大多数现有的基于深度学习的单图像动态场景盲目脱毛(SIDSBD)方法通常设计深网络,以直接从一个输入的运动模糊图像中直接删除空间变化的运动模糊,而无需模糊的内核估计。在本文中,受投射运动路径模糊(PMPB)模型和可变形卷积的启发,我们提出了一个新颖的约束可变形的卷积网络(CDCN),以进行有效的单图像动态场景,同时实现了准确的空间变化,以及仅观察到的运动模糊图像的高质量图像恢复。在我们提出的CDCN中,我们首先构建了一种新型的多尺度多级多输入多输出(MSML-MIMO)编码器架构,以提高功能提取能力。其次,与使用多个连续帧的DLVBD方法不同,提出了一种新颖的约束可变形卷积重塑(CDCR)策略,其中首先将可变形的卷积应用于输入的单运动模糊图像的模糊特征,用于学习学习的抽样点,以学习学习的采样点每个像素的运动模糊内核类似于PMPB模型中摄像机震动的运动密度函数的估计,然后提出了一种基于PMPB的新型重塑损耗函数来限制学习的采样点收敛,这可以使得可以使得可以使其产生。学习的采样点与每个像素的相对运动轨迹匹配,并促进空间变化的运动模糊内核估计的准确性。
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使用注意机制的深度卷积神经网络(CNN)在动态场景中取得了巨大的成功。在大多数这些网络中,只能通过注意图精炼的功能传递到下一层,并且不同层的注意力图彼此分开,这并不能充分利用来自CNN中不同层的注意信息。为了解决这个问题,我们引入了一种新的连续跨层注意传播(CCLAT)机制,该机制可以利用所有卷积层的分层注意信息。基于CCLAT机制,我们使用非常简单的注意模块来构建一个新型残留的密集注意融合块(RDAFB)。在RDAFB中,从上述RDAFB的输出中推断出的注意图和每一层直接连接到后续的映射,从而导致CRLAT机制。以RDAFB为基础,我们为动态场景Deblurring设计了一个名为RDAFNET的有效体系结构。基准数据集上的实验表明,所提出的模型的表现优于最先进的脱毛方法,并证明了CCLAT机制的有效性。源代码可在以下网址提供:https://github.com/xjmz6/rdafnet。
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由于空间和时间变化的模糊,视频脱毛是一个高度不足的问题。视频脱毛的直观方法包括两个步骤:a)检测当前框架中的模糊区域; b)利用来自相邻帧中清晰区域的信息,以使当前框架脱毛。为了实现这一过程,我们的想法是检测每个帧的像素模糊级别,并将其与视频Deblurring结合使用。为此,我们提出了一个新颖的框架,该框架利用了先验运动级(MMP)作为有效的深视频脱张的指南。具体而言,由于在曝光时间内沿其轨迹的像素运动与运动模糊水平呈正相关,因此我们首先使用高频尖锐框架的光流量的平均幅度来生成合成模糊框架及其相应的像素 - 像素 - 明智的运动幅度地图。然后,我们构建一个数据集,包括模糊框架和MMP对。然后,由紧凑的CNN通过回归来学习MMP。 MMP包括空间和时间模糊级别的信息,可以将其进一步集成到视频脱毛的有效复发性神经网络(RNN)中。我们进行密集的实验,以验证公共数据集中提出的方法的有效性。
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视频脱毛方法的关键成功因素是用相邻视频帧的尖锐像素来补偿中框的模糊像素。因此,主流方法根据估计的光流对齐相邻帧并融合对齐帧进行恢复。但是,这些方法有时会产生不令人满意的结果,因为它们很少考虑像素的模糊水平,这可能会引入视频帧中的模糊像素。实际上,并非视频框架中的所有像素都对脱毛都是敏锐的和有益的。为了解决这个问题,我们提出了用于视频Delurring的时空变形注意网络(STDANET),该网络通过考虑视频帧的像素模糊级别来提取尖锐像素的信息。具体而言,stdanet是一个编码器 - 码头网络,结合了运动估计器和时空变形注意(STDA)模块,其中运动估计器预测了粗略光流,这些流量被用作基本偏移,以在STDA模块中找到相应的尖锐像素。实验结果表明,所提出的Stdanet对GOPRO,DVD和BSD数据集的最新方法表现出色。
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的状态的最先进的视频去模糊方法的成功主要源于潜伏视频恢复相邻帧之间的对准隐式或显式的估计。然而,由于模糊效果的影响,估计从所述模糊的相邻帧的对准信息是不是一个简单的任务。不准确的估计将干扰随后的帧的恢复。相反,估计比对信息,我们提出了一个简单而有效的深层递归神经网络与多尺度双向传播(RNN-MBP),有效传播和收集未对齐的相邻帧的信息,更好的视频去模糊。具体来说,我们建立与这可以通过在不同的尺度整合他们直接利用从非对齐相邻隐藏状态帧间信息的两个U形网RNN细胞多尺度双向传播〜(MBP)模块。此外,为了更好地评估算法和国家的最先进的存在于现实世界的模糊场景的方法,我们也通过一个精心设计的数字视频采集系统创建一个真实世界的模糊视频数据集(RBVD)(的DVA)并把它作为训练和评估数据集。大量的实验结果表明,该RBVD数据集有效地提高了对现实世界的模糊的视频现有算法的性能,并且算法进行从优对三个典型基准的国家的最先进的方法。该代码可在https://github.com/XJTU-CVLAB-LOWLEVEL/RNN-MBP。
