Video super-resolution (VSR) aiming to reconstruct a high-resolution (HR) video from its low-resolution (LR) counterpart has made tremendous progress in recent years. However, it remains challenging to deploy existing VSR methods to real-world data with complex degradations. On the one hand, there are few well-aligned real-world VSR datasets, especially with large super-resolution scale factors, which limits the development of real-world VSR tasks. On the other hand, alignment algorithms in existing VSR methods perform poorly for real-world videos, leading to unsatisfactory results. As an attempt to address the aforementioned issues, we build a real-world 4 VSR dataset, namely MVSR4$\times$, where low- and high-resolution videos are captured with different focal length lenses of a smartphone, respectively. Moreover, we propose an effective alignment method for real-world VSR, namely EAVSR. EAVSR takes the proposed multi-layer adaptive spatial transform network (MultiAdaSTN) to refine the offsets provided by the pre-trained optical flow estimation network. Experimental results on RealVSR and MVSR4$\times$ datasets show the effectiveness and practicality of our method, and we achieve state-of-the-art performance in real-world VSR task. The dataset and code will be publicly available.

Arbitrary style transfer (AST) transfers arbitrary artistic styles onto content images. Despite the recent rapid progress, existing AST methods are either incapable or too slow to run at ultra-resolutions (e.g., 4K) with limited resources, which heavily hinders their further applications. In this paper, we tackle this dilemma by learning a straightforward and lightweight model, dubbed MicroAST. The key insight is to completely abandon the use of cumbersome pre-trained Deep Convolutional Neural Networks (e.g., VGG) at inference. Instead, we design two micro encoders (content and style encoders) and one micro decoder for style transfer. The content encoder aims at extracting the main structure of the content image. The style encoder, coupled with a modulator, encodes the style image into learnable dual-modulation signals that modulate both intermediate features and convolutional filters of the decoder, thus injecting more sophisticated and flexible style signals to guide the stylizations. In addition, to boost the ability of the style encoder to extract more distinct and representative style signals, we also introduce a new style signal contrastive loss in our model. Compared to the state of the art, our MicroAST not only produces visually superior results but also is 5-73 times smaller and 6-18 times faster, for the first time enabling super-fast (about 0.5 seconds) AST at 4K ultra-resolutions. Code is available at https://github.com/EndyWon/MicroAST.

最近的研究表明，通用风格转移的成功取得了巨大的成功，将任意视觉样式转移到内容图像中。但是，现有的方法遭受了审美的非现实主义问题，该问题引入了不和谐的模式和明显的人工制品，从而使结果很容易从真实的绘画中发现。为了解决这一限制，我们提出了一种新颖的美学增强风格转移方法，可以在美学上为任意风格产生更现实和令人愉悦的结果。具体而言，我们的方法引入了一种审美歧视者，以从大量的艺术家创造的绘画中学习通用的人类自愿美学特征。然后，合并了美学特征，以通过新颖的美学感知样式（AESSA）模块来增强样式转移过程。这样的AESSA模块使我们的Aesust能够根据样式图像的全局美学通道分布和内容图像的局部语义空间分布有效而灵活地集成样式模式。此外，我们还开发了一种新的两阶段转移培训策略，并通过两种审美正规化来更有效地训练我们的模型，从而进一步改善风格化的性能。广泛的实验和用户研究表明，我们的方法比艺术的状态综合了美学上更加和谐和现实的结果，从而大大缩小了真正的艺术家创造的绘画的差异。我们的代码可在https://github.com/endywon/aesust上找到。

由于简单但有效的训练机制和出色的图像产生质量，生成的对抗网络（GAN）引起了极大的关注。具有生成照片现实的高分辨率（例如$ 1024 \ times1024 $）的能力，最近的GAN模型已大大缩小了生成的图像与真实图像之间的差距。因此，许多最近的作品表明，通过利用良好的潜在空间和博学的gan先验来利用预先训练的GAN模型的新兴兴趣。在本文中，我们简要回顾了从三个方面利用预先培训的大规模GAN模型的最新进展，即1）大规模生成对抗网络的培训，2）探索和理解预训练的GAN模型，以及预先培训的GAN模型，以及3）利用这些模型进行后续任务，例如图像恢复和编辑。有关相关方法和存储库的更多信息，请访问https://github.com/csmliu/pretretaining-gans。

通常观察到的最先进的自然语言技术问题，例如亚马逊alexa和苹果公司，是他们的服务不会因语言障碍而扩展到大多数发展中国家的公民。这种种群因其语言缺乏可用资源来构建NLP产品。本文介绍了allwoz，一个多语言多域面向任务的客户服务对话框数据集覆盖八种语言：英语，普通话，韩语，越南语，印地语，法国，葡萄牙语和泰国。此外，我们通过使用mt5与元学习来创建多语言数据集的基准。

