基于遥感图像的道路检测对于智能交通管理至关重要。主流道路检测方法的性能主要取决于其提取的特征,它们的丰富性和稳健性可以通过融合不同类型和跨层连接的特征来增强。但是,现有主流模型框架中的功能通常在同一层中通过单任务训练相似,而传统的跨层融合方式太简单了,无法获得有效的效果,因此除了串联和添加外,更复杂的融合方式值得探索。针对上述缺陷,我们提出了一个双重任务网络(DTNET),用于道路检测和跨层图融合模块(CGM):DTNET分别由两个平行分支组成,分别用于道路区域和边缘检测,同时增强了特征通过我们设计的特征桥模块(FBM)在两个分支之间融合特征的多样性。 CGM通过复杂的特征流图改善了跨层融合效果,并评估了四个图模式。三个公共数据集的实验结果表明,我们的方法有效地改善了最终检测结果。
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Semantic segmentation of UAV aerial remote sensing images provides a more efficient and convenient surveying and mapping method for traditional surveying and mapping. In order to make the model lightweight and improve a certain accuracy, this research developed a new lightweight and efficient network for the extraction of ground features from UAV aerial remote sensing images, called LDMCNet. Meanwhile, this research develops a powerful lightweight backbone network for the proposed semantic segmentation model. It is called LDCNet, and it is hoped that it can become the backbone network of a new generation of lightweight semantic segmentation algorithms. The proposed model uses dual multi-scale context modules, namely the Atrous Space Pyramid Pooling module (ASPP) and the Object Context Representation module (OCR). In addition, this research constructs a private dataset for semantic segmentation of aerial remote sensing images from drones. This data set contains 2431 training sets, 945 validation sets, and 475 test sets. The proposed model performs well on this dataset, with only 1.4M parameters and 5.48G floating-point operations (FLOPs), achieving an average intersection-over-union ratio (mIoU) of 71.12%. 7.88% higher than the baseline model. In order to verify the effectiveness of the proposed model, training on the public datasets "LoveDA" and "CITY-OSM" also achieved excellent results, achieving mIoU of 65.27% and 74.39%, respectively.
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人行道表面数据的获取和评估在路面条件评估中起着至关重要的作用。在本文中,提出了一个称为RHA-NET的自动路面裂纹分割的有效端到端网络,以提高路面裂纹分割精度。 RHA-NET是通过将残留块(重阻)和混合注意块集成到编码器架构结构中来构建的。这些重组用于提高RHA-NET提取高级抽象特征的能力。混合注意块旨在融合低级功能和高级功能,以帮助模型专注于正确的频道和裂纹区域,从而提高RHA-NET的功能表现能力。构建并用于训练和评估所提出的模型的图像数据集,其中包含由自设计的移动机器人收集的789个路面裂纹图像。与其他最先进的网络相比,所提出的模型在全面的消融研究中验证了添加残留块和混合注意机制的功能。此外,通过引入深度可分离卷积生成的模型的轻加权版本可以更好地实现性能和更快的处理速度,而U-NET参数数量的1/30。开发的系统可以在嵌入式设备Jetson TX2(25 fps)上实时划分路面裂纹。实时实验拍摄的视频将在https://youtu.be/3xiogk0fig4上发布。
