A major goal of multimodal research is to improve machine understanding of images and text. Tasks include image captioning, text-to-image generation, and vision-language representation learning. So far, research has focused on the relationships between images and text. For example, captioning models attempt to understand the semantics of images which are then transformed into text. An important question is: which annotation reflects best a deep understanding of image content? Similarly, given a text, what is the best image that can present the semantics of the text? In this work, we argue that the best text or caption for a given image is the text which would generate the image which is the most similar to that image. Likewise, the best image for a given text is the image that results in the caption which is best aligned with the original text. To this end, we propose a unified framework that includes both a text-to-image generative model and an image-to-text generative model. Extensive experiments validate our approach.

用于图像文本生成任务的传统方法主要是分别解决自然双向生成任务，专注于设计任务特定的框架以提高所生成的样本的质量和保真度。最近，Vision-Language预训练模型大大提高了图像到文本生成任务的性能，但仍未开发出用于文本到图像综合任务的大规模预训练模型。在本文中，我们提出了一个具有变压器模型的双向图像文本生成的统一生成的预训练框架的Ernie-Vi​​lg。基于图像量化模型，我们将图像生成和文本生成标准为在文本/图像输入上调节的自回归生成任务。双向图像文本生成建模简化了视觉和语言的语义对齐。对于文本到图像生成过程，我们进一步提出了端到端的训练方法，共同学习视觉序列发生器和图像重建。为了探讨双向文本图像生成的大规模预培训景观，我们在大规模数据集中培训了100亿参数的Ernie-Vi​​lg模型，以145百万（中文）图像 - 文本对实现了达到的状态 - 文本到图像和图像到文本任务的最佳性能，以便在MS-Coco上获取7.9的FID，用于文本到图像合成以及用于图像标题的Coco-CN和AIC-ICC的最佳结果。

利用深度学习的最新进展，文本到图像生成模型目前具有吸引公众关注的优点。其中两个模型Dall-E 2和Imagen已经证明，可以从图像的简单文本描述中生成高度逼真的图像。基于一种称为扩散模型的新型图像生成方法，文本对图像模型可以生产许多不同类型的高分辨率图像，其中人类想象力是唯一的极限。但是，这些模型需要大量的计算资源来训练，并处理从互联网收集的大量数据集。此外，代码库和模型均未发布。因此，它可以防止AI社区尝试这些尖端模型，从而使其结果复制变得复杂，即使不是不可能。在本文中，我们的目标是首先回顾这些模型使用的不同方法和技术，然后提出我们自己的文本模型模型实施。高度基于DALL-E 2，我们引入了一些轻微的修改，以应对所引起的高计算成本。因此，我们有机会进行实验，以了解这些模型的能力，尤其是在低资源制度中。特别是，我们提供了比Dall-e 2的作者（包括消融研究）更深入的分析。此外，扩散模型使用所谓的指导方法来帮助生成过程。我们引入了一种新的指导方法，该方法可以与其他指导方法一起使用，以提高图像质量。最后，我们的模型产生的图像质量相当好，而不必维持最先进的文本对图像模型的重大培训成本。

连接视觉和语言在生成智能中起着重要作用。因此，已经致力于图像标题的大型研究工作，即用句法和语义有意义的句子描述图像。从2015年开始，该任务通常通过由Visual Encoder组成的管道和文本生成的语言模型来解决任务。在这些年来，两种组件通过对象区域，属性，介绍多模态连接，完全关注方法和伯特早期融合策略的利用而显着发展。但是，无论令人印象深刻的结果，图像标题的研究还没有达到结论性答案。这项工作旨在提供图像标题方法的全面概述，从视觉编码和文本生成到培训策略，数据集和评估度量。在这方面，我们量化地比较了许多相关的最先进的方法来确定架构和培训策略中最有影响力的技术创新。此外，讨论了问题的许多变体及其开放挑战。这项工作的最终目标是作为理解现有文献的工具，并突出显示计算机视觉和自然语言处理的研究领域的未来方向可以找到最佳的协同作用。

Image captioning is one of the straightforward tasks that can take advantage of large-scale web-crawled data which provides rich knowledge about the visual world for a captioning model. However, since web-crawled data contains image-text pairs that are aligned at different levels, the inherent noises (e.g., misaligned pairs) make it difficult to learn a precise captioning model. While the filtering strategy can effectively remove noisy data, however, it leads to a decrease in learnable knowledge and sometimes brings about a new problem of data deficiency. To take the best of both worlds, we propose a noise-aware learning framework, which learns rich knowledge from the whole web-crawled data while being less affected by the noises. This is achieved by the proposed quality controllable model, which is learned using alignment levels of the image-text pairs as an additional control signal during training. The alignment-conditioned training allows the model to generate high-quality captions of well-aligned by simply setting the control signal to desired alignment level at inference time. Through in-depth analysis, we show that our controllable captioning model is effective in handling noise. In addition, with two tasks of zero-shot captioning and text-to-image retrieval using generated captions (i.e., self-retrieval), we also demonstrate our model can produce high-quality captions in terms of descriptiveness and distinctiveness. Code is available at \url{https://github.com/kakaobrain/noc}.