会话推荐系统（CRS）通过推断用户首选项从对话历史推断用户偏好，提供准确的建议，并生成适当的响应。以前的CRSS使用基于知识图（kg）的推荐模块，并将kg与语言模型集成为响应生成。虽然基于KG的方法证明有效，但仍有两个问题仍有待解决。首先，基于KG的方法忽略会话环境中的信息，但仅依赖于实体关系和单词包来推荐项目。其次，它需要实质性的工程努力来维持模型特定的关系的KG，从而导致灵活性更少。在本文中，我们提出了一种简单而有效的架构，包括预先接受了训练的语言模型（PLM）和项目元数据编码器。编码器学会将项目元数据映射到嵌入式，该嵌入式可以反映对话框上下文中的语义信息。然后，PLM将语义对齐的项目嵌入式与对话上下文一起消耗，以生成高质量的建议和响应。我们的模型通过直接将每个项目转换为嵌入来降低工程复杂性而不是建模实体关系。基准数据集重拨的实验结果表明，我们的模型在两种推荐和响应生成任务上获得最先进的结果。

在本文中，我们介绍了纹理改革器，一个快速和通用的神经基础框架，用于使用用户指定的指导进行交互式纹理传输。挑战在三个方面：1）任务的多样性，2）引导图的简单性，以及3）执行效率。为了解决这些挑战，我们的主要思想是使用由i）全球视图结构对准阶段，ii）局部视图纹理细化阶段和III）的新的前馈多视图和多级合成程序。效果增强阶段用相干结构合成高质量结果，并以粗略的方式进行细纹细节。此外，我们还介绍了一种新颖的无学习视图特定的纹理改革（VSTR）操作，具有新的语义地图指导策略，以实现更准确的语义引导和结构保存的纹理传输。关于各种应用场景的实验结果展示了我们框架的有效性和优越性。并与最先进的交互式纹理转移算法相比，它不仅可以实现更高的质量结果，而且更加显着，也是更快的2-5个数量级。代码可在https://github.com/endywon/texture --reformer中找到。

While deep convolutional neural networks (CNNs) have achieved impressive success in image denoising with additive white Gaussian noise (AWGN), their performance remains limited on real-world noisy photographs. The main reason is that their learned models are easy to overfit on the simplified AWGN model which deviates severely from the complicated real-world noise model. In order to improve the generalization ability of deep CNN denoisers, we suggest training a convolutional blind denoising network (CBDNet) with more realistic noise model and real-world noisy-clean image pairs. On the one hand, both signaldependent noise and in-camera signal processing pipeline is considered to synthesize realistic noisy images. On the other hand, real-world noisy photographs and their nearly noise-free counterparts are also included to train our CBD-Net. To further provide an interactive strategy to rectify denoising result conveniently, a noise estimation subnetwork with asymmetric learning to suppress under-estimation of noise level is embedded into CBDNet. Extensive experimental results on three datasets of real-world noisy photographs clearly demonstrate the superior performance of CBDNet over state-of-the-arts in terms of quantitative metrics and visual quality. The code has been made available at https://github.com/GuoShi28/CBDNet.

Recent years have witnessed the unprecedented success of deep convolutional neural networks (CNNs) in single image super-resolution (SISR). However, existing CNN-based SISR methods mostly assume that a low-resolution (LR) image is bicubicly downsampled from a high-resolution (HR) image, thus inevitably giving rise to poor performance when the true degradation does not follow this assumption. Moreover, they lack scalability in learning a single model to nonblindly deal with multiple degradations. To address these issues, we propose a general framework with dimensionality stretching strategy that enables a single convolutional super-resolution network to take two key factors of the SISR degradation process, i.e., blur kernel and noise level, as input. Consequently, the super-resolver can handle multiple and even spatially variant degradations, which significantly improves the practicability. Extensive experimental results on synthetic and real LR images show that the proposed convolutional super-resolution network not only can produce favorable results on multiple degradations but also is computationally efficient, providing a highly effective and scalable solution to practical SISR applications.

Model-based optimization methods and discriminative learning methods have been the two dominant strategies for solving various inverse problems in low-level vision. Typically, those two kinds of methods have their respective merits and drawbacks, e.g., model-based optimization methods are flexible for handling different inverse problems but are usually time-consuming with sophisticated priors for the purpose of good performance; in the meanwhile, discriminative learning methods have fast testing speed but their application range is greatly restricted by the specialized task. Recent works have revealed that, with the aid of variable splitting techniques, denoiser prior can be plugged in as a modular part of model-based optimization methods to solve other inverse problems (e.g., deblurring). Such an integration induces considerable advantage when the denoiser is obtained via discriminative learning. However, the study of integration with fast discriminative denoiser prior is still lacking. To this end, this paper aims to train a set of fast and effective CNN (convolutional neural network) denoisers and integrate them into model-based optimization method to solve other inverse problems. Experimental results demonstrate that the learned set of denoisers not only achieve promising Gaussian denoising results but also can be used as prior to deliver good performance for various low-level vision applications.