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Image registration method and device

An image registration and image technology, which is applied in image enhancement, image analysis, image data processing, etc., can solve the problems of poor registration effect in local areas of the image and long time-consuming registration algorithm, etc., to speed up the registration speed, The effect of accurate image registration

Active Publication Date: 2019-02-12
NEUSOFT MEDICAL SYST CO LTD
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Problems solved by technology

However, the non-rigid image registration technology still faces some problems that need to be improved in actual clinical applications, such as the poor registration effect on the local area of ​​the image, and the registration algorithm takes a long time, etc.

Method used

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  • Image registration method and device
  • Image registration method and device

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Embodiment Construction

[0026] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatuses and methods consistent with aspects of the present disclosure as recited in the appended claims.

[0027] At present, the common non-rigid image registration method is the registration method based on mutual information. Mutual information is an information measure in information theory, which is used to represent the degree of correlation between two variables. Mutual information can be regarded as the amount of information contained in one random variable about another random vari...

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Abstract

The invention provides an image registration method and device, wherein the method comprises the following steps of: acquiring a registration reference image and an image to be registered, performinginitial registration on the image to be registered, and obtaining an initial registration image; dividing a first local image block and a second local image block corresponding to each other in the initial registration image and the registration reference image according to a predetermined division strategy; performing local registration on the first local image block and the second local image block to obtain a deformation field of the first local image block; applying the deformation field of the first local image block to the initial registration image to obtain an accurate registration image. By implementing the embodiment of the present application, the registration accuracy can be effectively improved, and the registration time can be reduced.

Description

technical field [0001] The present disclosure relates to the field of medical devices, in particular to the technical field of image imaging of an image registration method. Background technique [0002] Medical image registration refers to using a medical image as a reference (usually called "registration reference image"), and finding a spatial transformation for other medical images (usually called "to-be-registered images") The relationship between the image to be registered and the corresponding points on the registration reference image can be consistent in space. The result of the registration should match all points of interest on the two images. [0003] In practice, medical image registration can be divided into rigid registration and non-rigid registration. The difference between the two is whether the transformation solved by the registration algorithm is rigid or non-rigid. The so-called rigid transformation means that the distance between any two points in th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T7/33
CPCG06T7/33G06T2207/30004G06T2207/10088G06T2207/10081G06T2207/10104
Inventor 朱传伟李广白璐
Owner NEUSOFT MEDICAL SYST CO LTD
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