最近的文本到图像匹配模型对大型图像和句子的大公司进行了对比学习。虽然这些模型可以提供用于匹配和随后的零拍任务的强大分数，但它们不能给出给定图像的标题。在这项工作中，我们重新利用这些模型来生成在推理时间的图像时生成描述性文本，而无需进一步的训练或调整步骤。这是通过将具有大语言模型的视觉语义模型组合，从两种网络级模型中的知识中获益。由受监督标题方法获得的标题的限制性较小。此外，作为零射击学习方法，它非常灵活，我们展示了执行图像算法的能力，其中输入可以是图像或文本，输出是句子。这使得新颖的高级视觉能力，例如比较两个图像或解决视觉类比测试。

Evaluating and comparing text-to-image models is a challenging problem. Significant advances in the field have recently been made, piquing interest of various industrial sectors. As a consequence, a gold standard in the field should cover a variety of tasks and application contexts. In this paper a novel evaluation approach is experimented, on the basis of: (i) a curated data set, made by high-quality royalty-free image-text pairs, divided into ten categories; (ii) a quantitative metric, the CLIP-score, (iii) a human evaluation task to distinguish, for a given text, the real and the generated images. The proposed method has been applied to the most recent models, i.e., DALLE2, Latent Diffusion, Stable Diffusion, GLIDE and Craiyon. Early experimental results show that the accuracy of the human judgement is fully coherent with the CLIP-score. The dataset has been made available to the public.

我们介绍了一种零拍的视频字幕方法，该方法采用了两个冷冻网络：GPT-2语言模型和剪辑图像文本匹配模型。匹配分数用于引导语言模型生成一个句子，该句子的平均匹配分数高于视频帧的一个子集。与零拍图像字幕方法不同，我们的工作立即考虑整个句子。这是通过在生成过程中优化从头开始的一部分，通过在提示中修改所有其他令牌的表示，并通过迭代重复该过程，逐渐提高生成句子的特殊性和全面性来实现。我们的实验表明，生成的字幕是连贯的，并显示了广泛的现实知识。我们的代码可在以下网址找到：https：//github.com/yoadtew/zero-shot-video-to-text

远远超出了学习自然语言的远程相互作用，变形金刚正成为许多愿景任务的遗弃标准，具有其力量和爬钢丝。特别是在图像和文本之间的跨模型任务中，向量量化变化自动码器（VQ-VAE）被广泛用于使原始RGB图像成为一系列特征向量。为了更好地利用图像和文本之间的相关性，我们提出了一种新颖的架构，该架构包括用于文本到图像和图像到文本的特征增强的变形Autiachoder（Augvae）和双向自动回归变压器（Biart）一代。我们的Augvae在ImageNet1K验证集上显示了最先进的重建性能，以及野外未经看出图像的鲁棒性。与其他模型不同，BIART可以将图像（或文本）区分为条件参考和生成目标。 L-VERSE可以直接用于图像到文本或文本到图像生成任务，而无需任何FineTuning或额外的对象检测框架。在定量和定性实验中，L-VESERS在MS-Coco字幕上的图像到文本和文本到图像生成中，对先前的方法进行了令人印象深刻的结果。我们还评估了L-Verse架构对概念标题的可扩展性，并呈现了一般域的双向视觉语言表示学习的初始结果。代码可用：https://github.com/tgisaturday/l-verse

Many high-level skills that are required for computer vision tasks, such as parsing questions, comparing and contrasting semantics, and writing descriptions, are also required in other domains such as natural language processing. In this paper, we ask whether this makes it possible to learn those skills from text data and then use them to complete vision tasks without ever training on visual training data. Key to our approach is exploiting the joint embedding space of contrastively trained vision and language encoders. In practice, there can be systematic differences between embedding spaces for different modalities in contrastive models, and we analyze how these differences affect our approach and study a variety of strategies to mitigate this concern. We produce models using only text training data on three tasks: image captioning, visual entailment and visual question answering, and evaluate them on standard benchmarks using images. We find that this kind of transfer is possible and results in only a small drop in performance relative to models trained on images. We also showcase a variety of stylistic image captioning models that were trained using no image data and no human-curated language data, but instead text data from books, the web, or language models.

