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Method and system for determining three-dimensional rotation based on gradient histogram distribution matching

A gradient histogram and three-dimensional rotation technology, applied in the field of image processing, can solve problems such as tedious, time-consuming, and increased burden on patients

Active Publication Date: 2018-01-09
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The implantation of markers in the body requires surgical anesthesia, which increases the burden on patients
At the same time, it is often cumbersome and time-consuming to extract marker points and match them in medical volume data images

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  • Method and system for determining three-dimensional rotation based on gradient histogram distribution matching
  • Method and system for determining three-dimensional rotation based on gradient histogram distribution matching
  • Method and system for determining three-dimensional rotation based on gradient histogram distribution matching

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in 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.

[0038] Such as figure 1 As shown, in one embodiment, a method for determining a three-dimensional rotation amount based on gradient histogram distribution matching is provided, the method comprising:

[0039] Step 101, acquiring three-dimensional volume data to be registered.

[0040] The 3D volume data to be registered includes: reference 3D volume data and detected 3D volume data. In this embodiment, the three-dimensional image registration refers to rigid registration, that is, there is only rotation and translation transformation between the reference three-dimensional volume data and the det...

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Abstract

The invention provides a method for determining the amount of three-dimensional rotation based on gradient histogram distribution matching. The method comprises the steps of acquiring three-dimensional data to be registered, calculating the three-dimensional local gradient corresponding to the three-dimensional data to be registered through a three-dimensional Gauss gradient kernel function, constructing an amplitude weighted directional distribution histogram corresponding to the three-dimensional local gradient by accumulating the amplitude and direction values of all voxels of the three-dimensional local gradient, and carrying out histogram normalization matching on the amplitude weighted directional distribution histogram to determine the amount of three-dimensional rotation. Compared with the traditional image registration technology, the method and the system have the advantages of simpleness and quickness.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to a method and system for determining a three-dimensional rotation amount based on gradient histogram distribution matching. Background technique [0002] 3D image registration is the process of geometrically aligning two or more images containing the same scene or object, one of which is a reference image and the other is a test image. Image registration technology is mainly used in medical computerized tomography, magnetic resonance imaging, tumor monitoring, treatment verification, and comparative analysis of patients' anatomical maps before and after. Image registration can usually be divided into rigid registration and non-rigid registration. The transformation involved in rigid registration usually only includes translation and rotation, which achieves the overall alignment of two images, with low computational complexity and high robustness. [0003] In cl...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/33
CPCG06T2207/10012G06T2207/30004
Inventor 周武张丽娟谢耀钦
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI