Given a piece of text, a video clip and a reference audio, the movie dubbing (also known as visual voice clone V2C) task aims to generate speeches that match the speaker's emotion presented in the video using the desired speaker voice as reference. V2C is more challenging than conventional text-to-speech tasks as it additionally requires the generated speech to exactly match the varying emotions and speaking speed presented in the video. Unlike previous works, we propose a novel movie dubbing architecture to tackle these problems via hierarchical prosody modelling, which bridges the visual information to corresponding speech prosody from three aspects: lip, face, and scene. Specifically, we align lip movement to the speech duration, and convey facial expression to speech energy and pitch via attention mechanism based on valence and arousal representations inspired by recent psychology findings. Moreover, we design an emotion booster to capture the atmosphere from global video scenes. All these embeddings together are used to generate mel-spectrogram and then convert to speech waves via existing vocoder. Extensive experimental results on the Chem and V2C benchmark datasets demonstrate the favorable performance of the proposed method. The source code and trained models will be released to the public.

Multilingual end-to-end models have shown great improvement over monolingual systems. With the development of pre-training methods on speech, self-supervised multilingual speech representation learning like XLSR has shown success in improving the performance of multilingual automatic speech recognition (ASR). However, similar to the supervised learning, multilingual pre-training may also suffer from language interference and further affect the application of multilingual system. In this paper, we introduce several techniques for improving self-supervised multilingual pre-training by leveraging auxiliary language information, including the language adversarial training, language embedding and language adaptive training during the pre-training stage. We conduct experiments on a multilingual ASR task consisting of 16 languages. Our experimental results demonstrate 14.3% relative gain over the standard XLSR model, and 19.8% relative gain over the no pre-training multilingual model.

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.

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.

The role of mobile cameras increased dramatically over the past few years, leading to more and more research in automatic image quality enhancement and RAW photo processing. In this Mobile AI challenge, the target was to develop an efficient end-to-end AI-based image signal processing (ISP) pipeline replacing the standard mobile ISPs that can run on modern smartphone GPUs using TensorFlow Lite. The participants were provided with a large-scale Fujifilm UltraISP dataset consisting of thousands of paired photos captured with a normal mobile camera sensor and a professional 102MP medium-format FujiFilm GFX100 camera. The runtime of the resulting models was evaluated on the Snapdragon's 8 Gen 1 GPU that provides excellent acceleration results for the majority of common deep learning ops. The proposed solutions are compatible with all recent mobile GPUs, being able to process Full HD photos in less than 20-50 milliseconds while achieving high fidelity results. A detailed description of all models developed in this challenge is provided in this paper.

尽管已经开发了疫苗，并且国家疫苗接种率正在稳步提高，但2019年冠状病毒病（COVID-19）仍对世界各地的医疗保健系统产生负面影响。在当前阶段，从CT图像中自动分割肺部感染区域对于诊断和治疗COVID-19至关重要。得益于深度学习技术的发展，已经提出了一些针对肺部感染细分的深度学习解决方案。但是，由于分布分布，复杂的背景干扰和界限模糊，现有模型的准确性和完整性仍然不令人满意。为此，我们在本文中提出了一个边界引导的语义学习网络（BSNET）。一方面，结合顶级语义保存和渐进式语义集成的双分支语义增强模块旨在建模不同的高级特征之间的互补关系，从而促进产生更完整的分割结果。另一方面，提出了镜像对称边界引导模块，以以镜像对称方式准确检测病变区域的边界。公开可用数据集的实验表明，我们的BSNET优于现有的最新竞争对手，并实现了44 fps的实时推理速度。

