Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records
Blind Source Separation of Different Retinal Pulsatile Patterns from Simultaneous Long-term Binocular Ophthalmoscopic Video-records
复制标题
从同时长期双眼检眼镜视频记录中盲源分离不同的视网膜搏动模式
DOI:
10.1109/embc.2019.8857560
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
R. Kolar
中科院分区:
文献类型:
--
作者:
I. Labounkova;R. Labounek;J. Odstrcilik;M. Hracho;I. Nestrasil;R. P. Tornow;R. Kolar
Optical imaging of retinal hemodynamic function is an important part of ophthalmologic research. Development and inventing of imaging devices and data analysis methods are both just in progress. The current study innovatively implements two blind source separation (BSS) techniques (i.e. spatial Principal Component Analysis - sPCA; and spatial Independent Component Analysis - sICA) in application of an automatic detection and segmentation of a distinct Optic Disc (OD) areas with different hemodynamic properties from a simultaneous binocular video-ophthalmoscopic records. Both methods detected 3 different spatial patterns mostly symmetric over both eyes stable and reproducible over investigated participants, i.e. central Spontaneous Vessel Pulsations (SVPs), inner OD intensity pulsations and other OD pulsations. Dynamics of all mentioned patterns has a periodic character with similar main frequency (possibly corresponding to subject-specific heart rate) but shifted phase decreasing patterns' mutual high cross-correlations. The sICA estimates a higher rate of phase shifts than sPCA.
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DOI:
10.1117/12.2284172
发表时间:
2017
期刊:
影响因子:
--
作者:
R. Kolar;I. Liberdova;J. Odstrcilik;M. Hracho;R. P. Tornow
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R. P. Tornow
DOI:
--
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