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在各种基于学习的图像恢复任务(例如图像降解和图像超分辨率)中,降解表示形式被广泛用于建模降解过程并处理复杂的降解模式。但是,在基于学习的图像deblurring中,它们的探索程度较低,因为在现实世界中挑战性的情况下,模糊内核估计不能很好地表现。我们认为,对于图像降低的降解表示形式是特别必要的,因为模糊模式通常显示出比噪声模式或高频纹理更大的变化。在本文中,我们提出了一个框架来学习模糊图像的空间自适应降解表示。提出了一种新颖的联合图像re毁和脱蓝色的学习过程,以提高降解表示的表现力。为了使学习的降解表示有效地启动和降解,我们提出了一个多尺度退化注入网络(MSDI-NET),以将它们集成到神经网络中。通过集成,MSDI-NET可以适应各种复杂的模糊模式。 GoPro和Realblur数据集上的实验表明,我们提出的具有学识渊博的退化表示形式的Deblurring框架优于最先进的方法,具有吸引人的改进。该代码在https://github.com/dasongli1/learning_degradation上发布。
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在本文中,我们考虑了Defocus图像去缩合中的问题。以前的经典方法遵循两步方法,即首次散焦映射估计,然后是非盲目脱毛。在深度学习时代,一些研究人员试图解决CNN的这两个问题。但是,代表模糊级别的Defocus图的简单串联导致了次优性能。考虑到Defocus Blur的空间变体特性和Defocus Map中指示的模糊级别,我们采用Defocus Map作为条件指导来调整输入模糊图像而不是简单串联的特征。然后,我们提出了一个基于Defocus图的空间调制的简单但有效的网络。为了实现这一目标,我们设计了一个由三个子网络组成的网络,包括DeFocus Map估计网络,该网络将DeFocus Map编码为条件特征的条件网络以及根据条件功能执行空间动态调制的DeFocus Deblurring网络。此外,空间动态调制基于仿射变换函数,以调整输入模糊图像的特征。实验结果表明,与常用的公共测试数据集中的现有最新方法相比,我们的方法可以实现更好的定量和定性评估性能。
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Non-uniform blind deblurring for general dynamic scenes is a challenging computer vision problem as blurs arise not only from multiple object motions but also from camera shake, scene depth variation. To remove these complicated motion blurs, conventional energy optimization based methods rely on simple assumptions such that blur kernel is partially uniform or locally linear. Moreover, recent machine learning based methods also depend on synthetic blur datasets generated under these assumptions. This makes conventional deblurring methods fail to remove blurs where blur kernel is difficult to approximate or parameterize (e.g. object motion boundaries). In this work, we propose a multi-scale convolutional neural network that restores sharp images in an end-to-end manner where blur is caused by various sources. Together, we present multiscale loss function that mimics conventional coarse-to-fine approaches. Furthermore, we propose a new large-scale dataset that provides pairs of realistic blurry image and the corresponding ground truth sharp image that are obtained by a high-speed camera. With the proposed model trained on this dataset, we demonstrate empirically that our method achieves the state-of-the-art performance in dynamic scene deblurring not only qualitatively, but also quantitatively.
