Fundus OCT imaging method utilizing three-dimensional imaging of binocular stereo vision and system thereof

A binocular stereo vision and imaging system technology, applied in the field of blood flow imaging

Inactive Publication Date: 2015-10-07
BEIJING INFORMATION SCI & TECH UNIV
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Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the present invention integrates the binocular stereo vision three-dimensional imaging system and the fundus OCT system, utilizes the binocular stereo vision three-dimensional imaging system to track the three-dimensional movement of the eyeball, and utilizes the three-dimensional movement information of the eyeball to a...

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  • Fundus OCT imaging method utilizing three-dimensional imaging of binocular stereo vision and system thereof
  • Fundus OCT imaging method utilizing three-dimensional imaging of binocular stereo vision and system thereof
  • Fundus OCT imaging method utilizing three-dimensional imaging of binocular stereo vision and system thereof

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[0079] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. When describing the present invention, if the description of the notification function or structure related to the invention is unnecessary, the description of this part can be omitted. Also, the functions described below are all functions defined in consideration of the present invention, and the functions are variable according to the user's intention or practice, so the definition should be determined based on the entire content of this specification.

[0080] The block diagram of the OCT imaging system is as follows: figure 1 As shown, by the optical path (OCT imaging system optical path, binocular stereo vision system imaging optical path and lighting optical path), computer internal boards (data drive card, line array camera acquisition card and two-dimensional image acquisition card) and algorithm (data synchronous acquisition unit and data process...

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Abstract

The invention provides a fundus OCT imaging method utilizing three-dimensional imaging of binocular stereo vision and a system thereof with the purpose of solving the problem that three-dimensional correction of phase positions, spatial positions and angles of OCT signals is not precise. The method comprises following steps of: synchronously collecting a binocular stereo vision imaging system and a fundus OCT system; utilizing a self-calibration result of the binocular stereo vision imaging system and acquiring a rotation matrix ROI and a translation vector TOI between an OCT coordinate system and an coordinate system for binocular stereo vision and re-establishing three-dimensional coordinates of bifurcation points of retina surface vessels; acquiring a rotation matrix RIE and a translation vector TIE from the coordinate system for binocular stereo vision to a coordinate system of human eyes; extracting a retina B scanning image; utilizing the rotation matrix ROI and the translation vector TOI in order to achieve conversion of the B scanning image from the OCT coordinate system to the coordinate system for binocular stereo vision; utilizing the rotation matrix RIE and the translation vector TIE in order to realize conversion of the B scanning image from the coordinate system for binocular stereo vision to the coordinate system of human eyes; obtaining a three-dimensional OCT image with uniform spatial distribution by interpolation of the converted B scanning image in the coordinate system of human eyes.

Description

technical field [0001] The invention relates to a fundus OCT imaging method and system thereof, in particular to a fundus OCT imaging method and imaging system utilizing binocular stereoscopic three-dimensional imaging to realize high-resolution, high-definition, large-scale fundus OCT three-dimensional structural imaging and blood flow imaging. Background technique [0002] OCT (Optical Coherence Tomography) is another new tomographic imaging technology after X-ray, CT, Magnetic Resonance Imaging (MRI), and ultrasonic diagnostic technology. Compared with conventional medical imaging methods, it has higher sensitivity and resolution; it can realize non-destructive, non-invasive, non-ionizing radiation, micron-scale structural imaging of biological tissues, as well as polarized OCT, Doppler OCT, spectral OCT, elastic OCT and other functional imaging are used for microstructural analysis and characteristic parameter measurement of living biological tissues, and are widely used...

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Application Information

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IPC IPC(8): A61B3/12A61B3/14
Inventor 刘国忠孟浩李萍燕必希王晓飞
Owner BEIJING INFORMATION SCI & TECH UNIV
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