A method for obtaining the opening and closing angle of the room angle
A technology of opening and closing angles and acquisition methods, which is applied in image analysis, image enhancement, instruments, etc., can solve the problems of large amount of computation, complex algorithms, and inability to quickly identify the opening angle of room angles, so as to improve measurement accuracy and save The effect of measuring time
Active Publication Date: 2022-04-29
INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI
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Problems solved by technology
In recent years, the artificial intelligence automatic identification method based on deep learning usually has complex algorithms and a large amount of calculation, so it cannot quickly identify the opening angle of the room angle.
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[0043] In order to make the purpose, technical solution and advantages of the present application clearer, the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.
[0044] It should be clear that the described embodiments are only some of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the embodiments of the present application.
[0045]When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. In the description of the present application, it should be understood that the terms "first", "second", "third", etc. are only used to distinguish similar objec...
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The present invention provides a method for obtaining the opening and closing angle of the chamber angle, comprising the following steps: obtaining panoramic information of the anterior segment tissue to be measured, and constructing a three-dimensional image of the anterior segment tissue to be measured according to the panoramic information; in the three-dimensional image, obtaining a preset scan The two-dimensional image of the point; in the two-dimensional image, the angle recess is used as a fixed point, and the moving points are respectively set on the inner boundary of the cornea and the upper boundary of the iris to obtain two moving points; starting from the fixed point, two moving points The points are moved equidistantly along the inner boundary of the cornea and the upper boundary of the iris to obtain several triangles composed of a fixed point and two moving points; obtain the moving distance from the fixed point to one of the moving points and the area of the triangle corresponding to the moving distance ; Perform linear fitting on the moving distance and the area of the corresponding triangle to obtain a fitting straight line; determine the slope of the fitting straight line as the opening and closing angle of the chamber angle. The invention can improve the measurement accuracy of the opening angle of the chamber angle, and save the measurement time of the personnel to be detected.
Description
technical field [0001] The invention relates to the technical field of chamber angle detection of anterior segment tissue, in particular to a method for acquiring the opening and closing angle of the chamber angle. Background technique [0002] The angle between the cornea and the iris is called the anterior chamber angle. The degree of opening of the chamber angle is an important parameter for anterior segment biometrics. When the peripheral iris contacts or permanently adheres to the trabecular meshwork, the outflow of aqueous humor will be blocked and the intraocular pressure will increase. Therefore, the angle opening angle is very important for the screening of primary angle-closure glaucoma. However, the artificial intelligence automatic identification method based on deep learning that has emerged in recent years usually has complex algorithms and a large amount of calculation, so it cannot quickly identify the opening angle of the room angle. Contents of the inven...
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IPC IPC(8): G06T7/00G06T17/00
CPCG06T7/0012G06T17/00G06T2207/10004G06T2207/30041
Inventor 周盛王晓春王效宁杨军计建军王文赛巩丽文
Owner INST OF BIOMEDICAL ENG CHINESE ACAD OF MEDICAL SCI