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图像运动模糊通常是由于移动物体或摄像头摇动而导致的。这种模糊通常是方向性的,不均匀。先前的研究工作试图通过使用自我注意力的自我次数多尺度或多斑架构来解决非均匀的模糊。但是,使用自我电流框架通常会导致更长的推理时间,而像素间或通道间的自我注意力可能会导致过度记忆使用。本文提出了模糊的注意力网络(BANET),该网络通过单个正向通行证完成了准确有效的脱脂。我们的Banet利用基于区域的自我注意力,并通过多内核条池汇总到不同程度的模糊模式,并具有级联的平行扩张卷积,以汇总多尺度内容特征。关于GoPro和Hide基准的广泛实验结果表明,所提出的班轮在模糊的图像修复中表现出色,并可以实时提供Deblurred结果。
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In single image deblurring, the "coarse-to-fine" scheme, i.e. gradually restoring the sharp image on different resolutions in a pyramid, is very successful in both traditional optimization-based methods and recent neural-networkbased approaches. In this paper, we investigate this strategy and propose a Scale-recurrent Network (SRN-DeblurNet) for this deblurring task. Compared with the many recent learning-based approaches in [25], it has a simpler network structure, a smaller number of parameters and is easier to train. We evaluate our method on large-scale deblurring datasets with complex motion. Results show that our method can produce better quality results than state-of-thearts, both quantitatively and qualitatively.
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By adopting popular pixel-wise loss, existing methods for defocus deblurring heavily rely on well aligned training image pairs. Although training pairs of ground-truth and blurry images are carefully collected, e.g., DPDD dataset, misalignment is inevitable between training pairs, making existing methods possibly suffer from deformation artifacts. In this paper, we propose a joint deblurring and reblurring learning (JDRL) framework for single image defocus deblurring with misaligned training pairs. Generally, JDRL consists of a deblurring module and a spatially invariant reblurring module, by which deblurred result can be adaptively supervised by ground-truth image to recover sharp textures while maintaining spatial consistency with the blurry image. First, in the deblurring module, a bi-directional optical flow-based deformation is introduced to tolerate spatial misalignment between deblurred and ground-truth images. Second, in the reblurring module, deblurred result is reblurred to be spatially aligned with blurry image, by predicting a set of isotropic blur kernels and weighting maps. Moreover, we establish a new single image defocus deblurring (SDD) dataset, further validating our JDRL and also benefiting future research. Our JDRL can be applied to boost defocus deblurring networks in terms of both quantitative metrics and visual quality on DPDD, RealDOF and our SDD datasets.
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在大多数视频平台(如youtube和Tiktok)中,播放的视频通常经过多个视频编码,例如通过记录设备,视频编辑应用程序的软件编码,以及视频应用程序服务器的单个/多个视频转码。以前的压缩视频恢复工作通常假设压缩伪像是由一次性编码引起的。因此,衍生的解决方案通常在实践中通常不起作用。在本文中,我们提出了一种新的方法,时间空间辅助网络(TSAN),用于转码视频恢复。我们的方法考虑了视频编码和转码之间的独特特征,我们将初始浅编码视频视为中间标签,以帮助网络进行自我监督的注意培训。此外,我们采用相邻的多帧信息,并提出用于转码视频恢复的时间可变形对准和金字塔空间融合。实验结果表明,该方法的性能优于以前的技术。代码可在https://github.com/iceCherylxuli/tsan获得。
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由于大气湍流的扭曲而恢复图像是一个长期存在的问题,这是由于变形的空间变化,图像形成过程的非线性以及训练和测试数据的稀缺性。现有方法通常在失真模型上具有强大的统计假设,在许多情况下,由于没有概括,因此在现实世界中的性能有限。为了克服挑战,本文提出了一种端到端物理驱动的方法,该方法有效,可以推广到现实世界的湍流。在数据合成方面,我们通过通过宽sense式的平稳性近似随机场来显着增加SOTA湍流模拟器可以处理的图像分辨率。新的数据合成过程使大规模的多级湍流和训练的地面真相对产生。在网络设计方面,我们提出了湍流缓解变压器(TMT),这是一个两级U-NET形状的多帧恢复网络,该网络具有Noval有效的自发机制,称为暂时通道关节关注(TCJA)。我们还引入了一种新的培训方案,该方案由新的模拟器启用,并设计新的变压器单元以减少内存消耗。在静态场景和动态场景上的实验结果是有希望的,包括各种真实的湍流场景。
