\ textit {virtual try-on}(vton)的想法通过为用户提供在舒适的家中尝试服装的便利,从而使电子零售受益。总的来说,当一个人与手臂折叠的人(即弯曲或交叉)想要尝试服装时,大多数现有的VTON方法会产生不一致的结果。在长袖服装的情况下,问题变得严重。当时,对于交叉的臂姿势,可能会发生不同的衣服零件之间的重叠。现有的方法,尤其是采用\ textit {薄板样条(TPS)}的基于扭曲的方法}转换无法解决此类情况。为此,我们尝试了一种解决方案方法,将源头的衣服分为语义上有意义的部分,每个部分都独立扭曲为人的形状。为了解决弯曲问题,我们采用了与人体几何形状一致的手工制作的几何特征来扭曲源装备。此外,我们提出了两个基于学习的模块:合成器网络和一个掩码预测网络。所有这些共同尝试生成光合逼真的,姿势射击的VTON解决方案,而无需任何配对的训练数据。与某些基准方法的比较清楚地确定了该方法的有效性。
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基于图像的虚拟试图是由于其巨大的真实潜力,以人为本的图像生成最有希望的应用之一。然而,由于大多数预先接近店内服装到目标人物,他们需要对成对的训练数据集进行费力和限制性的结构,严重限制了它们的可扩展性。虽然最近的一些作品试图直接从一个人转移服装,但减轻了收集配对数据集的需要,它们的表现受缺乏配对(监督)信息影响。特别地,衣服的解开样式和空间信息成为一个挑战,通过需要辅助数据或广泛的在线优化程序来解决任何方法,从而仍抑制其可扩展性。实现A \ EMPH {可扩展}虚拟试样系统,可以以无监督的方式在源和目标人物之间传输任意服装,因此我们提出了一种纹理保留的端到端网络,该包装空间 - 适应甘(意大利面),促进了现实世界的未配对虚拟试验。具体而言,要解开每位服装的风格和空间信息,意大利面甘包括一个创新的补丁路由解剖模块,用于成功挡住衣服纹理和形状特性。由源人关键点引导,修补程序路由的解剖学模块首先将衣服脱发到标准化的贴片中,从而消除了衣服的固有空间信息,然后将归一化贴片重建到符合目标人员姿势的翘曲衣服。鉴于翘曲的衣服,Pasta-GaN进一步推出了一种新型空间适应性的残余块,指导发电机合成更现实的服装细节。
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基于图像的虚拟试验是以人为中心的现实潜力,是以人为中心的图像生成的最有希望的应用之一。在这项工作中,我们迈出了一步,探索多功能的虚拟尝试解决方案,我们认为这应该具有三个主要属性,即,它们应支持无监督的培训,任意服装类别和可控的服装编辑。为此,我们提出了一个特征性的端到端网络,即用空间自适应的斑点适应性GAN ++(Pasta-gan ++),以实现用于高分辨率不合规的虚拟试验的多功能系统。具体而言,我们的意大利面++由一个创新的贴布贴片的拆卸模块组成,可以将完整的服装切换为归一化贴剂,该贴片能够保留服装样式信息,同时消除服装空间信息,从而减轻在未受监督训练期间过度适应的问题。此外,面食++引入了基于贴片的服装表示和一个贴片引导的解析合成块,使其可以处理任意服装类别并支持本地服装编辑。最后,为了获得具有逼真的纹理细节的尝试结果,面食gan ++结合了一种新型的空间自适应残留模块,以将粗翘曲的服装功能注入发电机。对我们新收集的未配对的虚拟试验(UPT)数据集进行了广泛的实验,证明了面食gan ++比现有SOTA的优越性及其可控服装编辑的能力。
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基于深度学习的虚拟试用系统最近取得了一些令人鼓舞的进展,但仍然存在需要解决的几个重要挑战,例如尝试所有类型的任意衣服,从一个类别到另一个类别的衣服尝试 - 少数文物的结果。要处理这个问题,我们在本文中首先使用各种类型的衣服,\即顶部,底部和整个衣服收集新的数据集,每个人都有多个类别,具有模式,徽标和其他细节的服装特性丰富的信息。基于此数据集,我们提出了用于全型衣服的任意虚拟试验网络(Avton),这可以通过保存和交易目标衣服和参考人员的特性来综合实际的试验图像。我们的方法包括三个模块:1)四肢预测模块,其用于通过保留参考人物的特性来预测人体部位。这对于处理交叉类别的试验任务(例如长袖\(\ Leftrightarrow \)短袖或长裤(\ Leftrightarrow \)裙子,\等),\等)特别适合,其中暴露的手臂或腿部有皮肤可以合理地预测颜色和细节; 2)改进的几何匹配模块,该模块设计成根据目标人的几何形状的扭曲衣服。通过紧凑的径向功能(Wendland的\(\ PSI \) - 功能),我们改进了基于TPS的翘曲方法; 3)折衷融合模块,即扭转翘曲衣服和参考人员的特点。该模块是基于网络结构的微调对称性来使生成的试验图像看起来更加自然和现实。进行了广泛的模拟,与最先进的虚拟试用方法相比,我们的方法可以实现更好的性能。
