Phase unwrapping method and device in Doppler optical coherence tomography

Abstract

An embodiment of the invention provides a phase unwrapping method and device in Doppler optical coherence tomography. The method comprises the steps of: based on a wrapped image in Doppler optical coherence tomography, through using a pre-built phase unwrapping classification model based on a deep learning residual network, acquiring a wrapping number corresponding to a wrapping phase in the wrapping image; calculating a real phase corresponding to the wrapping image based on the wrapping phase and the wrapping number corresponding to the wrapping phase, wherein the phase unwrapping classification model based on the deep learning residual network sets the deviation between the wrapping phase and the real phase to be integer multiples of 2 pi in advance, the classification model based on the deep learning residual network is constructed based on the setting, and the phase unwrapping problem is converted into the semantic segmentation problem; and training by using the constructed training sample. According to the phase unwrapping method and device of the invention, the consumed time of the operation process can be effectively shortened, real-time unwrapping can be realized, and multi-module integration can be realized.

Description

Technical field[0001]The present invention relates to the field of photoelectric imaging, and more particularly to phase demo wrapping methods and apparatus in a Doppler optically coherent chromatographic imaging.Background technique[0002]Doppler optically coherent tomography techniques are widely used in biomedical imaging due to their high resolution, non-invasive, real-time three-dimensional imaging. For fluid research (such as vascular imaging), accurate phase information can provide valuable potential biometric information. However, in an actual imaging system, the phase diagram appears in the measurement length exceeding one wavelength.[0003]For phase-wound problems, the phase deinterlergery is resolved by phase deraving means that the phase is resumed from the (-π, π) range to obtain real phase information. A variety of phased methods have been proposed in the previous research, such as path tracking methods (such as mask cutting methods, chart cutting, minimum discontinuous ...

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Problems solved by technology

However, the calculation process of this method is complex and time-consuming, and it cannot achieve the effect of real-time unwrapping, which is not conducive to the realization of multi-module integration

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