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Detection of Lung Tumor Using ASPP-Unet with Whale Optimization Algorithm 被引量:1
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作者 Mimouna Abdullah Alkhonaini Siwar Ben Haj Hassine +5 位作者 Marwa Obayya Fahd N.Al-Wesabi Anwer Mustafa Hilal Manar Ahmed Hamza Abdelwahed Motwakel Mesfer Al Duhayyim 《Computers, Materials & Continua》 SCIE EI 2022年第8期3511-3527,共17页
The unstructured growth of abnormal cells in the lung tissue creates tumor.The early detection of lung tumor helps the patients avoiding the death rate and gives better treatment.Various medical image modalities can h... The unstructured growth of abnormal cells in the lung tissue creates tumor.The early detection of lung tumor helps the patients avoiding the death rate and gives better treatment.Various medical image modalities can help the physicians in the diagnosis of disease.Many research works have been proposed for the early detection of lung tumor.High computation time and misidentification of tumor are the prevailing issues.In order to overcome these issues,this paper has proposed a hybrid classifier of Atrous Spatial Pyramid Pooling(ASPP)-Unet architecture withWhale Optimization Algorithm(ASPP-Unet-WOA).To get a fine tuning detection of tumor in the Computed Tomography(CT)of lung image,this model needs pre-processing using Gabor filter.Secondly,feature segmentation is done using Guaranteed Convergence Particle Swarm Optimization.Thirdly,feature selection is done using Binary Grasshopper Optimization Algorithm.This proposed(ASPPUnet-WOA)is implemented in the dataset of National Cancer Institute(NCI)Lung Cancer Database Consortium.Various performance metric measures are evaluated and compared to the existing classifiers.The accuracy of Deep Convolutional Neural Network(DCNN)is 93.45%,Convolutional Neural Network(CNN)is 91.67%,UNet obtains 95.75%and ASPP-UNet-WOA obtains 98.68%.compared to the other techniques. 展开更多
关键词 CLASSIFIER whale optimization aspp-unet gabor filter lung tumor
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改进UNet的轻量化道路图像语义分割算法 被引量:4
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作者 钟志峰 何佳伟 +3 位作者 侯瑞洁 晏阳天 刘梦娜 赵明俊 《现代电子技术》 2022年第19期71-76,共6页
针对传统道路图像语义分割方法精度低、速度慢,并且难以部署在移动端设备的问题,提出基于UNet的轻量化语义分割模型Faster-UNet,该模型继承UNet编码-解码的结构特点并兼具多层特征感知能力。针对道路场景景深变化特点,Faster-UNet模型... 针对传统道路图像语义分割方法精度低、速度慢,并且难以部署在移动端设备的问题,提出基于UNet的轻量化语义分割模型Faster-UNet,该模型继承UNet编码-解码的结构特点并兼具多层特征感知能力。针对道路场景景深变化特点,Faster-UNet模型仅进行3次下采样来提取图像特征,在减少了模型参数量的同时,又最大限度保留了物体边缘特征;针对削减深层特征导致的类别模糊问题,在模型拼接编码与解码的部分,使用空间金字塔池化(ASPP)模块提取图像多尺度信息进行特征增强;为了进一步整合各通道特征的权重,在模型解码部分嵌入通道注意力模块,进行特征图权重的自适应调节。所提模型在以上三点创新的基础上,在道路场景Camvid数据集上进行验证实验,结果表明:Faster-UNet的MIoU由UNet的60.5%提升到65.0%,并且模型大小由UNet的118.42 Mb下降至Faster-UNet的20.76 Mb,网络模型性能优良。所提算法在针对道路分割问题优化模型结构的同时提高了分割精度,从而为自动驾驶技术提供了一定的理论基础和工程应用参考。 展开更多
关键词 道路图像 语义分割 UNet模型 空间金字塔池化 注意力机制 模型性能 自动驾驶
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