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玻璃在现实世界中非常普遍。受玻璃区域的不确定性以及玻璃背后的各种复杂场景的影响,玻璃的存在对许多计算机视觉任务构成了严重的挑战,从而使玻璃分割成为重要的计算机视觉任务。玻璃没有自己的视觉外观,而只能传输/反映其周围环境的外观,从而与其他常见对象根本不同。为了解决此类具有挑战性的任务,现有方法通常会探索并结合深网络中不同特征级别的有用线索。由于存在级别不同的特征之间的特征差距,即,深层特征嵌入了更多高级语义,并且更好地定位目标对象,而浅层特征具有更大的空间尺寸,并保持更丰富,更详细的低级信息,因此,将这些特征融合到天真的融合将导致亚最佳溶液。在本文中,我们将有效的特征融合到两个步骤中,以朝着精确的玻璃分割。首先,我们试图通过开发可区分性增强(DE)模块来弥合不同级别特征之间的特征差距,该模块使特定于级别的特征成为更具歧视性的表示,从而减轻了融合不兼容的特征。其次,我们设计了一个基于焦点和探索的融合(FEBF)模块,以通过突出显示常见并探索级别差异特征之间的差异,从而在融合过程中丰富挖掘有用的信息。
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语义分割是自主车辆了解周围场景的关键技术。当代模型的吸引力表现通常以牺牲重计算和冗长的推理时间为代价,这对于自行车来说是无法忍受的。在低分辨率图像上使用轻量级架构(编码器 - 解码器或双路)或推理,最近的方法实现了非常快的场景解析,即使在单个1080TI GPU上以100多件FPS运行。然而,这些实时方法与基于扩张骨架的模型之间的性能仍有显着差距。为了解决这个问题,我们提出了一家专门为实时语义细分设计的高效底座。所提出的深层双分辨率网络(DDRNET)由两个深部分支组成,之间进行多个双边融合。此外,我们设计了一个名为Deep聚合金字塔池(DAPPM)的新上下文信息提取器,以基于低分辨率特征映射放大有效的接收字段和熔丝多尺度上下文。我们的方法在城市景观和Camvid数据集上的准确性和速度之间实现了新的最先进的权衡。特别是,在单一的2080Ti GPU上,DDRNET-23-Slim在Camvid测试组上的Citycapes试验组102 FPS上的102 FPS,74.7%Miou。通过广泛使用的测试增强,我们的方法优于最先进的模型,需要计算得多。 CODES和培训的型号在线提供。
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由于不规则的形状,正常和感染组织之间的各种尺寸和无法区分的边界,仍然是一种具有挑战性的任务,可以准确地在CT图像上进行Covid-19的感染病变。在本文中,提出了一种新的分段方案,用于通过增强基于编码器 - 解码器架构的不同级别的监督信息和融合多尺度特征映射来感染Covid-19。为此,提出了深入的协作监督(共同监督)计划,以指导网络学习边缘和语义的特征。更具体地,首先设计边缘监控模块(ESM),以通过将边缘监督信息结合到初始阶段的下采样的初始阶段来突出显示低电平边界特征。同时,提出了一种辅助语义监督模块(ASSM)来加强通过将掩码监督信息集成到稍后阶段来加强高电平语义信息。然后,通过使用注意机制来扩展高级和低电平特征映射之间的语义间隙,开发了一种注意融合模块(AFM)以融合不同级别的多个规模特征图。最后,在四个各种Covid-19 CT数据集上证明了所提出的方案的有效性。结果表明,提出的三个模块都是有希望的。基于基线(RESUNT),单独使用ESM,ASSM或AFM可以分别将骰子度量增加1.12 \%,1.95 \%,1.63 \%,而在我们的数据集中,通过将三个模型结合在一起可以上升3.97 \% 。与各个数据集的现有方法相比,所提出的方法可以在某些主要指标中获得更好的分段性能,并可实现最佳的泛化和全面的性能。
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编码器 - 解码器模型已广泛用于RGBD语义分割,并且大多数通过双流网络设计。通常,共同推理RGBD的颜色和几何信息是有益的对语义分割。然而,大多数现有方法都无法全面地利用编码器和解码器中的多模式信息。在本文中,我们提出了一种用于RGBD语义细分的新型关注的双重监督解码器。在编码器中,我们设计一个简单但有效的关注的多模式融合模块,以提取和保险丝深度多级成对的互补信息。要了解更强大的深度表示和丰富的多模态信息,我们介绍了一个双分支解码器,以有效利用不同任务的相关性和互补线。在Nyudv2和Sun-RGBD数据集上的广泛实验表明,我们的方法达到了最先进的方法的卓越性能。
