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自胶片摄影时代以来,捕捉和记录高速动态过程便是光学成像领域的重要课题。随着电荷耦合器件和互补金属氧化物半导体等固态成像技术的快速发展,高速成像受到了越来越多的关注。高时间分辨率的成像手段能够“冻结”快速运动,精确捕捉物体的瞬态变化,在航空航天、工业制造等领域展现出了巨大潜力。

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自胶片摄影时代以来,捕捉和记录高速动态过程便是光学成像领域的重要课题。随着电荷耦合器件和互补金属氧化物半导体等固态成像技术的快速发展,高速成像受到了越来越多的关注。高时间分辨率的成像手段能够“冻结”快速运动,精确捕捉物体的瞬态变化,在航空航天、工业制造等领域展现出了巨大潜力。

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    自胶片摄影时代以来,捕捉和记录高速动态过程便是光学成像领域的重要课题。随着电荷耦合器件和互补金属氧化物半导体等固态成像技术的快速发展,高速成像受到了越来越多的关注。高时间分辨率的成像手段能够“冻结”快速运动,精确捕捉物体的瞬态变化,在航空航天、工业制造等领域展现出了巨大潜力。

    自胶片摄影时代以来,捕捉和记录高速动态过程便是光学成像领域的重要课题。随着电荷耦合器件和互补金属氧化物半导体等固态成像技术的快速发展,高速成像受到了越来越多的关注。高时间分辨率的成像手段能够“冻结”快速运动,精确捕捉物体的瞬态变化,在航空航天、工业制造等领域展现出了巨大潜力。

    . AI赋能超高速结构光三维成像. 科技导报, 2025 , 43 (19) : 4 -4 .
    . Science & Technology Review, 2025 , 43 (19) : 4 -4 .
    自胶片摄影时代以来,捕捉和记录高速动态过程便是光学成像领域的重要课题。随着电荷耦合器件和互补金属氧化物半导体等固态成像技术的快速发展,高速成像受到了越来越多的关注。高时间分辨率的成像手段能够“冻结”快速运动,精确捕捉物体的瞬态变化,在航空航天、工业制造等领域展现出了巨大潜力。
    2025年8月4日,南京理工大学陈钱、左超等团队报道了一种新型结构光三维成像方法——基于双频角度复用的条纹投影轮廓术(DFAMFPP)。它把原本需要多次投影/采集的时序信息“压进”一张长曝光的叠加图里,再用结合物理先验的深度神经网络把这张“合成帧”分解回连续时刻的相位图,从而把3D重建速度做到了相机原生帧率的16倍。团队实测在仅625 Hz相机下,仍可完成10000 Hz的三维成像,并成功捕捉到高速运行的涡扇叶片动态,这一思路等于绕开了“投影—采集一一对应”的硬件锁死关系。
    投影端按不同角度投射由“粗+细”2套条纹组成的双频图案,场景在运动时会把每一刻的形变编码到条纹相位里;相机只需1次长曝光得到一幅“多时刻叠加”的条纹图。之后,网络先在空间与频域联合提取特征,把叠加条纹拆成一串不同时刻的“子帧”,再利用数论约束的相位展开与物理驱动的条纹分析得到高精度绝对相位,从而恢复每一刻的三维形貌。
    与传统结构光需高刷投影仪和高速相机同步不同,DFAMFPP把提速的负担转移到了“可学习的解码”上,实现“软件定义帧率提升”。研究人员强调,该法在高速、较大景深下仍保持较高精度,并在复杂动态场景中验证了鲁棒性。
    (来源于中国科技期刊卓越行动计划入选期刊:《Opto-Electronic Advances》,2025,8(9))

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    2种不同金属材料的力学参数

    Family
    属数
    Number of
    genus
    种数
    Number of
    species
    占总种数比例
    Percentage of
    total species (%)

    Genus
    种数
    Number of
    species
    占总种数比例
    Percentage of total
    species (%)
    鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
    小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
    多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
    红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
    小菇属 Mycena 11 5.26
    光柄菇属 Pluteus 5 2.39
    红菇属 Russula 17 8.13
    栓菌属 Trametes 5 2.39
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