Method for processing false signals in OCT (optical coherence tomography) detection of L layer of lacrimal river

Abstract

The invention relates to the technical field of processing on OCT (optical coherence tomography) detection data, in particular to a method for processing false signals in detection of an L layer of a lacrimal river. The method comprises the following steps of (1) converting OCT scanning signal data or generating images of a surface layer of the lacrimal river to obtain a digital matrix, and then recognizing a false signal area; (2) repairing the recognized false signal area, and outputting a repaired image; and (3) calculating and outputting parameters of confidence coefficient reduction caused by repairing of false signals. By the method, the accuracy of an OCT detection result of the L layer of the lacrimal river can be improved.

Description

technical field [0001] The invention relates to the technical field of OCT (optical coherence tomography or optical coherence tomography, Optical Coherence Tomography) detection data processing technology, in particular to a false signal processing method in the detection of the Lacrimal River L layer. Background technique [0002] The tear river is a crescent-shaped structure located at the junction of the lower eyelid margin and the cornea and conjunctiva due to the collection of tears. There is a structure on the surface of the tear river, which has not been reported in the literature before. For convenience, it is named the tear meniscus lin's layer or the tear meniscus lin's layer. The tear river L layer can hardly be observed with the naked eye, but it can be detected by detection techniques such as OCT, and its morphological characteristics can be obtained through OCT scanning. Under normal circumstances, the L layer of the lacrimal river has an approximately oblate ...

AI Technical Summary

Problems solved by technology

However, in OCT and other detections, due to the uneven curvature of the surface of the tear river, part of the water surface of the tear river is often at a specific angle with the OCT detection device, so that direct specular reflection of the OCT emission signal occurs, forming an excessively strong false Signal; this makes the surface of the tear river detected by OCT, in the part where the non-L layer exists or in the part where the L layer should present a weak reflection, a local strong reflection signal is formed, which interferes with the analysis of the structure of this layer

[0003] This requires that in the process of analyzing the L layer of the Lacrimal River, the existence of such false signals should be considered and identified and processed to avoid large errors that interfere with the detection and analysis results in the state of ocular surface lipids. Application in discrimination and diagnosis of related diseases

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