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基于图像的虚拟试验努力将服装的外观转移到目标人的图像上。先前的工作主要集中在上身衣服(例如T恤,衬衫和上衣)上,并忽略了全身或低身物品。这种缺点来自一个主要因素:用于基于图像的虚拟试验的当前公开可用数据集并不解释此品种,从而限制了该领域的进度。为了解决这种缺陷,我们介绍着着装代码,其中包含多类服装的图像。着装代码比基于图像的虚拟试验的公共可用数据集大于3倍以上,并且具有前视图,全身参考模型的高分辨率配对图像(1024x768)。为了生成具有高视觉质量且细节丰富的高清尝试图像,我们建议学习细粒度的区分功能。具体而言,我们利用一种语义意识歧视器,该歧视器在像素级而不是图像级或贴片级上进行预测。广泛的实验评估表明,所提出的方法在视觉质量和定量结果方面超过了基线和最先进的竞争者。着装码数据集可在https://github.com/aimagelab/dress-code上公开获得。
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Image Virtual try-on aims at replacing the cloth on a personal image with a garment image (in-shop clothes), which has attracted increasing attention from the multimedia and computer vision communities. Prior methods successfully preserve the character of clothing images, however, occlusion remains a pernicious effect for realistic virtual try-on. In this work, we first present a comprehensive analysis of the occlusions and categorize them into two aspects: i) Inherent-Occlusion: the ghost of the former cloth still exists in the try-on image; ii) Acquired-Occlusion: the target cloth warps to the unreasonable body part. Based on the in-depth analysis, we find that the occlusions can be simulated by a novel semantically-guided mixup module, which can generate semantic-specific occluded images that work together with the try-on images to facilitate training a de-occlusion try-on (DOC-VTON) framework. Specifically, DOC-VTON first conducts a sharpened semantic parsing on the try-on person. Aided by semantics guidance and pose prior, various complexities of texture are selectively blending with human parts in a copy-and-paste manner. Then, the Generative Module (GM) is utilized to take charge of synthesizing the final try-on image and learning to de-occlusion jointly. In comparison to the state-of-the-art methods, DOC-VTON achieves better perceptual quality by reducing occlusion effects.