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Convolutional Neural Network (CNN)-based image super-resolution (SR) has exhibited impressive success on known degraded low-resolution (LR) images. However, this type of approach is hard to hold its performance in practical scenarios when the degradation process is unknown. Despite existing blind SR methods proposed to solve this problem using blur kernel estimation, the perceptual quality and reconstruction accuracy are still unsatisfactory. In this paper, we analyze the degradation of a high-resolution (HR) image from image intrinsic components according to a degradation-based formulation model. We propose a components decomposition and co-optimization network (CDCN) for blind SR. Firstly, CDCN decomposes the input LR image into structure and detail components in feature space. Then, the mutual collaboration block (MCB) is presented to exploit the relationship between both two components. In this way, the detail component can provide informative features to enrich the structural context and the structure component can carry structural context for better detail revealing via a mutual complementary manner. After that, we present a degradation-driven learning strategy to jointly supervise the HR image detail and structure restoration process. Finally, a multi-scale fusion module followed by an upsampling layer is designed to fuse the structure and detail features and perform SR reconstruction. Empowered by such degradation-based components decomposition, collaboration, and mutual optimization, we can bridge the correlation between component learning and degradation modelling for blind SR, thereby producing SR results with more accurate textures. Extensive experiments on both synthetic SR datasets and real-world images show that the proposed method achieves the state-of-the-art performance compared to existing methods.
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Multi-Scale and U-shaped Networks are widely used in various image restoration problems, including deblurring. Keeping in mind the wide range of applications, we present a comparison of these architectures and their effects on image deblurring. We also introduce a new block called as NFResblock. It consists of a Fast Fourier Transformation layer and a series of modified Non-Linear Activation Free Blocks. Based on these architectures and additions, we introduce NFResnet and NFResnet+, which are modified multi-scale and U-Net architectures, respectively. We also use three different loss functions to train these architectures: Charbonnier Loss, Edge Loss, and Frequency Reconstruction Loss. Extensive experiments on the Deep Video Deblurring dataset, along with ablation studies for each component, have been presented in this paper. The proposed architectures achieve a considerable increase in Peak Signal to Noise (PSNR) ratio and Structural Similarity Index (SSIM) value.
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Despite deep end-to-end learning methods have shown their superiority in removing non-uniform motion blur, there still exist major challenges with the current multi-scale and scale-recurrent models: 1) Deconvolution/upsampling operations in the coarse-to-fine scheme result in expensive runtime; 2) Simply increasing the model depth with finer-scale levels cannot improve the quality of deblurring. To tackle the above problems, we present a deep hierarchical multi-patch network inspired by Spatial Pyramid Matching to deal with blurry images via a fine-tocoarse hierarchical representation. To deal with the performance saturation w.r.t. depth, we propose a stacked version of our multi-patch model. Our proposed basic multi-patch model achieves the state-of-the-art performance on the Go-Pro dataset while enjoying a 40× faster runtime compared to current multi-scale methods. With 30ms to process an image at 1280×720 resolution, it is the first real-time deep motion deblurring model for 720p images at 30fps. For stacked networks, significant improvements (over 1.2dB) are achieved on the GoPro dataset by increasing the network depth. Moreover, by varying the depth of the stacked model, one can adapt the performance and runtime of the same network for different application scenarios.