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土地覆盖分类是一项多级分割任务,将每个像素分类为地球表面的某些天然或人为类别,例如水,土壤,自然植被,农作物和人类基础设施。受硬件计算资源和内存能力的限制,大多数现有研究通过将它们放置或将其裁剪成小于512*512像素的小斑块来预处理原始遥感图像,然后再将它们发送到深神经网络。然而,下调图像会导致空间细节损失,使小细分市场难以区分,并逆转了数十年来努力获得的空间分辨率进度。将图像裁剪成小斑块会导致远程上下文信息的丢失,并将预测的结果恢复为原始大小会带来额外的延迟。为了响应上述弱点,我们提出了称为Mkanet的有效的轻巧的语义分割网络。 Mkanet针对顶视图高分辨率遥感图像的特征,利用共享内核同时且同样处理不一致的尺度的地面段,还采用平行且浅层的体系结构来提高推理速度和友好的支持速度和友好的支持图像贴片,超过10倍。为了增强边界和小段歧视,我们还提出了一种捕获类别杂质区域的方法,利用边界信息并对边界和小部分错误判断施加额外的惩罚。广泛实验的视觉解释和定量指标都表明,Mkanet在两个土地覆盖分类数据集上获得了最先进的准确性,并且比其他竞争性轻量级网络快2倍。所有这些优点突出了Mkanet在实际应用中的潜力。
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伪装的对象检测(COD)旨在识别自然场景中隐藏自己的物体。准确的COD遭受了许多与低边界对比度有关的挑战,并且对象出现(例如对象大小和形状)的较大变化。为了应对这些挑战,我们提出了一种新颖的背景感知跨层次融合网络(C2F-net),该网络融合了上下文感知的跨级特征,以准确识别伪装的对象。具体而言,我们通过注意力诱导的跨融合模块(ACFM)来计算来自多级特征的内容丰富的注意系数,该模块(ACFM)进一步在注意系数的指导下进一步集成了特征。然后,我们提出了一个双分支全局上下文模块(DGCM),以通过利用丰富的全球上下文信息来完善内容丰富的功能表示的融合功能。多个ACFM和DGCM以级联的方式集成,以产生高级特征的粗略预测。粗糙的预测充当了注意力图,以完善低级特征,然后再将其传递到我们的伪装推断模块(CIM)以生成最终预测。我们对三个广泛使用的基准数据集进行了广泛的实验,并将C2F-NET与最新模型(SOTA)模型进行比较。结果表明,C2F-NET是一种有效的COD模型,并且表现出明显的SOTA模型。此外,对息肉细分数据集的评估证明了我们在COD下游应用程序中C2F-NET的有希望的潜力。我们的代码可在以下网址公开获取:https://github.com/ben57882/c2fnet-tscvt。
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Image manipulation localization aims at distinguishing forged regions from the whole test image. Although many outstanding prior arts have been proposed for this task, there are still two issues that need to be further studied: 1) how to fuse diverse types of features with forgery clues; 2) how to progressively integrate multistage features for better localization performance. In this paper, we propose a tripartite progressive integration network (TriPINet) for end-to-end image manipulation localization. First, we extract both visual perception information, e.g., RGB input images, and visual imperceptible features, e.g., frequency and noise traces for forensic feature learning. Second, we develop a guided cross-modality dual-attention (gCMDA) module to fuse different types of forged clues. Third, we design a set of progressive integration squeeze-and-excitation (PI-SE) modules to improve localization performance by appropriately incorporating multiscale features in the decoder. Extensive experiments are conducted to compare our method with state-of-the-art image forensics approaches. The proposed TriPINet obtains competitive results on several benchmark datasets.