训练后量化（PTQ）由于其在部署量化的神经网络方面的便利性而引起了越来越多的关注。 Founding是量化误差的主要来源，仅针对模型权重进行了优化，而激活仍然使用圆形至最终操作。在这项工作中，我们首次证明了精心选择的激活圆形方案可以提高最终准确性。为了应对激活舍入方案动态性的挑战，我们通过简单的功能适应圆形边框，以在推理阶段生成圆形方案。边界函数涵盖了重量误差，激活错误和传播误差的影响，以消除元素误差的偏差，从而进一步受益于模型的准确性。我们还使边境意识到全局错误，以更好地拟合不同的到达激活。最后，我们建议使用Aquant框架来学习边界功能。广泛的实验表明，与最先进的作品相比，Aquant可以通过可忽略不计的开销来取得明显的改进，并将Resnet-18的精度提高到2位重量和激活后训练后量化下的精度最高60.3 \％。

本文回顾了AIM 2022上压缩图像和视频超级分辨率的挑战。这项挑战包括两条曲目。轨道1的目标是压缩图像的超分辨率，轨迹〜2靶向压缩视频的超分辨率。在轨道1中，我们使用流行的数据集DIV2K作为培训，验证和测试集。在轨道2中，我们提出了LDV 3.0数据集，其中包含365个视频，包括LDV 2.0数据集（335个视频）和30个其他视频。在这一挑战中，有12支球队和2支球队分别提交了赛道1和赛道2的最终结果。所提出的方法和解决方案衡量了压缩图像和视频上超分辨率的最先进。提出的LDV 3.0数据集可在https://github.com/renyang-home/ldv_dataset上找到。此挑战的首页是在https://github.com/renyang-home/aim22_compresssr。

长期椎骨骨折严重影响了患者的生活质量，导致脑诊断，腰椎畸形甚至瘫痪。计算机断层扫描（CT）是在早期筛查该疾病的常见临床检查。但是，微弱的放射学表现和非特异性症状导致遗体诊断的高风险。特别是，对于深度学习模型和缺乏经验的医生而言，轻度骨折和正常对照很难区分。在本文中，我们认为增强微弱的断裂特征以鼓励阶层间的可分离性是提高准确性的关键。在此激励的情况下，我们提出了一个基于对比度学习的监督模型，以通过CT扫描估算Genent的椎骨骨折等级。作为一项辅助任务，受监督的对比学习在将其他人推开的同时缩小了同一类中特征的距离，从而增强了模型捕获椎骨骨折的微妙特征的能力。考虑到该领域缺乏数据集，我们构建了一个数据库，其中包括经验丰富的放射科医生注释的208个样本。我们的方法的特异性为99 \％，在二元分类中的敏感性为85％，在多分类中的Macio-F1为77 \％，表明对比度学习显着提高了椎骨骨折筛选的准确性，尤其是在轻度断裂和正常对照。我们的脱敏数据和代码将公开为社区提供。

近年来，几项作品采用了卷积神经网络（CNN）来诊断基于X射线图像或磁共振成像（MRI）的股骨头（AVNFH）的无血管坏死。但是，由于组织重叠，X射线图像很难为早期诊断提供细粒度。另一方面，MRI的成像时间很长，更昂贵，使其在大规模筛查中不切实际。计算机断层扫描（CT）显示了层的组织，图像速度更快，并且比MRI成本较小。但是，据我们所知，对于基于CT的AVNFH诊断没有工作。在这项工作中，我们收集并标记为AVNFH排名的大型数据集。此外，现有的端到端CNN仅产生分类结果，并且很难为诊断医生提供更多信息。为了解决这个问题，我们提出了结构正规化的专注网络（Sranet），该网络能够根据贴剂注意力在分类过程中突出坏死区域。 Sranet提取物在图像块中的特征，通过注意机制获得重量以汇总特征，并通过具有先验知识的结构正常化程序来限制它们以改善概括。 Sranet在我们的AVNFH-CT数据集上进行了评估。实验结果表明，Sranet优于CNN，用于AVNFH分类，此外，它可以定位病变并提供更多信息以帮助医生进行诊断。我们的代码在https://github.com/tomas-lilingfeng/sranet上公开。