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基于改进PointPillars的目标检测算法研究
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作者 张骞 车虎 +1 位作者 刘君 刘锐军 《南昌航空大学学报(自然科学版)》 CAS 2024年第2期110-119,共10页
针对PointPillars主干网络提取特征不精细、小目标特征丢失的问题,提出一种改进PointPillars的目标检测算法FOPointPillars。首先,引入全维度动态卷积(Omni-dimensional Dynamic Convolution,ODConv)代替普通卷积对伪图像进行特征提取,... 针对PointPillars主干网络提取特征不精细、小目标特征丢失的问题,提出一种改进PointPillars的目标检测算法FOPointPillars。首先,引入全维度动态卷积(Omni-dimensional Dynamic Convolution,ODConv)代替普通卷积对伪图像进行特征提取,增强特征提取能力;之后,引入特征金字塔结构(Feature Pyramid Network,FPN),将提取的特征多尺度融合,获取小目标精确的语义信息;然后,在KITTI公共数据集中进行训练与测试;最后,将该网络部署到自研小车上。实验结果表明,在鸟瞰图(Bird’s Eye View,BEV)、3D空间和平均方向相似性(Average Orientation Similarity,AOS)上,FOPointPillars检测算法的mAP分别达到70.51%、64.31%、71.64%,相比原网络PointPillars分别提升1.65%、0.74%、2.18%。该方法对障碍物的检测功能可辅助无人驾驶小车对环境进行感知。 展开更多
关键词 目标检测 PointPillars 全维度动态卷积 特征金字塔 无人驾驶小车
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An improved method for tubulin staining of ciliated eukaryotes
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作者 Tingting Pan Jing Zhang +8 位作者 che hu Guanxiong Yan Weiwei Qin Zixin cheng Dongxia Yuan Fang Zhou Jie Xiong Wei Miao Chuanqi Jiang 《Water Biology and Security》 2024年第3期65-71,共7页
Ciliated microeukaryotes(ciliates)are distinguished by their cilia,which are rich in tubulin.We developed a method for tubulin staining in ciliate cells that involves using live-cell tubulin-staining dyes instead of a... Ciliated microeukaryotes(ciliates)are distinguished by their cilia,which are rich in tubulin.We developed a method for tubulin staining in ciliate cells that involves using live-cell tubulin-staining dyes instead of antibodies thereby streamlining the staining process,which is effective across diverse ciliate lineages.Moreover,our method allows integration with immunofluorescence staining using antibodies when needed.The potential applications of this technique extend to cell biology and ciliate morphological and ecological studies. 展开更多
关键词 CILIATE CILIUM Live-cell tubulin dye Tubulin staining
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