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Mitosis nuclei count is one of the important indicators for the pathological diagnosis of breast cancer. The manual annotation needs experienced pathologists, which is very time-consuming and inefficient. With the development of deep learning methods, some models with good performance have emerged, but the generalization ability should be further strengthened. In this paper, we propose a two-stage mitosis segmentation and classification method, named SCMitosis. Firstly, the segmentation performance with a high recall rate is achieved by the proposed depthwise separable convolution residual block and channel-spatial attention gate. Then, a classification network is cascaded to further improve the detection performance of mitosis nuclei. The proposed model is verified on the ICPR 2012 dataset, and the highest F-score value of 0.8687 is obtained compared with the current state-of-the-art algorithms. In addition, the model also achieves good performance on GZMH dataset, which is prepared by our group and will be firstly released with the publication of this paper. The code will be available at: https://github.com/antifen/mitosis-nuclei-segmentation.
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Salient object detection (SOD) focuses on distinguishing the most conspicuous objects in the scene. However, most related works are based on RGB images, which lose massive useful information. Accordingly, with the maturity of thermal technology, RGB-T (RGB-Thermal) multi-modality tasks attain more and more attention. Thermal infrared images carry important information which can be used to improve the accuracy of SOD prediction. To accomplish it, the methods to integrate multi-modal information and suppress noises are critical. In this paper, we propose a novel network called Interactive Context-Aware Network (ICANet). It contains three modules that can effectively perform the cross-modal and cross-scale fusions. We design a Hybrid Feature Fusion (HFF) module to integrate the features of two modalities, which utilizes two types of feature extraction. The Multi-Scale Attention Reinforcement (MSAR) and Upper Fusion (UF) blocks are responsible for the cross-scale fusion that converges different levels of features and generate the prediction maps. We also raise a novel Context-Aware Multi-Supervised Network (CAMSNet) to calculate the content loss between the prediction and the ground truth (GT). Experiments prove that our network performs favorably against the state-of-the-art RGB-T SOD methods.
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Camouflaged object detection (COD) aims to detect/segment camouflaged objects embedded in the environment, which has attracted increasing attention over the past decades. Although several COD methods have been developed, they still suffer from unsatisfactory performance due to the intrinsic similarities between the foreground objects and background surroundings. In this paper, we propose a novel Feature Aggregation and Propagation Network (FAP-Net) for camouflaged object detection. Specifically, we propose a Boundary Guidance Module (BGM) to explicitly model the boundary characteristic, which can provide boundary-enhanced features to boost the COD performance. To capture the scale variations of the camouflaged objects, we propose a Multi-scale Feature Aggregation Module (MFAM) to characterize the multi-scale information from each layer and obtain the aggregated feature representations. Furthermore, we propose a Cross-level Fusion and Propagation Module (CFPM). In the CFPM, the feature fusion part can effectively integrate the features from adjacent layers to exploit the cross-level correlations, and the feature propagation part can transmit valuable context information from the encoder to the decoder network via a gate unit. Finally, we formulate a unified and end-to-end trainable framework where cross-level features can be effectively fused and propagated for capturing rich context information. Extensive experiments on three benchmark camouflaged datasets demonstrate that our FAP-Net outperforms other state-of-the-art COD models. Moreover, our model can be extended to the polyp segmentation task, and the comparison results further validate the effectiveness of the proposed model in segmenting polyps. The source code and results will be released at https://github.com/taozh2017/FAPNet.
