Scene text editing (STE) aims to replace text with the desired one while preserving background and styles of the original text. However, due to the complicated background textures and various text styles, existing methods fall short in generating clear and legible edited text images. In this study, we attribute the poor editing performance to two problems: 1) Implicit decoupling structure. Previous methods of editing the whole image have to learn different translation rules of background and text regions simultaneously. 2) Domain gap. Due to the lack of edited real scene text images, the network can only be well trained on synthetic pairs and performs poorly on real-world images. To handle the above problems, we propose a novel network by MOdifying Scene Text image at strokE Level (MOSTEL). Firstly, we generate stroke guidance maps to explicitly indicate regions to be edited. Different from the implicit one by directly modifying all the pixels at image level, such explicit instructions filter out the distractions from background and guide the network to focus on editing rules of text regions. Secondly, we propose a Semi-supervised Hybrid Learning to train the network with both labeled synthetic images and unpaired real scene text images. Thus, the STE model is adapted to real-world datasets distributions. Moreover, two new datasets (Tamper-Syn2k and Tamper-Scene) are proposed to fill the blank of public evaluation datasets. Extensive experiments demonstrate that our MOSTEL outperforms previous methods both qualitatively and quantitatively. Datasets and code will be available at https://github.com/qqqyd/MOSTEL.

场景文本擦除旨在从场景图像中删除文本内容，而当前的最新文本擦除模型经过大规模合成数据的培训。尽管数据合成引擎可以提供大量注释的训练样本，但合成数据和现实世界数据之间存在差异。在本文中，我们在未标记的现实世界场景文本图像上采用自我审视来进行特征表示。一项新颖的借口任务旨在在图像变体的文本蒙版之间保持一致。我们设计了渐进式擦除网络，以删除剩余文本。场景文本通过利用中间生成的结果逐渐消除，这为随后的更高质量结果奠定了基础。实验表明，我们的方法显着改善了文本擦除任务的概括，并在公共基准上实现了最先进的性能。

场景文本擦除，它在自然图像中替换了具有合理内容的文本区域，近年来在计算机视觉社区中造成了重大关注。场景文本删除中有两个潜在的子任务：文本检测和图像修复。两个子任务都需要相当多的数据来实现更好的性能;但是，缺乏大型现实世界场景文本删除数据集不允许现有方法实现其潜力。为了弥补缺乏成对的真实世界数据，我们在额外的增强后大大使用了合成文本，随后仅在改进的合成文本引擎生成的数据集上培训了我们的模型。我们所提出的网络包含一个笔划掩模预测模块和背景染色模块，可以从裁剪文本图像中提取文本笔划作为相对较小的孔，以维持更多的背景内容以获得更好的修复结果。该模型可以用边界框部分删除场景图像中的文本实例，或者使用现有场景文本检测器进行自动场景文本擦除。 SCUT-SYN，ICDAR2013和SCUT-ENSTEXT数据集的定性和定量评估的实验结果表明，即使在现实世界数据上培训，我们的方法也显着优于现有的最先进的方法。

由于其在隐私保护，文档修复和文本编辑方面的各种应用，因此删除文本引起了越来越多的关注。它显示出深度神经网络的重大进展。但是，大多数现有方法通常会为复杂的背景产生不一致的结果。为了解决此问题，我们提出了一个上下文引导的文本删除网络，称为CTRNET。 Ctrnet探索了低级结构和高级判别上下文特征，作为指导背景恢复过程的先验知识。我们进一步提出了具有CNNS和Transformer-编码器的局部全球含量建模（LGCM）块，以捕获局部特征并在全球像素之间建立长期关系。最后，我们将LGCM与特征建模和解码的上下文指南合并。在基准数据集，Scut-Enstext和Scut-Syn上进行的实验表明，CTRNET显着胜过现有的最新方法。此外，关于考试论文的定性实验也证明了我们方法的概括能力。代码和补充材料可在https://github.com/lcy0604/ctrnet上获得。

