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An improved YOLOv8 apple leaf disease detection algorithm 认领 引用
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作者 Xinyu PEI Wei YUAN +1 位作者 Yuexiu ZHANG Lianjun SONG 《Optoelectronics Letters》 EI 2026年第5期314-320,共7页
This paper suggests an improved you only look once version 8n(YOLOv8n)algorithm for apple leaf disease detection,abbreviated as ALWB-YOLOv8n.The model is comprised of four essential components.Initially,arbitrary kern... This paper suggests an improved you only look once version 8n(YOLOv8n)algorithm for apple leaf disease detection,abbreviated as ALWB-YOLOv8n.The model is comprised of four essential components.Initially,arbitrary kernel convolution(AKConv)replaces the convolution module,which significantly decreases both the model’s parameter count and its overall size.Secondly,the large selective kernel network(LSKNet)attention mechanism is added in the Backbone,which can dynamically adjust the spatial sensory domain,and experiments have proved that this method is extremely advantageous for small target detection.Third,a weighted bi-directional feature pyramid network is introduced,which enables the model to achieve multi-scale feature fusion and is more concise and faster.Finally,wise intersection over union(WIoU)is used to replace complete intersection over union(CIoU)in YOLOv8,and the idea of focal loss is introduced,which effectively solves the detection problems in cases such as apple leaves occluding each other and blurred boundaries of diseased leaves.The improved algorithm exhibits superior performance compared to other common object detection algorithms.Compared with YOLOv8n,the improved algorithm achieves 2.3%improvement in precision,3.8%improvement in recall,and 2.5%and 2.7%improvement in mAP0.5 and mAP0.5:0.95,respectively.Compared with YOLOv8n,the improved model reduces the number of parameters and size of the model and realizes real-time monitoring with a frames per second(FPS)of 50.5. 展开更多
关键词 large selective kernel network arbitrary kernel convolution large selective kernel network lsknet attention kernel convolution akconv replaces weighted bi directional feature pyramid network adjust spatial sensory domainand improved YOLOv n algorithm apple leaf disease detection
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A selective kernel-based cycle-consistent generative adversarial network for unpaired low-dose CT denoising 认领 引用 被引量：2
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作者 Chaoqun Tan Mingming Yang +2 位作者 Zhisheng You Hu Chen Yi Zhang 《Precision Clinical Medicine》 2022年第2期125-136,共12页
Low-dose computed tomography(LDCT)denoising is an indispensable procedure in the medical imaging field,which not only improves image quality,but can mitigate the potential hazard to patients caused by routine doses.De... Low-dose computed tomography(LDCT)denoising is an indispensable procedure in the medical imaging field,which not only improves image quality,but can mitigate the potential hazard to patients caused by routine doses.Despite the improvement in performance of the cycle-consistent generative adversarial network(CycleGAN)due to the well-paired CT images shortage,there is still a need to further reduce image noise while retaining detailed features.Inspired by the residual encoder–decoder convolutional neural network(RED-CNN)and U-Net,we propose a novel unsupervised model using CycleGAN for LDCT imaging,which injects a two-sided network into selective kernel networks(SK-NET)to adaptively select features,and uses the patchGAN discriminator to generate CT images with more detail maintenance,aided by added perceptual loss.Based on patch-based training,the experimental results demonstrated that the proposed SKFCycleGAN outperforms competing methods in both a clinical dataset and the Mayo dataset.The main advantages of our method lie in noise suppression and edge preservation. 展开更多
关键词 cycle-consistent adversarial network selective kernel networks unsupervised low dose CT image denoising clinical dataset
融合SKNet与MobilenetV3的芒果叶片病虫害分类方法 认领 引用 被引量：2
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作者 沈熠辉 何惠彬 +1 位作者 陈小宇 颜胜男 《福建农业学报》 CAS CSCD 北大核心 2024年第5期584-592,共9页
【目的】针对芒果叶片病虫害缺少数据集和识别准确率低的问题,筛选构建芒果叶片病虫害分类模型,以提高芒果叶病虫害分类准确率。【方法】提出使用去噪扩散模型进行病虫害数据增强,同时联合SKNet与MobilenetV3模型的芒果叶片病虫害分类... 【目的】针对芒果叶片病虫害缺少数据集和识别准确率低的问题,筛选构建芒果叶片病虫害分类模型,以提高芒果叶病虫害分类准确率。【方法】提出使用去噪扩散模型进行病虫害数据增强,同时联合SKNet与MobilenetV3模型的芒果叶片病虫害分类方法。首先使用去噪扩散模型对数据集进行扩充,再采用多尺度结构相似性指标对生成的病虫害图像与拍摄的病虫害图像之间的相似程度进行评估,接着对DDIM与DCGAN网络训练和生成效果进行比对。在MobilenetV3模型中,将SE注意力模块替换为SKNet模块进行构建网络模型。【结果】使用DDIM生成的所有类型的病虫害图像与拍摄的病虫害图像的MS-SSIM指标均大于0.63,且都高于DCGAN。相较于其他注意力模块,联合SKNet与MobilenetV3的分类效果最佳,在98%以上。对添加CA、CBAM、ECA注意力模块进行平滑类激活图可视化,对比其他注意力模块,使用SKNet注意力分布区域更为集中在病虫害叶片上。【结论】该方法在病虫害叶片检测上具有良好的应用前景,能提升病虫害识别效率与精度,减少检测成本,同时可应用于移动式或者嵌入式设备。 展开更多
关键词 芒果叶片 扩散概率模型 Mobilenet Selective Kernel Networks
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基于SKNet的增强型Pix2pixHD图像去雾方法 认领 引用 被引量：2
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作者 段雅童 许光宇 《湖北理工学院学报》 2022年第4期23-28,共6页
针对采用去雾算法处理后图片仍存在色彩失真、残雾遗留等问题,提出一种基于SKNet的增强型Pix2pixHD去雾方法,即在增强型Pix2pixHD网络的增强模块中引入SKNet网络,实现了不同尺度特征的选择和融合,提高了算法对图像特征的利用率。此外,在... 针对采用去雾算法处理后图片仍存在色彩失真、残雾遗留等问题,提出一种基于SKNet的增强型Pix2pixHD去雾方法,即在增强型Pix2pixHD网络的增强模块中引入SKNet网络,实现了不同尺度特征的选择和融合,提高了算法对图像特征的利用率。此外,在SKNet网络前添加可变形卷积,使得卷积核产生自由形变,以适应不规则的目标物体,增强了模型的可变换能力,达到了很好的去雾效果。较现有的去雾方法,文章提出的网络更好地利用了图像各个尺度的特征细节,提高了图像去雾的效果。 展开更多
关键词 图像去雾 Pix2pixHD Selective Kernel Network(SKNet) 可变形卷积
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