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An Imaging Correction Method Based on Large-Scale OCT Scanning

A large-scale, two-dimensional imaging technology, applied in the field of optical inspection and biomedical engineering, to achieve the effect of correcting errors and real results

Active Publication Date: 2021-08-27
广州广华深启科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when OCT is applied to other fields, such as fingerprint collection, due to the need for large-scale scanning (the entire finger), the error caused by the galvanometer will be more obvious

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  • An Imaging Correction Method Based on Large-Scale OCT Scanning
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  • An Imaging Correction Method Based on Large-Scale OCT Scanning

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Embodiment Construction

[0037] The present invention will be further described below with reference to the accompanying drawings and in combination with preferred embodiments.

[0038] like figure 1 As shown, a preferred embodiment of the present invention discloses a two-dimensional imaging correction method based on large-scale OCT scanning, comprising the following steps:

[0039] A1: Build a frequency-domain OCT system. The frequency-domain OCT system includes a spectrometer, a light source, a sample arm and a reference arm. The sample arm is used to place the sample, including a galvanometer, a focusing lens and a collimating lens;

[0040] Among them, the OCT system meets the requirements of large-scale scanning, the scanning angle of the galvanometer is relatively large (for example, the scanning range of the galvanometer is greater than or equal to 10 mm), and the focal length of the focusing lens of the sample arm is relatively long (for example, the focal length of the focusing lens is grea...

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PUM

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Abstract

The invention discloses an imaging correction method based on large-scale OCT scanning, including a two-dimensional imaging correction method and a three-dimensional imaging correction method, wherein the two-dimensional imaging correction method includes: building a frequency domain OCT system, and the frequency domain OCT system includes a spectrometer , a light source, a sample arm and a reference arm, the sample arm is used to place the sample, including a galvanometer, a focusing lens and a collimating lens; the frequency domain OCT system is used to scan the sample two-dimensionally to obtain a two-dimensional cross-sectional view; the described The two-dimensional cross-sectional view is regarded as a two-dimensional pixel array, and according to the offset of the pixel points on the two-dimensional pixel array relative to the initial point scanned by the galvanometer, all pixels in the axial direction of the two-dimensional cross-sectional view are Optical path correction. The invention can offset errors and obtain accurate scanning images.

Description

technical field [0001] The invention relates to the fields of optical detection and biomedical engineering, in particular to an imaging correction method based on large-scale OCT scanning. Background technique [0002] Optical coherence tomography (Optical Coherence Tomography, OCT) is an imaging technology developed rapidly in recent years. It achieves a higher resolution and sensitivity than other methods while ensuring a certain detection depth; High rate, high sensitivity, non-invasive, and non-contact characteristics occupy a place in many imaging methods, and have a good development prospect, and have attracted more and more attention. Optical coherence tomography technology is based on the disciplines of optics, electronics, and computer technology. It combines semiconductor and ultrafast laser technology, ultrasensitive detection, precision automatic control, and computer image processing. After computer X-ray tomography imaging, ultrasonic imaging and nuclear magne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/00A61B5/1172
CPCA61B5/004A61B5/0064A61B5/0066A61B5/0073A61B5/0075A61B5/1172
Inventor 何永红孙占郭晓睿郭翠霞
Owner 广州广华深启科技有限责任公司