场景文本图像综合技术旨在自然构成背景场景上的文本实例，非常吸引训练深神经网络，因为它们可以提供准确而全面的注释信息。先前的研究探索了基于实际观察结果的规则，在二维和三维表面上生成了合成文本图像。其中一些研究提出了从学习中生成场景文本图像。但是，由于缺乏合适的培训数据集，已经探索了无监督的框架，以从现有的现实世界数据中学习，这可能不会导致强大的性能。为了缓解这一难题并促进基于学习的场景文本综合研究，我们建议使用公共基准准备的真实世界数据集，并具有三种注释：四边形级别的bbox，streoke-level文本掩码和文本屏蔽词图片。使用Depompst数据集，我们提出了一个图像合成引擎，其中包括文本位置建议网络（TLPNET）和文本外观适应网络（TAANET）。 TLPNET首先预测适合文本嵌入的区域。然后，taanet根据背景的上下文自适应地改变文本实例的几何形状和颜色。我们的全面实验验证了提出的方法为场景文本检测器生成预浏览数据的有效性。

With the development of convolutional neural networks, hundreds of deep learning based dehazing methods have been proposed. In this paper, we provide a comprehensive survey on supervised, semi-supervised, and unsupervised single image dehazing. We first discuss the physical model, datasets, network modules, loss functions, and evaluation metrics that are commonly used. Then, the main contributions of various dehazing algorithms are categorized and summarized. Further, quantitative and qualitative experiments of various baseline methods are carried out. Finally, the unsolved issues and challenges that can inspire the future research are pointed out. A collection of useful dehazing materials is available at \url{https://github.com/Xiaofeng-life/AwesomeDehazing}.

自动艺术文本生成是一个新兴主题，由于其广泛的应用而受到越来越多的关注。艺术文本可以分别分为三个组成部分，内容，字体和纹理。现有的艺术文本生成模型通常着重于操纵上述组件的一个方面，这是可控的一般艺术文本生成的亚最佳解决方案。为了解决这个问题，我们提出了一种新颖的方法，即Gentext，以通过将字体和纹理样式从不同的源图像迁移到目标图像来实现一般的艺术文本样式转移。具体而言，我们当前的工作分别结合了三个不同的阶段，分别是具有单个强大的编码网络和两个单独的样式生成器网络，一个用于字体传输的统一平台，分别为统一的平台，另一个用于风格化和命运化。命令阶段首先提取字体参考图像的字体样式，然后字体传输阶段使用所需的字体样式生成目标内容。最后，样式阶段呈现有关参考图像中纹理样式的结果字体图像。此外，考虑到配对艺术文本图像的难度数据采集，我们的模型是在无监督的设置下设计的，可以从未配对的数据中有效地优化所有阶段。定性和定量结果是在艺术文本基准上执行的，这证明了我们提出的模型的出色性能。带有模型的代码将来将公开使用。

本文的目标是对面部素描合成（FSS）问题进行全面的研究。然而，由于获得了手绘草图数据集的高成本，因此缺乏完整的基准，用于评估过去十年的FSS算法的开发。因此，我们首先向FSS引入高质量的数据集，名为FS2K，其中包括2,104个图像素描对，跨越三种类型的草图样式，图像背景，照明条件，肤色和面部属性。 FS2K与以前的FSS数据集不同于难度，多样性和可扩展性，因此应促进FSS研究的进展。其次，我们通过调查139种古典方法，包括34个手工特征的面部素描合成方法，37个一般的神经式传输方法，43个深映像到图像翻译方法，以及35个图像 - 素描方法。此外，我们详细说明了现有的19个尖端模型的综合实验。第三，我们为FSS提供了一个简单的基准，名为FSGAN。只有两个直截了当的组件，即面部感知屏蔽和风格矢量扩展，FSGAN将超越所提出的FS2K数据集的所有先前最先进模型的性能，通过大边距。最后，我们在过去几年中汲取的经验教训，并指出了几个未解决的挑战。我们的开源代码可在https://github.com/dengpingfan/fsgan中获得。