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人类姿势转移旨在将源人的外观转移到目标姿势。利用基于流量的非刚性人类图像的翘曲的现有方法取得了巨大的成功。然而,由于源和目标之间的空间相关性未充分利用,它们未能保留合成图像中的外观细节。为此,我们提出了基于流动的双重关注GaN(FDA-GaN),以应用于更高的发电质量的遮挡和变形感知功能融合。具体而言,可变形的局部注意力和流量相似性关注,构成双重关注机制,可以分别导出负责可变形和遮挡感知融合的输出特征。此外,为了维持传输的姿势和全球位置一致性,我们设计了一种姿势归一化网络,用于从目标姿势到源人员学习自适应标准化。定性和定量结果都表明,我们的方法在公共IPer和Deepfashion数据集中优于最先进的模型。
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虚拟试验旨在在店内服装和参考人员图像的情况下产生光真实的拟合结果。现有的方法通常建立多阶段框架来分别处理衣服翘曲和身体混合,或严重依赖基于中间解析器的标签,这些标签可能嘈杂甚至不准确。为了解决上述挑战,我们通过开发一种新型的变形注意流(DAFLOF)提出了一个单阶段的尝试框架,该框架将可变形的注意方案应用于多流量估计。仅将姿势关键点作为指导,分别为参考人员和服装图像估计了自我和跨跨性别的注意力流。通过对多个流场进行采样,通过注意机制同时提取并合并了来自不同语义区域的特征级和像素级信息。它使衣服翘曲和身体合成,同时以端到端的方式导致照片真实的结果。在两个尝试数据集上进行的广泛实验表明,我们提出的方法在定性和定量上都能达到最先进的性能。此外,其他两个图像编辑任务上的其他实验说明了我们用于多视图合成和图像动画方法的多功能性。
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Previous virtual try-on methods usually focus on aligning a clothing item with a person, limiting their ability to exploit the complex pose, shape and skin color of the person, as well as the overall structure of the clothing, which is vital to photo-realistic virtual try-on. To address this potential weakness, we propose a fill in fabrics (FIFA) model, a self-supervised conditional generative adversarial network based framework comprised of a Fabricator and a unified virtual try-on pipeline with a Segmenter, Warper and Fuser. The Fabricator aims to reconstruct the clothing image when provided with a masked clothing as input, and learns the overall structure of the clothing by filling in fabrics. A virtual try-on pipeline is then trained by transferring the learned representations from the Fabricator to Warper in an effort to warp and refine the target clothing. We also propose to use a multi-scale structural constraint to enforce global context at multiple scales while warping the target clothing to better fit the pose and shape of the person. Extensive experiments demonstrate that our FIFA model achieves state-of-the-art results on the standard VITON dataset for virtual try-on of clothing items, and is shown to be effective at handling complex poses and retaining the texture and embroidery of the clothing.
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The vision community has explored numerous pose guided human editing methods due to their extensive practical applications. Most of these methods still use an image-to-image formulation in which a single image is given as input to produce an edited image as output. However, the problem is ill-defined in cases when the target pose is significantly different from the input pose. Existing methods then resort to in-painting or style transfer to handle occlusions and preserve content. In this paper, we explore the utilization of multiple views to minimize the issue of missing information and generate an accurate representation of the underlying human model. To fuse the knowledge from multiple viewpoints, we design a selector network that takes the pose keypoints and texture from images and generates an interpretable per-pixel selection map. After that, the encodings from a separate network (trained on a single image human reposing task) are merged in the latent space. This enables us to generate accurate, precise, and visually coherent images for different editing tasks. We show the application of our network on 2 newly proposed tasks - Multi-view human reposing, and Mix-and-match human image generation. Additionally, we study the limitations of single-view editing and scenarios in which multi-view provides a much better alternative.