Multimodal image-text models have shown remarkable performance in the past few years. However, evaluating their robustness against distribution shifts is crucial before adopting them in real-world applications. In this paper, we investigate the robustness of 9 popular open-sourced image-text models under common perturbations on five tasks (image-text retrieval, visual reasoning, visual entailment, image captioning, and text-to-image generation). In particular, we propose several new multimodal robustness benchmarks by applying 17 image perturbation and 16 text perturbation techniques on top of existing datasets. We observe that multimodal models are not robust to image and text perturbations, especially to image perturbations. Among the tested perturbation methods, character-level perturbations constitute the most severe distribution shift for text, and zoom blur is the most severe shift for image data. We also introduce two new robustness metrics (MMI and MOR) for proper evaluations of multimodal models. We hope our extensive study sheds light on new directions for the development of robust multimodal models.

We introduce M-VADER: a diffusion model (DM) for image generation where the output can be specified using arbitrary combinations of images and text. We show how M-VADER enables the generation of images specified using combinations of image and text, and combinations of multiple images. Previously, a number of successful DM image generation algorithms have been introduced that make it possible to specify the output image using a text prompt. Inspired by the success of those models, and led by the notion that language was already developed to describe the elements of visual contexts that humans find most important, we introduce an embedding model closely related to a vision-language model. Specifically, we introduce the embedding model S-MAGMA: a 13 billion parameter multimodal decoder combining components from an autoregressive vision-language model MAGMA and biases finetuned for semantic search.

我们提出了快速的文本2stylegan，这是一种自然语言界面，可适应预先训练的甘体，以实现文本引导的人脸合成。利用对比性语言图像预训练（剪辑）的最新进展，在培训过程中不需要文本数据。Fast Text2Stylegan被配制为条件变异自动编码器（CVAE），可在测试时为生成的图像提供额外的控制和多样性。我们的模型在遇到新的文本提示时不需要重新训练或微调剂或剪辑。与先前的工作相反，我们不依赖于测试时间的优化，这使我们的方法数量级比先前的工作快。从经验上讲，在FFHQ数据集上，我们的方法提供了与先前的工作相比，自然语言描述中具有不同详细程度的自然语言描述中的图像。

文本对图像模型提供了前所未有的自由，可以通过自然语言指导创作。然而，尚不清楚如何行使这种自由以生成特定独特概念，修改其外观或以新角色和新颖场景构成它们的图像。换句话说，我们问：我们如何使用语言指导的模型将猫变成绘画，或者想象基于我们喜欢的玩具的新产品？在这里，我们提出了一种简单的方法，可以允许这种创造性自由。我们仅使用3-5个用户提供的概念（例如对象或样式）的图像，我们学会通过在冷冻文本到图像模型的嵌入空间中通过新的“单词”表示它。这些“单词”可以组成自然语言句子，以直观的方式指导个性化的创作。值得注意的是，我们发现有证据表明单词嵌入足以捕获独特而多样的概念。我们将我们的方法比较了各种基线，并证明它可以更忠实地描绘出一系列应用程序和任务的概念。我们的代码，数据和新单词将在以下网址提供：https：//textual-inversion.github.io

Large-scale diffusion models have achieved state-of-the-art results on text-to-image synthesis (T2I) tasks. Despite their ability to generate high-quality yet creative images, we observe that attribution-binding and compositional capabilities are still considered major challenging issues, especially when involving multiple objects. In this work, we improve the compositional skills of T2I models, specifically more accurate attribute binding and better image compositions. To do this, we incorporate linguistic structures with the diffusion guidance process based on the controllable properties of manipulating cross-attention layers in diffusion-based T2I models. We observe that keys and values in cross-attention layers have strong semantic meanings associated with object layouts and content. Therefore, we can better preserve the compositional semantics in the generated image by manipulating the cross-attention representations based on linguistic insights. Built upon Stable Diffusion, a SOTA T2I model, our structured cross-attention design is efficient that requires no additional training samples. We achieve better compositional skills in qualitative and quantitative results, leading to a 5-8% advantage in head-to-head user comparison studies. Lastly, we conduct an in-depth analysis to reveal potential causes of incorrect image compositions and justify the properties of cross-attention layers in the generation process.

