A Method for Suppressing Scattered Noise in Oct Image

A noise suppression and point noise technology, applied in the field of suppressing scatter noise in OCT images, to achieve the effects of less information loss, low signal-to-noise ratio improvement, and less interpolation calculation.

Active Publication Date: 2021-08-06
杭州富扬科技有限公司
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Problems solved by technology

However, these techniques require multiple acquisitions at the same location in order to use averaging or other algorithms to eliminate irrelevant scattered points

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  • A Method for Suppressing Scattered Noise in Oct Image
  • A Method for Suppressing Scattered Noise in Oct Image
  • A Method for Suppressing Scattered Noise in Oct Image

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Embodiment Construction

[0050] The present invention will be described in further 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 invention, not to limit the present invention.

[0051] Embodiments of the present invention and its implementation process are as follows:

[0052] 1) Use a common OCT system to collect a batch of OCT images of pearl samples as the target object; figure 2 is an OCT image of a seawater nucleated pearl.

[0053] 2) Perform curve smoothing for each column of data in the image; the image resolution of the OCT system is 512*512, the length of the image data column is 512, and the bit width is 8 bits, so the range of the gray value is 0-255;

[0054] 2) Perform curve smoothing for each column of data in the image; the image resolution of the OCT system is 512*512, the length of the image data column is 512, and the bit width is 8 bits, so the ...

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Abstract

The invention discloses a method for suppressing scattered point noise of an OCT image. Collect the OCT image of the target object through the OCT system, perform curve smoothing on the column data, perform wavelet transformation on the smoothed column data, construct four window functions with different window widths, and add window processing to the column data after wavelet transformation. The weighted average of the four column data after windowing is performed, and then the inverse wavelet transform is performed to obtain the column data after noise suppression, and the data of each column is spliced ​​to obtain the OCT image after noise suppression. The invention preserves detail features to the greatest extent, improves the detail quality of OCT imaging and is beneficial to improving the speed of noise reduction, and can be used for online noise reduction applications.

Description

technical field [0001] The invention belongs to the field of biological image processing, and relates to an OCT image processing method, in particular to a method for suppressing scattered point noise of an OCT image. Background technique [0002] Optical coherence tomography (OCT) is a high-resolution cross-sectional imaging technique that achieves imaging by collecting photons of back-reflected light from microstructures in the sample surface area and interfering with light from a reference optical path. OCT equipment was first used in the in vivo analysis of biological tissues, mainly in the field of ophthalmology; OCT can be used to perform high-resolution imaging of cornea, retina, lens and other structures, photograph macular diseases, measure the thickness of optic nerve fibers, monitor and diagnose retinal diseases, and measure Retinal structure, etc., so that eye symptoms such as macular degeneration and glaucoma can be diagnosed at an early stage, and there is almo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00G06T5/10
CPCG06T5/002G06T5/10G06T2207/10101G06T2207/20064
Inventor 周扬陆扬陈正伟刘铁兵陈才施秧
Owner 杭州富扬科技有限公司
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