Automatic font generation without human experts is a practical and significant problem, especially for some languages that consist of a large number of characters. Existing methods for font generation are often in supervised learning. They require a large number of paired data, which are labor-intensive and expensive to collect. In contrast, common unsupervised image-to-image translation methods are not applicable to font generation, as they often define style as the set of textures and colors. In this work, we propose a robust deformable generative network for unsupervised font generation (abbreviated as DGFont++). We introduce a feature deformation skip connection (FDSC) to learn local patterns and geometric transformations between fonts. The FDSC predicts pairs of displacement maps and employs the predicted maps to apply deformable convolution to the low-level content feature maps. The outputs of FDSC are fed into a mixer to generate final results. Moreover, we introduce contrastive self-supervised learning to learn a robust style representation for fonts by understanding the similarity and dissimilarities of fonts. To distinguish different styles, we train our model with a multi-task discriminator, which ensures that each style can be discriminated independently. In addition to adversarial loss, another two reconstruction losses are adopted to constrain the domain-invariant characteristics between generated images and content images. Taking advantage of FDSC and the adopted loss functions, our model is able to maintain spatial information and generates high-quality character images in an unsupervised manner. Experiments demonstrate that our model is able to generate character images of higher quality than state-of-the-art methods.

人物图像的旨在在源图像上执行非刚性变形，这通常需要未对准数据对进行培训。最近，自我监督的方法通过合并自我重建的解除印章表达来表达这项任务的巨大前景。然而，这些方法未能利用解除戒断功能之间的空间相关性。在本文中，我们提出了一种自我监督的相关挖掘网络（SCM-NET）来重新排列特征空间中的源图像，其中两种协作模块是集成的，分解的样式编码器（DSE）和相关挖掘模块（CMM）。具体地，DSE首先在特征级别创建未对齐的对。然后，CMM建立用于特征重新排列的空间相关领域。最终，翻译模块将重新排列的功能转换为逼真的结果。同时，为了提高跨尺度姿态变换的保真度，我们提出了一种基于曲线图的体结构保持损失（BSR损耗），以保持半体上的合理的身体结构到全身。与Deepfashion DataSet进行的广泛实验表明了与其他监督和无监督和无监督的方法相比的方法的优势。此外，对面部的令人满意的结果显示了我们在其他变形任务中的方法的多功能性。

我们提出了第一个统一的框架Unicolor，以支持多种方式的着色，包括无条件和条件性的框架，例如中风，示例，文本，甚至是它们的混合。我们没有为每种类型的条件学习单独的模型，而是引入了一个两阶段的着色框架，以将各种条件纳入单个模型。在第一阶段，多模式条件将转换为提示点的共同表示。特别是，我们提出了一种基于剪辑的新方法，将文本转换为提示点。在第二阶段，我们提出了一个基于变压器的网络，该网络由Chroma-vqgan和Hybrid-Transformer组成，以生成以提示点为条件的多样化和高质量的着色结果。定性和定量比较都表明，我们的方法在每种控制方式中都优于最先进的方法，并进一步实现了以前不可行的多模式着色。此外，我们设计了一个交互式界面，显示了我们统一框架在实际用法中的有效性，包括自动着色，混合控制着色，局部再现和迭代色彩编辑。我们的代码和型号可在https://luckyhzt.github.io/unicolor上找到。

Image harmonization task aims at harmonizing different composite foreground regions according to specific background image. Previous methods would rather focus on improving the reconstruction ability of the generator by some internal enhancements such as attention, adaptive normalization and light adjustment, $etc.$. However, they pay less attention to discriminating the foreground and background appearance features within a restricted generator, which becomes a new challenge in image harmonization task. In this paper, we propose a novel image harmonization framework with external style fusion and region-wise contrastive learning scheme. For the external style fusion, we leverage the external background appearance from the encoder as the style reference to generate harmonized foreground in the decoder. This approach enhances the harmonization ability of the decoder by external background guidance. Moreover, for the contrastive learning scheme, we design a region-wise contrastive loss function for image harmonization task. Specifically, we first introduce a straight-forward samples generation method that selects negative samples from the output harmonized foreground region and selects positive samples from the ground-truth background region. Our method attempts to bring together corresponding positive and negative samples by maximizing the mutual information between the foreground and background styles, which desirably makes our harmonization network more robust to discriminate the foreground and background style features when harmonizing composite images. Extensive experiments on the benchmark datasets show that our method can achieve a clear improvement in harmonization quality and demonstrate the good generalization capability in real-scenario applications.

