Method and device for large-range high-definition quick registration of ophthalmology OCT image
A large-scale, image technology, applied in the field of OCT, can solve problems such as unacceptable speed, affecting high-definition effect, slow registration speed, etc.
Active Publication Date: 2017-03-15
SHENZHEN CERTAINN TECH CO LTD
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Due to the correlation calculation, it increases with the increase of the registration range, so when the registration range is increased, the speed will be unacceptable; when the registration is performed in the horizontal direction, the registration accuracy in the horizontal direction is low, which affects the high-definition effect
Therefore, the original high-definition registration algorithm is limited by the registration range and registration speed, and the registration speed is slow and the accuracy is low.
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[0035] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0036] refer to figure 1 , figure 1 It is the general flow chart of the present invention, including:
[0037] S1: Select the one with the strongest signal-to-noise ratio from the n OCT images obtained by scanning the human eye with the ophthalmological OCT device as the reference image, and use the remaining n-1 OCT images as the images to be matched and register with the reference image respectively, and obtain m registered OCT images;
[0038] S2: Superimpose the m registered OCT images into a composite high-definition OCT image.
[0039] For the ophthal...
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The invention discloses a method for large-range high-definition quick registration of an ophthalmology OCT image. The method includes selecting from n OCT images obtained by scanning human eyes with an ophthalmology OCT device one image with the highest signal-to-noise ratio as a reference image, and registering the remaining n-1 OCT images as to-be-matched images with the reference image, thereby obtaining m registered OCT images; and synthesizing the m registered OCT images into a synthesized high-definition OCT image. The invention also discloses a device for large-range high-definition quick registration of an ophthalmology OCT image. The device includes an OCT image registering module and a high-definition OCT image synthesizing module. Through the method and device, when any to-be-matched image is registered with the reference image, a frequency domain registration method is used in a vertical direction; and in multiple times of registration in a horizontal direction, dichotomy is utilized to perform iteration, the number of times of circulation is reduced, and the algorithm speed and precision are improved.
Description
technical field [0001] The invention belongs to the technical field of OCT, and in particular relates to a large-scale high-definition rapid registration method and device for ophthalmic OCT images. Background technique [0002] When synthesizing several OCT images obtained by scanning the human eye with the OCT scanning device into a high-definition OCT image, the OCT image with the strongest signal-to-noise ratio is usually selected as the reference image, and the remaining OCT images are used as the images to be matched and the reference image respectively. The graphs are registered vertically and horizontally. When registering in the vertical direction, the principle of correlation is used for registration. Due to the correlation calculation, it increases with the increase of the registration range, resulting in unacceptable speed when the registration range is increased; when the registration is performed in the horizontal direction, the registration accuracy in the ho...
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IPC IPC(8): G06T7/00G06T7/30
CPCG06T7/0012G06T2207/10101G06T2207/30041
Inventor 冯东亮梁湘群
Owner SHENZHEN CERTAINN TECH CO LTD