Three-dimensional image iteration registration method

Abstract

The invention discloses a three-dimensional image iterative registration method, which comprises the following steps: (1) acquiring a reference image and a target image, calculating the central coordinates of each vertebral section of the reference image and the target image, and obtaining an initial transformation relationship between the reference image and the target image; (2) generating a plurality of reference cross-section images in the reference image, and intercepting the target image according to the step (1) to obtain a corresponding target cross-section image; (3) performing optimal similarity matching on a certain target cross-section image and the corresponding reference cross-section image to obtain the transformation quantity, and calculating to obtain the pose of the corresponding target cross-section coordinate system; (4) judging whether the pose increments of the plurality of target section coordinate systems are all smaller than a set threshold, and if so, calculating a final transformation relation between the reference image coordinate system and the target image coordinate system; otherwise, updating the transformation quantity and the pose of the corresponding target section coordinate system, and repeating the step. According to the invention, accurate registration between the two vertebral section images can be rapidly completed, the efficiency is high, the adaptability is high, and a good registration effect can be achieved for poor image data.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a three-dimensional image iterative registration method. Background technique [0002] With the development of biomedical engineering and computer technology, medical imaging provides multimodal medical images for clinical diagnosis. In today's clinical neighborhood, these medical images are playing an increasingly important role. They are not only used in medical diagnosis, but also in the formulation of surgical planning, radiotherapy planning, tracking of pathological changes, and evaluation of treatment effects. aspect. [0003] Medical image registration technology is an important technical link in medical imaging technology. Its essence is to make the corresponding points of the two images reach the exact same spatial position or anatomical structure by finding a (or a series of) spatial transformation relationship. , so that all anatomical points on the two image data, or...

AI Technical Summary

Problems solved by technology

[0004] However, the registration methods in the prior art have technical problems such as large registration errors and low registration efficiency.

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