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现有的RGB-D SOD方法主要依赖于对称的两个基于CNN的网络来分别提取RGB和深度通道特征。但是,对称传统网络结构有两个问题:首先,CNN在学习全球环境中的能力是有限的。其次,对称的两流结构忽略了模态之间的固有差异。在本文中,我们提出了一个基于变压器的非对称网络(TANET),以解决上述问题。我们采用了变压器(PVTV2)的强大功能提取能力,从RGB数据中提取全局语义信息,并设计轻巧的CNN骨架(LWDEPTHNET),以从深度数据中提取空间结构信息,而无需预训练。不对称混合编码器(AHE)有效地减少了模型中参数的数量,同时不牺牲性能而增加速度。然后,我们设计了一个跨模式特征融合模块(CMFFM),该模块增强并互相融合了RGB和深度特征。最后,我们将边缘预测添加为辅助任务,并提出一个边缘增强模块(EEM)以生成更清晰的轮廓。广泛的实验表明,我们的方法在六个公共数据集上实现了超过14种最先进的RGB-D方法的卓越性能。我们的代码将在https://github.com/lc012463/tanet上发布。
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In recent years, object detection has achieved a very large performance improvement, but the detection result of small objects is still not very satisfactory. This work proposes a strategy based on feature fusion and dilated convolution that employs dilated convolution to broaden the receptive field of feature maps at various scales in order to address this issue. On the one hand, it can improve the detection accuracy of larger objects. On the other hand, it provides more contextual information for small objects, which is beneficial to improving the detection accuracy of small objects. The shallow semantic information of small objects is obtained by filtering out the noise in the feature map, and the feature information of more small objects is preserved by using multi-scale fusion feature module and attention mechanism. The fusion of these shallow feature information and deep semantic information can generate richer feature maps for small object detection. Experiments show that this method can have higher accuracy than the traditional YOLOv3 network in the detection of small objects and occluded objects. In addition, we achieve 32.8\% Mean Average Precision on the detection of small objects on MS COCO2017 test set. For 640*640 input, this method has 88.76\% mAP on the PASCAL VOC2012 dataset.
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重型设备制造将特定的轮廓分解为图纸,并切割钣金以缩放焊接。当前,手动实现了焊接图轮廓的大多数分割和提取。它的效率大大降低了。因此,我们提出了一种基于U-NET的轮廓分割和用于焊接工程图的提取方法。工程图纸所需的零件的轮廓可以自动划分和清空,从而大大提高了制造效率。 U-NET包括一个编码器,该编码器通过语义差异和编码器和解码器之间的空间位置特征信息实现端到端映射。尽管U-NET擅长于细分医学图像,但我们在焊接结构图数据集上进行的广泛实验表明,经典的U-NET体系结构在细分焊接工程图纸方面缺乏。因此,我们设计了一种新型的通道空间序列注意模块(CSSAM),并在经典的U-NET上进行改进。同时,提出了垂直最大池和平均水平池。通过两个相等的卷积将池操作传递到CSSAM模块中。汇总之前的输出和功能通过语义聚类融合在一起,它取代了传统的跳跃结构,并有效地缩小了编码器和解码器之间的语义差距,从而改善了焊接工程图的分割性能。我们使用VGG16作为骨干网络。与经典的U-NET相比,我们的网络在工程绘图数据集细分方面具有良好的性能。
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在广泛的实用应用中,需要进行远程感知的城市场景图像的语义细分,例如土地覆盖地图,城市变化检测,环境保护和经济评估。在深度学习技术的快速发展,卷积神经网络(CNN)的迅速发展。 )多年来一直在语义细分中占主导地位。 CNN采用层次特征表示,证明了局部信息提取的强大功能。但是,卷积层的本地属性限制了网络捕获全局上下文。最近,作为计算机视觉领域的热门话题,Transformer在全球信息建模中展示了其巨大的潜力,从而增强了许多与视觉相关的任务,例如图像分类,对象检测,尤其是语义细分。在本文中,我们提出了一个基于变压器的解码器,并为实时城市场景细分构建了一个类似Unet的变压器(UneTformer)。为了有效的分割,不显示器将轻量级RESNET18选择作为编码器,并开发出有效的全球关注机制,以模拟解码器中的全局和局部信息。广泛的实验表明,我们的方法不仅运行速度更快,而且与最先进的轻量级模型相比,其准确性更高。具体而言,拟议的未显示器分别在无人机和洛夫加数据集上分别达到了67.8%和52.4%的MIOU,而在单个NVIDIA GTX 3090 GPU上输入了512x512输入的推理速度最多可以达到322.4 fps。在进一步的探索中,拟议的基于变压器的解码器与SWIN变压器编码器结合使用,还可以在Vaihingen数据集上实现最新的结果(91.3%F1和84.1%MIOU)。源代码将在https://github.com/wanglibo1995/geoseg上免费获得。
