A fundus light field imaging method and device

Abstract

The present invention relates to the technical field of image processing, and in particular to a fundus light field imaging method and device, which are used to transform the existing fundus optical imaging system so that light field imaging can be applied to fundus imaging. part, determine the aperture mode of the programmable liquid crystal dynamic mask, and then determine the spatial distribution of each liquid crystal unit in the selected aperture mode based on the lesion degree of the target eye, and then determine that when the illumination is sufficient, start shooting and obtain the initial The fundus light field image, and the initial fundus light field image are processed by the preset refocusing rules to obtain the target fundus light field image. In this way, by adding a programmable liquid crystal dynamic mask, the fundus light field imaging can be realized and the fundus image can be taken When shooting, not only does not need to focus, but also does not need to be affected by the subject's eye movement, which is convenient for shooting and post-diagnosis analysis, thereby improving the user experience. Moreover, the transformation method is relatively simple and easy to promote.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a fundus light field imaging method and device. Background technique [0002] In clinical medicine, ophthalmologists use ophthalmoscopes, fundus cameras and other instruments to observe the condition of the patient's fundus to help diagnose the disease. Since the eye itself is a complex optical system, the fundus camera needs to pass through the optical part of the eye to capture a clear fundus The imaging system of a complete fundus camera usually consists of three parts: an illumination subsystem, an observation subsystem, and a camera subsystem. [0003] At present, the fundus camera is generally an optical imaging fundus camera. Because traditional optical imaging can only record the light from the observation target, pass through the imaging aperture, and radiate to the two-dimensional imaging plane, and lose other dimensional information. The particularity of the ...

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Problems solved by technology

[0010] Embodiments of the present invention provide a fundus light field imaging method and device to solve the problem of inaccurate focus in the existing fundus optical imaging system, and the shooting is easily affected by the patient's eye movement, concave shape of the fundus, and edge imaging distortion. The problem that the existing light field imaging method cannot be applied to the fundus imaging system

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