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

一种处理方法、假信号的技术，应用在图像数据处理、测试眼睛的设备、医药科学等方向，能够解决干扰分析、干扰检测分析结果应用等问题，达到结果客观的效果

Inactive Publication Date: 2014-01-29
SHENZHEN AIER EYE HOSPITAL CO LTD
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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

Method used

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Embodiment Construction

[0029] The false signal processing method in the Lacrimal River L layer OCT detection of the present invention, as figure 1 shown, including the following steps:

[0030] Step 1: Convert the OCT scan signal data or generated image on the surface of the Laihe River to obtain a digital matrix, and then identify the false signal area;

[0031] Step 2: Repair the identified false signal area, and output the repaired image;

[0032] Step 3: Compute and output the confidence drop parameters due to artifact repair.

[0033] In step 1, transform and analyze the OCT scan signal data or generated images on the surface of the tear river as follows:

[0034] According to the different forms of the signal in the Laihe River L layer, the corresponding conversion is carried out. If the scanning signal data can be directly obtained from the corresponding interface, the directly obtained scanning signal data is listed as a three-dimensional matrix for the next calculation; if the scanning s...

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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 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T3/00A61B3/14
Inventor 林晨陈志鹏
Owner SHENZHEN AIER EYE HOSPITAL CO LTD
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