图像字幕模型通常是根据人体注释的地面真实字幕训练的，该字幕可能会产生准确但通用的字幕。为了提高字幕模型的独特性，我们首先提出了一系列使用大规模视觉语言预训练模型剪辑来评估标题的独特性。然后，我们提出了一种简单有效的训练策略，该策略通过在相似图像组中进行比较来训练模型。我们对各种现有模型进行了广泛的实验，以证明我们的策略的广泛适用性以及基于公制的结果与人类评估的一致性。通过将最佳模型的性能与现有的最新模型进行比较，我们声称我们的模型实现了针对独特性目标的新最先进的。

我们介绍了自回归文本到图像（Parti）模型的途径，该模型生成高保真的影像图像并支持涉及复杂组成和世界知识的内容丰富的合成。 Parti将文本对图像生成视为类似于机器翻译的序列到序列建模问题，图像令牌的序列是目标输出，而不是其他语言的文本令牌。这种策略自然可以利用大型语言模型的先前工作，通过扩展数据和模型尺寸，能力和性能的持续进展。我们的方法很简单：首先，Parti使用基于变压器的图像令牌VIT-VQGAN将图像编码为离散令牌的序列。其次，我们通过将编码器二次变压器模型缩放到20B参数来实现一致的质量改进，其新的最新零弹药FID得分为7.23，而MS-Coco的FIDED得分为3.22。我们对本地化叙述以及党的详细分析（P2），这是1600多个英语提示的新的整体基准，证明了Parti在各种类别和难度方面的有效性。我们还探索并突出了我们的模型的局限性，以定义和体现关注重点领域以进一步改进。有关高分辨率图像，请参见https://parti.research.google/。

Recently, vector quantized autoregressive (VQ-AR) models have shown remarkable results in text-to-image synthesis by equally predicting discrete image tokens from the top left to bottom right in the latent space. Although the simple generative process surprisingly works well, is this the best way to generate the image? For instance, human creation is more inclined to the outline-to-fine of an image, while VQ-AR models themselves do not consider any relative importance of each component. In this paper, we present a progressive denoising model for high-fidelity text-to-image image generation. The proposed method takes effect by creating new image tokens from coarse to fine based on the existing context in a parallel manner and this procedure is recursively applied until an image sequence is completed. The resulting coarse-to-fine hierarchy makes the image generation process intuitive and interpretable. Extensive experiments demonstrate that the progressive model produces significantly better results when compared with the previous VQ-AR method in FID score across a wide variety of categories and aspects. Moreover, the text-to-image generation time of traditional AR increases linearly with the output image resolution and hence is quite time-consuming even for normal-size images. In contrast, our approach allows achieving a better trade-off between generation quality and speed.

文本到图像合成的最新进展导致了较大的经过验证的变压器，具有出色的能力，可以从给定文本产生可视化。但是，这些模型不适合专门的任务，例如故事可视化，该任务要求代理商制作一系列图像，给定相应的字幕序列，形成叙述。此外，我们发现故事可视化任务无法适应新叙事中看不见的情节和角色的概括。因此，我们首先提出了故事延续的任务，其中生成的视觉故事是在源图像上进行的，从而可以更好地对具有新角色的叙述进行更好的概括。然后，我们使用特定于（a）顺序图像生成的任务特定模块和（b）从初始帧复制相关元素的任务特定模块来增强或“复古”文本对图像合成模型。然后，我们探讨了预训练模型的全模型芬太尼以及对参数适应的及时调整。我们在两个现有数据集（PororoSV和FlintStonessV）上评估了我们的方法storydall-e，并介绍了从视频吸引数据集收集的新数据集DIDEMOSV。我们还基于生成的对抗网络（GAN）开发了一个模型故事游戏，以进行故事的延续，并将其与StoryDall-E模型进行比较，以展示我们方法的优势。我们表明，我们的复古拟合方法优于基于GAN的模型，用于故事延续，并促进从源图像中复制视觉元素，从而改善了生成的视觉故事中的连续性。最后，我们的分析表明，经过审计的变压器努力理解包含几个角色的叙述。总体而言，我们的工作表明，可以验证的文本对图像合成模型可以适应复杂和低资源的任务，例如故事延续。

The recently developed discrete diffusion models perform extraordinarily well in the text-to-image task, showing significant promise for handling the multi-modality signals. In this work, we harness these traits and present a unified multimodal generation model that can conduct both the "modality translation" and "multi-modality generation" tasks using a single model, performing text-based, image-based, and even vision-language simultaneous generation. Specifically, we unify the discrete diffusion process for multimodal signals by proposing a unified transition matrix. Moreover, we design a mutual attention module with fused embedding layer and a unified objective function to emphasise the inter-modal linkages, which are vital for multi-modality generation. Extensive experiments indicate that our proposed method can perform comparably to the state-of-the-art solutions in various generation tasks.