly from CASSI compressive measurements. The proposed clustering method first assumes that compressed measurements lie in the union of multiple low-dimensional…

图像与视频处理 · 电气工程与系统科学 2019-11-06 Jianchen Zhu , Tong Zhang , Shengjie Zhao , Carlos Hinojosa , Zengli Liu , Gonzalo R. Arce

Dual-Camera Compressed Hyperspectral Imaging (DCCHI) offers the capability to reconstruct 3D Hyperspectral Image (HSI) by fusing compressive and Panchromatic (PAN) image, which has shown great potential for snapshot hyperspectral imaging in…

图像与视频处理 · 电气工程与系统科学 2024-06-11 Xin Wang , Lizhi Wang , Xiangtian Ma , Maoqing Zhang , Lin Zhu , Hua Huang

Video snapshot compressive imaging (SCI) aims to capture a sequence of video frames with only a single shot of a 2D detector, whose backbones rest in optical modulation patterns (also known as masks) and a computational reconstruction…

计算机视觉与模式识别 · 计算机科学 2024-04-09 Ping Wang , Lishun Wang , Xin Yuan

Image steganography plays a vital role in securing secret data by embedding it in the cover images. Usually, these images are communicated in a compressed format. Existing techniques achieve this but have low embedding capacity. Enhancing…

多媒体 · 计算机科学 2021-01-05 Rohit Agrawal , Kapil Ahuja

Hyperspectral imaging is an essential imaging modality for a wide range of applications, especially in remote sensing, agriculture, and medicine. Inspired by existing hyperspectral cameras that are either slow, expensive, or bulky,…

计算机视觉与模式识别 · 计算机科学 2022-05-17 Xuanyu Zhang , Yongbing Zhang , Ruiqin Xiong , Qilin Sun , Jian Zhang

Low-light stereo image enhancement (LLSIE) is a relatively new task to enhance the quality of visually unpleasant stereo images captured in dark condition. However, current methods achieve inferior performance on detail recovery and…

计算机视觉与模式识别 · 计算机科学 2022-11-15 Huan Zheng , Zhao Zhang , Jicong Fan , Richang Hong , Yi Yang , Shuicheng Yan

Hyperspectral images (HSIs) often suffer from noise arising from both intra-imaging mechanisms and environmental factors. Leveraging domain knowledge specific to HSIs, such as global spectral correlation (GSC) and non-local spatial…

图像与视频处理 · 电气工程与系统科学 2024-05-14 Guanyiman Fu , Fengchao Xiong , Jianfeng Lu , Jun Zhou , Jiantao Zhou , Yuntao Qian

Hyperspectral image (HSI) denoising is critical for the effective analysis and interpretation of hyperspectral data. However, simultaneously modeling global and local features is rarely explored to enhance HSI denoising. In this letter, we…

图像与视频处理 · 电气工程与系统科学 2024-03-18 Shuai Hu , Feng Gao , Xiaowei Zhou , Junyu Dong , Qian Du