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我们引入了一个新颖的框架,用于连续的面部运动脱毛,该框架通过矩控制因子恢复单个运动毛面脸部图像中潜在的连续锋利力矩。尽管动作毛刺图像是在曝光时间内连续锋利矩的累积信号,但大多数现有的单个图像脱毛方法旨在使用多个网络和训练阶段恢复固定数量的帧。为了解决这个问题,我们提出了一个基于GAN(CFMD-GAN)的连续面部运动脱毛网络,该网络是一个新颖的框架,用于恢复带有单个网络和单个训练阶段的单个运动型面部图像中潜在的连续力矩。为了稳定网络培训,我们训练发电机以通过面部特定于面部知识的面部基于面部运动的重新排序过程(FMR)确定的顺序恢复连续矩。此外,我们提出了一个辅助回归器,该回归器通过估计连续锋利的力矩来帮助我们的发电机产生更准确的图像。此外,我们引入了一个控制自适应(CONTADA)块,该块执行空间变形的卷积和频道的注意,作为控制因子的函数。 300VW数据集上的大量实验表明,所提出的框架通过改变力矩控制因子来生成各种连续的输出帧。与最近使用相同300VW训练集训练的最近的单一单击图像脱蓝色网络相比,提出的方法显示了在感知指标(包括LPIPS,FID和Arcface身份距离)方面恢复中央锋利框架的出色性能。该方法的表现优于现有的单一视频脱蓝和用于定性和定量比较的方法。
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Existing convolutional neural networks (CNN) based image super-resolution (SR) methods have achieved impressive performance on bicubic kernel, which is not valid to handle unknown degradations in real-world applications. Recent blind SR methods suggest to reconstruct SR images relying on blur kernel estimation. However, their results still remain visible artifacts and detail distortion due to the estimation errors. To alleviate these problems, in this paper, we propose an effective and kernel-free network, namely DSSR, which enables recurrent detail-structure alternative optimization without blur kernel prior incorporation for blind SR. Specifically, in our DSSR, a detail-structure modulation module (DSMM) is built to exploit the interaction and collaboration of image details and structures. The DSMM consists of two components: a detail restoration unit (DRU) and a structure modulation unit (SMU). The former aims at regressing the intermediate HR detail reconstruction from LR structural contexts, and the latter performs structural contexts modulation conditioned on the learned detail maps at both HR and LR spaces. Besides, we use the output of DSMM as the hidden state and design our DSSR architecture from a recurrent convolutional neural network (RCNN) view. In this way, the network can alternatively optimize the image details and structural contexts, achieving co-optimization across time. Moreover, equipped with the recurrent connection, our DSSR allows low- and high-level feature representations complementary by observing previous HR details and contexts at every unrolling time. Extensive experiments on synthetic datasets and real-world images demonstrate that our method achieves the state-of-the-art against existing methods. The source code can be found at https://github.com/Arcananana/DSSR.
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由于模糊图像本身缺乏时间和纹理信息,因此非均匀的图像脱毛是一项具有挑战性的任务。来自辅助传感器的互补信息正在探索这些事件传感器以解决这些限制。后者可以异步记录对数强度的变化,称为事件,具有高时间分辨率和高动态范围。当前的基于事件的脱蓝晶方法将模糊图像与事件结合在一起,以共同估计每个像素运动和DeBlur操作员。在本文中,我们认为一种分裂和争议的方法更适合此任务。为此,我们建议使用调制可变形的卷积,其内核偏移和调制掩模是从事件中动态估算的,以编码场景中的运动,而从模糊图像和相应事件的组合中学习了deblur操作员。此外,我们采用了一种粗到十的多尺度重建方法来应对低对比度区域中事件的固有稀疏性。重要的是,我们介绍了第一个数据集,其中包含对曝光时间内的真实RGB模糊图像和相关事件的对。我们的结果在使用事件时显示出更好的总体鲁棒性,在合成数据上,PSNR的改进最多可提高1.57db,而对真实事件数据的改进则提高了1.08 dB。
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在本文中,我们研究了现实世界图像脱毛的问题,并考虑了改善深度图像脱布模型的性能的两个关键因素,即培训数据综合和网络体系结构设计。经过现有合成数据集训练的脱毛模型在由于域移位引起的真实模糊图像上的表现较差。为了减少合成和真实域之间的域间隙,我们提出了一种新颖的现实模糊合成管道来模拟摄像机成像过程。由于我们提出的合成方法,可以使现有的Deblurring模型更强大,以处理现实世界的模糊。此外,我们开发了一个有效的脱蓝色模型,该模型同时捕获特征域中的非本地依赖性和局部上下文。具体而言,我们将多路径变压器模块介绍给UNET架构,以进行丰富的多尺度功能学习。在三个现实世界数据集上进行的全面实验表明,所提出的Deblurring模型的性能优于最新方法。
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