生成高质量的艺术肖像视频是计算机图形和愿景中的一项重要且理想的任务。尽管已经提出了一系列成功的肖像图像图像模型模型，但这些面向图像的方法在应用于视频（例如固定框架尺寸，面部对齐的要求，缺失的非种族细节和缺失的非种族细节和缺失的要求）时，具有明显的限制。时间不一致。在这项工作中，我们通过引入一个新颖的Vtoonify框架来研究具有挑战性的可控高分辨率肖像视频风格转移。具体而言，Vtoonify利用了Stylegan的中高分辨率层，以基于编码器提取的多尺度内容功能来渲染高质量的艺术肖像，以更好地保留框架细节。由此产生的完全卷积体系结构接受可变大小的视频中的非对齐面孔作为输入，从而有助于完整的面部区域，并在输出中自然动作。我们的框架与现有的基于Stylegan的图像图像模型兼容，以将其扩展到视频化，并继承了这些模型的吸引力，以进行柔性风格控制颜色和强度。这项工作分别为基于收藏和基于示例的肖像视频风格转移而建立在Toonify和DualStylegan的基于Toonify和Dualstylegan的Vtoonify的两个实例化。广泛的实验结果证明了我们提出的VTOONIFY框架对现有方法的有效性在生成具有灵活风格控件的高质量和临时艺术肖像视频方面的有效性。

StyleGAN has achieved great progress in 2D face reconstruction and semantic editing via image inversion and latent editing. While studies over extending 2D StyleGAN to 3D faces have emerged, a corresponding generic 3D GAN inversion framework is still missing, limiting the applications of 3D face reconstruction and semantic editing. In this paper, we study the challenging problem of 3D GAN inversion where a latent code is predicted given a single face image to faithfully recover its 3D shapes and detailed textures. The problem is ill-posed: innumerable compositions of shape and texture could be rendered to the current image. Furthermore, with the limited capacity of a global latent code, 2D inversion methods cannot preserve faithful shape and texture at the same time when applied to 3D models. To solve this problem, we devise an effective self-training scheme to constrain the learning of inversion. The learning is done efficiently without any real-world 2D-3D training pairs but proxy samples generated from a 3D GAN. In addition, apart from a global latent code that captures the coarse shape and texture information, we augment the generation network with a local branch, where pixel-aligned features are added to faithfully reconstruct face details. We further consider a new pipeline to perform 3D view-consistent editing. Extensive experiments show that our method outperforms state-of-the-art inversion methods in both shape and texture reconstruction quality. Code and data will be released.

Face Restoration (FR) aims to restore High-Quality (HQ) faces from Low-Quality (LQ) input images, which is a domain-specific image restoration problem in the low-level computer vision area. The early face restoration methods mainly use statistic priors and degradation models, which are difficult to meet the requirements of real-world applications in practice. In recent years, face restoration has witnessed great progress after stepping into the deep learning era. However, there are few works to study deep learning-based face restoration methods systematically. Thus, this paper comprehensively surveys recent advances in deep learning techniques for face restoration. Specifically, we first summarize different problem formulations and analyze the characteristic of the face image. Second, we discuss the challenges of face restoration. Concerning these challenges, we present a comprehensive review of existing FR methods, including prior based methods and deep learning-based methods. Then, we explore developed techniques in the task of FR covering network architectures, loss functions, and benchmark datasets. We also conduct a systematic benchmark evaluation on representative methods. Finally, we discuss future directions, including network designs, metrics, benchmark datasets, applications,etc. We also provide an open-source repository for all the discussed methods, which is available at https://github.com/TaoWangzj/Awesome-Face-Restoration.

基于图像的艺术渲染可以使用算法图像过滤合成各种表达式。与基于深度学习的方法相反，这些基于启发式的过滤技术可以在高分辨率图像上运行，可以解释，并且可以根据各个设计方面进行参数化。但是，适应或扩展这些技术生产新样式通常是一项乏味且容易出错的任务，需要专家知识。我们提出了一个新的范式来减轻此问题：实现算法图像过滤技术作为可区分的操作，可以学习与某些参考样式一致的参数化。为此，我们提出了明智的，这是一个基于示例的图像处理系统，可以在公共框架内处理多种风格化技术，例如水彩，油或卡通风格。通过训练全局和本地滤波器参数化的参数预测网络，我们可以同时适应参考样式和图像内容，例如增强面部特征。我们的方法可以在样式转移框架中进行优化，也可以在用于图像到图像翻译的生成对流设置中学习。我们证明，共同训练XDOG滤波器和用于后处理的CNN可以与基于GAN的最新方法获得可比的结果。