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在本文中,我们开发了一种强大的3D服装数字化解决方案,可以在现实世界时尚目录图像上概括用布纹理遮挡和大体姿势变化。我们假设已知类型的服装类型的固定拓扑参数模板网格模型(例如,T恤,裤子),并从输入目录图像执行高质量纹理的映射到与衣服的参数网格模型相对应的UV映射面板。我们通过首先预测服装边界的稀疏2D地标。随后,我们使用这些地标在UV地图面板上执行基于薄板样条的纹理传输。随后,我们使用深度纹理修复网络来填充TPS输出中的大孔(由于查看变化和自闭电),以产生一致的UV映射。此外,为了培训监督的地标预测和纹理修复任务,我们产生了一大组合成数据,其具有不同于各种姿势的各种视图的不同纹理和照明。此外,我们手动注释了一小组时尚目录图像从在线时尚电子商务平台到Finetune。我们开展彻底的经验评估,并在时尚目录图像上显示我们所提出的3D服装纹理解决方案的令人印象深刻的定性结果。这种3D服装数字化有助于我们解决启用3D虚拟试验的具有挑战性的任务。
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Image-based virtual try-on techniques have shown great promise for enhancing the user-experience and improving customer satisfaction on fashion-oriented e-commerce platforms. However, existing techniques are currently still limited in the quality of the try-on results they are able to produce from input images of diverse characteristics. In this work, we propose a Context-Driven Virtual Try-On Network (C-VTON) that addresses these limitations and convincingly transfers selected clothing items to the target subjects even under challenging pose configurations and in the presence of self-occlusions. At the core of the C-VTON pipeline are: (i) a geometric matching procedure that efficiently aligns the target clothing with the pose of the person in the input images, and (ii) a powerful image generator that utilizes various types of contextual information when synthesizing the final try-on result. C-VTON is evaluated in rigorous experiments on the VITON and MPV datasets and in comparison to state-of-the-art techniques from the literature. Experimental results show that the proposed approach is able to produce photo-realistic and visually convincing results and significantly improves on the existing state-of-the-art.
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可控的人图像合成任务可以通过对身体姿势和外观的明确控制来实现广泛的应用。在本文中,我们提出了一个基于跨注意的样式分布模块,该模块在源语义样式和目标姿势转移的目标姿势之间计算。该模块故意选择每个语义表示的样式,并根据目标姿势分配它们。交叉注意的注意力矩阵表达了目标姿势与所有语义的源样式之间的动态相似性。因此,可以利用它来从源图像路由颜色和纹理,并受到目标解析图的进一步限制,以实现更清晰的目标。同时,为了准确编码源外观,还添加了不同语义样式之间的自我注意力。我们的模型的有效性在姿势转移和虚拟的尝试任务上进行了定量和质量验证。
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Image and video synthesis has become a blooming topic in computer vision and machine learning communities along with the developments of deep generative models, due to its great academic and application value. Many researchers have been devoted to synthesizing high-fidelity human images as one of the most commonly seen object categories in daily lives, where a large number of studies are performed based on various deep generative models, task settings and applications. Thus, it is necessary to give a comprehensive overview on these variant methods on human image generation. In this paper, we divide human image generation techniques into three paradigms, i.e., data-driven methods, knowledge-guided methods and hybrid methods. For each route, the most representative models and the corresponding variants are presented, where the advantages and characteristics of different methods are summarized in terms of model architectures and input/output requirements. Besides, the main public human image datasets and evaluation metrics in the literature are also summarized. Furthermore, due to the wide application potentials, two typical downstream usages of synthesized human images are covered, i.e., data augmentation for person recognition tasks and virtual try-on for fashion customers. Finally, we discuss the challenges and potential directions of human image generation to shed light on future research.
