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Synthesizing a densely sampled light field from a single image is highly beneficial for many applications. The conventional method reconstructs a depth map and relies on physical-based rendering and a secondary network to improve the…

计算机视觉与模式识别 · 计算机科学 2019-04-01 Andre Ivan , Williem , In Kyu Park

Recent years have witnessed the great advances of deep neural networks (DNNs) in light field (LF) image super-resolution (SR). However, existing DNN-based LF image SR methods are developed on a single fixed degradation (e.g., bicubic…

计算机视觉与模式识别 · 计算机科学 2023-12-01 Yingqian Wang , Zhengyu Liang , Longguang Wang , Jungang Yang , Wei An , Yulan Guo

When an attacker wants to falsify an image, in most of cases she/he will perform a JPEG recompression. Different techniques have been developed based on diverse theoretical assumptions but very effective solutions have not been developed…

多媒体 · 计算机科学 2017-06-07 Irene Amerini , Tiberio Uricchio , Lamberto Ballan , Roberto Caldelli

The emerging Learned Compression (LC) replaces the traditional codec modules with Deep Neural Networks (DNN), which are trained end-to-end for rate-distortion performance. This approach is considered as the future of image/video…

图像与视频处理 · 电气工程与系统科学 2024-07-08 Farhad Pakdaman , Moncef Gabbouj

Learning-based image compression was shown to achieve a competitive performance with state-of-the-art transform-based codecs. This motivated the development of new learning-based visual compression standards such as JPEG-AI. Of particular…

计算机视觉与模式识别 · 计算机科学 2023-07-27 Yingpeng Deng , Lina J. Karam

In this paper, we propose a learned video codec with a residual prediction network (RP-Net) and a feature-aided loop filter (LF-Net). For the RP-Net, we exploit the residual of previous multiple frames to further eliminate the redundancy of…

图像与视频处理 · 电气工程与系统科学 2021-08-20 Chao Liu , Heming Sun , Jiro Katto , Xiaoyang Zeng , Yibo Fan

Low-Light Image Enhancement (LLIE) has advanced with the surge in phone photography demand, yet many existing methods neglect compression, a crucial concern for resource-constrained phone photography. Most LLIE methods overlook this,…

计算机视觉与模式识别 · 计算机科学 2024-07-11 Wei Wang , Zhi Jin

Restoring a sharp light field image from its blurry input has become essential due to the increasing popularity of parallax-based image processing. State-of-the-art blind light field deblurring methods suffer from several issues such as…

计算机视觉与模式识别 · 计算机科学 2019-12-06 Jonathan Samuel Lumentut , Tae Hyun Kim , Ravi Ramamoorthi , In Kyu Park

The hardware challenges associated with light-field(LF) imaging has made it difficult for consumers to access its benefits like applications in post-capture focus and aperture control. Learning-based techniques which solve the ill-posed…

图像与视频处理 · 电气工程与系统科学 2022-07-22 Shrisudhan Govindarajan , Prasan Shedligeri , Sarah , Kaushik Mitra

Recent advances in deep learning have led to superhuman performance across a variety of applications. Recently, these methods have been successfully employed to improve the rate-distortion performance in the task of image compression.…

图像与视频处理 · 电气工程与系统科学 2022-02-01 Ankur Mali , Alexander Ororbia , Daniel Kifer , Lee Giles

Learned image compression has achieved extraordinary rate-distortion performance in PSNR and MS-SSIM compared to traditional methods. However, it suffers from intensive computation, which is intolerable for real-world applications and leads…

图像与视频处理 · 电气工程与系统科学 2022-08-01 Hongjiu Yu , Qiancheng Sun , Jin Hu , Xingyuan Xue , Jixiang Luo , Dailan He , Yilong Li , Pengbo Wang , Yuanyuan Wang , Yaxu Dai , Yan Wang , Hongwei Qin

Although it is traditionally believed that lossy image compression, such as JPEG compression, has a negative impact on the performance of deep neural networks (DNNs), it is shown by recent works that well-crafted JPEG compression can…

计算机视觉与模式识别 · 计算机科学 2025-03-24 Ahmed H. Salamah , Kaixiang Zheng , Yiwen Liu , En-Hui Yang

JPEG is one of the most popular image compression methods. It is beneficial to compress those existing JPEG files without introducing additional distortion. In this paper, we propose a deep learning based method to further compress JPEG…

图像与视频处理 · 电气工程与系统科学 2023-08-28 Lina Guo , Yuanyuan Wang , Tongda Xu , Jixiang Luo , Dailan He , Zhenjun Ji , Shanshan Wang , Yang Wang , Hongwei Qin

This paper shows that it is possible to train large and deep convolutional neural networks (CNN) for JPEG compression artifacts reduction, and that such networks can provide significantly better reconstruction quality compared to previously…

计算机视觉与模式识别 · 计算机科学 2016-05-03 Pavel Svoboda , Michal Hradis , David Barina , Pavel Zemcik

Latency-critical computer vision systems, such as autonomous driving or drone control, require fast image or video compression when offloading neural network inference to a remote computer. To ensure low latency on a near-sensor edge…

计算机视觉与模式识别 · 计算机科学 2022-11-24 Jakub Žádník , Markku Mäkitalo , Pekka Jääskeläinen

JPEG is one of the most commonly used standards among lossy image compression methods. However, JPEG compression inevitably introduces various kinds of artifacts, especially at high compression rates, which could greatly affect the Quality…

计算机视觉与模式识别 · 计算机科学 2018-06-12 Xiaoshuai Zhang , Wenhan Yang , Yueyu Hu , Jiaying Liu

Light-field microscopy represents a promising solution for microscopic volumetric imaging, thanks to its capability to encode information on multiple planes in a single acquisition. This is achieved through its peculiar simultaneous capture…

The quality assessment of light field images presents new challenges to conventional compression methods, as the spatial quality is affected by the optical distortion of capturing devices, and the angular consistency affects the performance…

多媒体 · 计算机科学 2018-08-03 Bichuan Guo , Jiangtao Wen , Yuxing Han

We present a lossy image compression method based on deep convolutional neural networks (CNNs), which outperforms the existing BPG, WebP, JPEG2000 and JPEG as measured via multi-scale structural similarity (MS-SSIM), at the same bit rate.…

图像与视频处理 · 电气工程与系统科学 2018-06-06 Haojie Liu , Tong Chen , Qiu Shen , Tao Yue , Zhan Ma

Consumer light-field (LF) cameras suffer from a low or limited resolution because of the angular-spatial trade-off. To alleviate this drawback, we propose a novel learning-based approach utilizing attention mechanism to synthesize novel…

图像与视频处理 · 电气工程与系统科学 2021-06-01 M. Shahzeb Khan Gul , Umair Mukati , Michel Bätz , Søren Forchhammer , Joachim Keinert