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Confocal endoscope image correction method and system based on fiber optic probe

A fiber optic probe and image correction technology, applied in endoscope, image enhancement, image analysis, etc., can solve the problem of image quality degradation and achieve high speed effect

Active Publication Date: 2022-02-18
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0008] The purpose of the present invention is to address the problems in the above-mentioned prior art, to provide a method for joint real-time line-by-line misalignment correction of FPGA and computer, and to solve the problem of image quality reduction caused by randomly changing image misalignment

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  • Confocal endoscope image correction method and system based on fiber optic probe
  • Confocal endoscope image correction method and system based on fiber optic probe
  • Confocal endoscope image correction method and system based on fiber optic probe

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Embodiment Construction

[0077] In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0078] The invention proposes a real-time line-by-line misalignment correction method combined with an FPGA and a computer to solve the problem of image quality reduction caused by randomly changing image misalignment. The specific principles are as follows:

[0079] In the process of solving the problem, the present invention will dislocation amount Divided into two parts:

[0080]

[0081] in, a Indicates the phase difference between the synchronous signal and the galvanometer movement, this phase difference is a constant, Indicates the jitter of the synchronous...

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Abstract

The invention discloses a confocal endoscope image correction method and system based on an optical fiber probe. The method includes the following steps: collecting a group of background images through the confocal endoscope based on an optical fiber probe, and taking the average as the average background image; Correct the dislocation of the average background image to obtain the corrected average background image B and the average dislocation value a ; using the average background image B and the average misalignment value a Correct misalignment and distortion in confocal endoscopy images. Based on the inherent characteristics of the confocal endoscopic image, the present invention corrects the sample image information through the background image information, performs parallel calculation through the FPGA chip on the acquisition card, solves the problem of image dislocation and distortion in real time, and achieves Real-time correction of image misalignment and distortion.

Description

technical field [0001] The invention belongs to the field of image correction, in particular to a confocal endoscope image correction method and system based on an optical fiber probe. Background technique [0002] Laser confocal endoscopy is a new type of endoscope that combines laser confocal microscopy and traditional endoscopy. Tomography plays an important role in the screening of early tumors and precancerous lesions. [0003] The principle of laser confocal endoscopy is shown in Figure 1. Laser confocal endoscopy relies on X / Y The axis scanning galvanometer deflects the laser beam to image the entire scanning plane point by point, X / Y The scan mode of the axis galvanometer is shown in Fig. 2. Two scanning galvanometers are placed orthogonally, X After the axis galvanometer scans one line Y The axis galvanometer moves one step, X One round-trip cycle of the axis galvanometer completes the scanning of two lines of images. Taking scanning an image of 512×512 pixel...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/50A61B1/00
CPCG06T5/50A61B1/00009G06T2207/10068G06T2207/20216G06T5/80
Inventor 徐宝腾杨西斌熊大曦刘家林周伟
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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