最近，车辆相似性学习，也称为重新识别（REID），引起了计算机视觉的极大关注。已经开发了几种算法并获得了相当大的成功。但是，由于可见性差，大多数现有方法在朦胧的情况下具有不愉快的性能。尽管有些策略可以解决此问题，但由于现实情况下的性能有限，缺乏现实世界中的清晰地面真理，它们仍然可以改善空间。因此，为了解决此问题的灵感，我们构建了一个称为\ textbf {rvsl}的训练范式，该范围集成了REID和域转换技术。该网络接受了半监督时尚的培训，不需要采用ID标签和相应的清晰的地面真相来学习真实世界中的险恶车辆的雷德任务。为了进一步限制无监督的学习过程，开发了几种损失。关于合成和现实世界数据集的实验结果表明，所提出的方法可以在朦胧的车辆REID问题上实现最新性能。值得一提的是，尽管提出的方法是在没有现实世界标签信息的情况下接受培训的，但与在完整标签信息中培训的现有监督方法相比，它可以实现竞争性能。

This paper presents a portrait stylization method designed for real-time mobile applications with limited style examples available. Previous learning based stylization methods suffer from the geometric and semantic gaps between portrait domain and style domain, which obstacles the style information to be correctly transferred to the portrait images, leading to poor stylization quality. Based on the geometric prior of human facial attributions, we propose to utilize geometric alignment to tackle this issue. Firstly, we apply Thin-Plate-Spline (TPS) on feature maps in the generator network and also directly to style images in pixel space, generating aligned portrait-style image pairs with identical landmarks, which closes the geometric gaps between two domains. Secondly, adversarial learning maps the textures and colors of portrait images to the style domain. Finally, geometric aware cycle consistency preserves the content and identity information unchanged, and deformation invariant constraint suppresses artifacts and distortions. Qualitative and quantitative comparison validate our method outperforms existing methods, and experiments proof our method could be trained with limited style examples (100 or less) in real-time (more than 40 FPS) on mobile devices. Ablation study demonstrates the effectiveness of each component in the framework.

We present NeRFEditor, an efficient learning framework for 3D scene editing, which takes a video captured over 360{\deg} as input and outputs a high-quality, identity-preserving stylized 3D scene. Our method supports diverse types of editing such as guided by reference images, text prompts, and user interactions. We achieve this by encouraging a pre-trained StyleGAN model and a NeRF model to learn from each other mutually. Specifically, we use a NeRF model to generate numerous image-angle pairs to train an adjustor, which can adjust the StyleGAN latent code to generate high-fidelity stylized images for any given angle. To extrapolate editing to GAN out-of-domain views, we devise another module that is trained in a self-supervised learning manner. This module maps novel-view images to the hidden space of StyleGAN that allows StyleGAN to generate stylized images on novel views. These two modules together produce guided images in 360{\deg}views to finetune a NeRF to make stylization effects, where a stable fine-tuning strategy is proposed to achieve this. Experiments show that NeRFEditor outperforms prior work on benchmark and real-world scenes with better editability, fidelity, and identity preservation.

本文提出了一种有效融合多暴露输入并使用未配对数据集生成高质量的高动态范围（HDR）图像的方法。基于深度学习的HDR图像生成方法在很大程度上依赖于配对的数据集。地面真相图像在生成合理的HDR图像中起着领导作用。没有地面真理的数据集很难应用于训练深层神经网络。最近，在没有配对示例的情况下，生成对抗网络（GAN）证明了它们将图像从源域X转换为目标域y的潜力。在本文中，我们提出了一个基于GAN的网络，用于解决此类问题，同时产生愉快的HDR结果，名为Uphdr-Gan。提出的方法放松了配对数据集的约束，并了解了从LDR域到HDR域的映射。尽管丢失了这些对数据，但UPHDR-GAN可以借助修改后的GAN丢失，改进的歧视器网络和有用的初始化阶段正确处理由移动对象或未对准引起的幽灵伪像。所提出的方法保留了重要区域的细节并提高了总图像感知质量。与代表性方法的定性和定量比较证明了拟议的UPHDR-GAN的优越性。