Joint registration method and system for fundus multispectral images

A multi-spectral image and multi-spectral technology, applied in the field of fundus multi-spectral image co-registration method and system, can solve the problems of not considering multi-spectral sequence image correlation information, matching loss error, missing key points, etc., and achieve fast convergence speed , the number of iterations is small, and the effect of improving the accuracy

Active Publication Date: 2018-11-23
SHANDONG NORMAL UNIV
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On the one hand, this type of method relies on the registration between two traditional images, and does not consider the correlation information between the multispectral sequence images; on th

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  • Joint registration method and system for fundus multispectral images
  • Joint registration method and system for fundus multispectral images
  • Joint registration method and system for fundus multispectral images

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[0049] The present invention will be further described below in conjunction with the drawings and embodiments.

[0050] It should be pointed out that the following detailed descriptions are all illustrative and are intended to provide further explanations for the application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0051] It should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate There are features, steps, operations, devices, compo...

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Abstract

The invention discloses a joint registration method and system for fundus multispectral images. According to the method and system, a fundus multispectral image is preprocessed to remove a black edgebackground; SIFT feature points of images in a multispectral sequence are respectively extracted; a matching loss is calculated through matching a loss function according to positions of the extractedSIFT feature points, so as to construct a matrix; coded representation is carried out on the feature points in the images so as to construct a secondary optimization model; a projection power iteration algorithm is executed for the secondary model so as to carry out optimal non-convex solution; and a transformation matrix is solved via calculation through a corresponding relationship among the feature points. The method and system are more comprehensive than information considered by traditional paired image registration; and practices prove that the method and system allow the missing of paired relationships and have certain error correction ability for wrong paired relationships, so that the robustness of the algorithm is ensured and the registration precision is improved.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and system for joint registration of fundus multispectral images. Background technique [0002] Medical image registration is an important research branch of medical image processing. It is a hotspot in medical image processing and has important clinical diagnosis and treatment value. Medical image registration is to seek an ideal geometric transformation for two images, so that the corresponding points of the two images match in terms of spatial structure and anatomical structure, and the result of registration is required to make all anatomical points on the two images, or at least All diagnostic and surgical areas of interest are matched. [0003] Fundus multispectral image is a novel non-invasive detection technology, which can obtain retina and choroid in different depth layers of fundus by irradiating the fundus with different frequency wavelengths, which can be us...

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Application Information

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IPC IPC(8): G06T7/00G06T7/33G06T5/00
CPCG06T5/00G06T7/0014G06T2207/30041G06T7/344
Inventor 郑元杰王钰连剑贾伟宽戚萌
Owner SHANDONG NORMAL UNIV
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