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Real-time semantic segmentation has played an important role in intelligent vehicle scenarios. Recently, numerous networks have incorporated information from multi-size receptive fields to facilitate feature extraction in real-time semantic segmentation tasks. However, these methods preferentially adopt massive receptive fields to elicit more contextual information, which may result in inefficient feature extraction. We believe that the elaborated receptive fields are crucial, considering the demand for efficient feature extraction in real-time tasks. Therefore, we propose an effective and efficient architecture termed Dilation-wise Residual segmentation (DWRSeg), which possesses different sets of receptive field sizes within different stages. The architecture involves (i) a Dilation-wise Residual (DWR) module for extracting features based on different scales of receptive fields in the high level of the network; (ii) a Simple Inverted Residual (SIR) module that uses an inverted bottleneck structure to extract features from the low stage; and (iii) a simple fully convolutional network (FCN)-like decoder for aggregating multiscale feature maps to generate the prediction. Extensive experiments on the Cityscapes and CamVid datasets demonstrate the effectiveness of our method by achieving a state-of-the-art trade-off between accuracy and inference speed, in addition to being lighter weight. Without using pretraining or resorting to any training trick, we achieve 72.7% mIoU on the Cityscapes test set at a speed of 319.5 FPS on one NVIDIA GeForce GTX 1080 Ti card, which is significantly faster than existing methods. The code and trained models are publicly available.
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随着计算机图形技术的开发,计算机软件合成的图像越来越接近照片。尽管计算机图形技术为我们带来了游戏和电影领域中的盛大视觉盛宴,但它也可以被不良意愿的人使用来指导公众意见并造成政治危机或社会动荡。因此,如何将计算机生成的图形(CG)与照片(PG)区分开已成为数字图像取证领域的重要主题。本文提出了基于通道关节和软杆的双流卷积神经网络。所提出的网络体系结构包括一个用于提取图像噪声信息的残差模块和一个联合通道信息提取模块,用于捕获图像的浅色语义信息。此外,我们还设计了一个残留结构,以增强特征提取并减少剩余流中信息的损失。联合通道信息提取模块可以获取输入图像的浅语义信息,该信息可以用作残差模块的信息补充块。整个网络使用Softpool来减少图像下采样的信息丢失。最后,我们融合了两个流以获得分类结果。 SPL2018和DSTOK上的实验表明,所提出的方法优于现有方法,尤其是在DSTOK数据集上。例如,我们的模型的性能超过了最先进的3%。
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由于波长依赖性的光衰减,折射和散射,水下图像通常遭受颜色变形和模糊的细节。然而,由于具有未变形图像的数量有限数量的图像作为参考,培训用于各种降解类型的深度增强模型非常困难。为了提高数据驱动方法的性能,必须建立更有效的学习机制,使得富裕监督来自有限培训的示例资源的信息。在本文中,我们提出了一种新的水下图像增强网络,称为Sguie-net,其中我们将语义信息引入了共享常见语义区域的不同图像的高级指导。因此,我们提出了语义区域 - 明智的增强模块,以感知不同语义区域从多个尺度的劣化,并将其送回从其原始比例提取的全局注意功能。该策略有助于实现不同的语义对象的强大和视觉上令人愉快的增强功能,这应该由于对差异化增强的语义信息的指导应该。更重要的是,对于在训练样本分布中不常见的那些劣化类型,指导根据其语义相关性与已经良好的学习类型连接。对公共数据集的广泛实验和我们拟议的数据集展示了Sguie-Net的令人印象深刻的表现。代码和建议的数据集可用于:https://trentqq.github.io/sguie-net.html
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