Detail publikace

Registration of retinal sequences from new video-ophthalmoscopic camera

KOLÁŘ, R. TORNOW, R. ODSTRČILÍK, J. LIBERDOVÁ, I.

Originální název

Registration of retinal sequences from new video-ophthalmoscopic camera

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Analysis of fast temporal changes on retinas has become an important part of diagnostic video-ophthalmology. It enables investigation of the hemodynamic processes in retinal tissue, e.g. blood-vessel diameter changes as a result of blood-pressure variation, spontaneous venous pulsation influenced by intracranial-intraocular pressure difference, blood-volume changes as a result of changes in light reflection from retinal tissue, and blood flow using laser speckle contrast imaging. For such applications, image registration of the recorded sequence must be performed. Here we use a new non-mydriatic video-ophthalmoscope for simple and fast acquisition of low SNR retinal sequences. We introduce a novel, two-step approach for fast image registration. The phase correlation in the first stage removes large eye movements. Lucas-Kanade tracking in the second stage removes small eye movements. We propose robust adaptive selection of the tracking points, which is the most important part of tracking-based approaches. We also describe a method for quantitative evaluation of the registration results, based on vascular tree intensity profiles.

Klíčová slova

Retinal imaging; Video-ophthalmoscopy; Image registration; Tracking

Autoři

KOLÁŘ, R.; TORNOW, R.; ODSTRČILÍK, J.; LIBERDOVÁ, I.

Vydáno

20. 5. 2016

Nakladatel

BioMed Central

ISSN

1475-925X

Periodikum

BIOMED ENG ONLINE

Ročník

15

Číslo

57

Stát

Spojené království Velké Británie a Severního Irska

Strany od

1

Strany do

17

Strany počet

17

URL

http://biomedical-engineering-online.biomedcentral.com/articles/10.1186/s12938-016-0191-0

Plný text v Digitální knihovně

http://hdl.handle.net/11012/60633

BibTex

@article{BUT125580,
  author="Radim {Kolář} and Ralf-Peter {Tornow} and Jan {Odstrčilík} and Ivana {Labounková}",
  title="Registration of retinal sequences from new video-ophthalmoscopic camera",
  journal="BIOMED ENG ONLINE",
  year="2016",
  volume="15",
  number="57",
  pages="1--17",
  doi="10.1186/s12938-016-0191-0",
  issn="1475-925X",
  url="http://biomedical-engineering-online.biomedcentral.com/articles/10.1186/s12938-016-0191-0"
}