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在本文中,我们专注于人物图像的生成,即在各种条件下产生人物图像,例如腐败的纹理或不同的姿势。在此任务中解决纹理遮挡和大构成错位,以前的作品只使用相应的区域的风格来推断遮挡区域并依靠点明智的对齐来重新组织上下文纹理信息,缺乏全局关联地区的能力代码并保留源的局部结构。为了解决这些问题,我们提出了一种Glocal框架,通过全球推理不同语义区域之间的样式相互关系来改善遮挡感知纹理估计,这也可以用于恢复纹理染色中的损坏图像。对于本地结构信息保存,我们进一步提取了源图像的本地结构,并通过本地结构传输在所生成的图像中重新获得。我们基准测试我们的方法,以充分表征其对Deepfashion DataSet的性能,并显示出突出我们方法的新颖性的广泛消融研究。
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我们提出了自由式 - 人体神经通话的头部合成系统。我们表明,具有稀疏3D面部标志的建模面孔足以实现最先进的生成性能,而无需依赖诸如3D可变形模型之类的强统计学先验。除了3D姿势和面部表情外,我们的方法还能够将目光从驾驶演员转移到源身份。我们的完整管道由三个组件组成:一个规范的3D密钥估计器,可回归3D姿势和与表达相关的变形,凝视估计网络和建立在Headgan架构上的生成器。我们进一步实验发电机的扩展,以使用注意机制可容纳几次学习,以防万一可用多个源图像。与最新的重演和运动转移模型相比,我们的系统实现了更高的照片真实性与优越的身份保护,同时提供明确的注视控制。
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基于图像的虚拟试验旨在综合一个穿给定服装的人的图像。为了解决任务,现有的方法会经过衣物项目,以适合该人的身体并生成穿着该物品的人的分割图,然后再将物品与人融合。但是,当扭曲和分割生成阶段在没有信息交换的情况下单独运行时,扭曲的衣服和分割图之间的未对准发生了,从而导致最终图像中的工件。信息断开还会导致在身体部位遮住的衣服区域附近过度翘曲,所谓的像素 - 刺式伪像。为了解决这些问题,我们提出了一个新颖的尝试条件发生器,作为两个阶段的统一模块(即扭曲和分割生成阶段)。条件生成器中新提出的特征融合块实现了信息交换,并且条件生成器不会造成任何未对准或像素 - 平方形工件。我们还介绍了歧视者的拒绝,从而滤除了不正确的细分图预测并确保虚拟试验框架的性能。高分辨率数据集上的实验表明,我们的模型成功处理了未对准和遮挡,并显着优于基线。代码可从https://github.com/sangyun884/hr-viton获得。
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Image animation consists of generating a video sequence so that an object in a source image is animated according to the motion of a driving video. Our framework addresses this problem without using any annotation or prior information about the specific object to animate. Once trained on a set of videos depicting objects of the same category (e.g. faces, human bodies), our method can be applied to any object of this class. To achieve this, we decouple appearance and motion information using a self-supervised formulation. To support complex motions, we use a representation consisting of a set of learned keypoints along with their local affine transformations. A generator network models occlusions arising during target motions and combines the appearance extracted from the source image and the motion derived from the driving video. Our framework scores best on diverse benchmarks and on a variety of object categories. Our source code is publicly available 1 .
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The neural radiance field (NeRF) has shown promising results in preserving the fine details of objects and scenes. However, unlike mesh-based representations, it remains an open problem to build dense correspondences across different NeRFs of the same category, which is essential in many downstream tasks. The main difficulties of this problem lie in the implicit nature of NeRF and the lack of ground-truth correspondence annotations. In this paper, we show it is possible to bypass these challenges by leveraging the rich semantics and structural priors encapsulated in a pre-trained NeRF-based GAN. Specifically, we exploit such priors from three aspects, namely 1) a dual deformation field that takes latent codes as global structural indicators, 2) a learning objective that regards generator features as geometric-aware local descriptors, and 3) a source of infinite object-specific NeRF samples. Our experiments demonstrate that such priors lead to 3D dense correspondence that is accurate, smooth, and robust. We also show that established dense correspondence across NeRFs can effectively enable many NeRF-based downstream applications such as texture transfer.
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由于发型的复杂性和美味,编辑发型是独一无二的,而且具有挑战性。尽管最近的方法显着改善了头发的细节,但是当源图像的姿势与目标头发图像的姿势大不相同时,这些模型通常会产生不良的输出,从而限制了其真实世界的应用。发型是一种姿势不变的发型转移模型,可以减轻这种限制,但在保留精致的头发质地方面仍然表现出不令人满意的质量。为了解决这些局限性,我们提出了配备潜在优化和新呈现的局部匹配损失的高性能姿势不变的发型转移模型。在stylegan2潜在空间中,我们首先探索目标头发的姿势对准的潜在代码,并根据本地风格匹配保留了详细纹理。然后,我们的模型对源的遮挡构成了对齐的目标头发的遮挡,并将两个图像混合在一起以产生最终输出。实验结果表明,我们的模型在在较大的姿势差异和保留局部发型纹理下转移发型方面具有优势。
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