A processing method for ophthalmic oct images

Abstract

The invention discloses a method for processing ophthalmic OCT images, which includes: selecting the common part OCT image of any group of ophthalmic OCT images as a standard ophthalmic OCT image, and combining the remaining at least one group of common part OCT images of ophthalmic OCT images and The standard ophthalmic OCT images are matched one by one to obtain the corresponding rotation and translation; according to the optical path difference of the spatial position corresponding to the OCT image of each eye part of each group of ophthalmic OCT images, they are spliced ​​into a deep The deep first OCT image; the first OCT image is processed to obtain the second OCT image; keep the standard ophthalmic OCT image still, and select the corresponding part of the second OCT image from the OCT image of other human eye parts, according to the OCT of each part The optical path difference of the corresponding spatial position of the image is spliced ​​to obtain an ophthalmic OCT image containing multiple human eye parts. The method reduces the complexity of ophthalmic OCT equipment and saves cost.

Description

technical field [0001] The present invention belongs to the field of image processing, and in particular relates to the splicing of ophthalmic OCT images obtained by scanning human eyes with ophthalmic OCT equipment and processed by computer. tomographic images. Background technique [0002] The current OCT technology is divided into three types: time domain, frequency domain, and frequency sweep. Among them, the time-domain OCT technology has a deep detection depth, but the speed is too slow. After the measured human eye moves, it will affect the tomographic image of the human eye. The tomographic scanning of the human eye, and the technology of the corresponding frequency-sweeping OCT ophthalmic medical equipment is relatively complicated and the cost is relatively high; if the numerous structural parameters of the human eye cannot be measured at the same time, the curvature or curvature distribution of the front and rear surfaces of the lens, or the fundus cannot be meas...

AI Technical Summary

Problems solved by technology

Among them, the time-domain OCT technology has a deep detection depth, but the speed is too slow. After the measured human eye moves, it will affect the tomographic image of the human eye. The tomographic scanning of the human eye, and the technology of the corresponding frequency-sweeping OCT ophthalmic medical equipment is relatively complicated and the cost is relatively high; if the numerous structural parameters of the human eye cannot be measured at the same time, the curvature or curvature distribution of the front and rear surfaces of the lens, or the fundus cannot be measured. Retinal curvature or curvature distribution, etc.

[0003] The patent application number 201290000031.1 discloses an ophthalmic OCT system that can realize fast switching between anterior segment and posterior segment measurement, but this system can only obtain two parts of the human eye at a time - such as the cornea and the front surface of the lens or the cornea and the retina It is impossible to obtain an ophthalmic OCT image containing multiple human eye parts

Since the human eye to be tested will involuntarily move their eyes even though they are watching the fixation light of the instrument during each measurement, the equipment cannot guarantee that the position of the human eye to be tested relative to the detection equipment will remain unchanged during different measurements, so that it cannot Correcting the image of the measured OCT image, it is impossible to obtain the curvature or curvature distribution of the front and rear surfaces of the lens of the measured human eye and the retina of the human eye fundus

At the same time, because the ophthalmic OCT equipment involved in the patent is not deep enough, a switching device is needed to realize the rapid switching measurement of multiple parts of the human eye at the same time, but the complexity of the multi-part fast switching equipment will inevitably be greatly increased. thus increasing the cost and technical difficulty

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