Block three-dimensional reconstruction method based on two-dimensional x-ray image sequential filtering back projection

Abstract

The invention discloses a partitioning three-dimensional reconstruction method based on two-dimensional x-ray image sequential filtering back projection, which comprises the following steps: firstly, cubic blocks are built according to the initial block number; secondly, a block reconstruction result is obtained through partial reconstruction of each cubic block; thirdly, the reconstruction results of all the blocks are combined; fourthly, the number set of all the blocks is calculated according to the block reconstruction results, the construction is performed according to the first three steps, the time complexity is fed back, and a feedback time complexity set can be obtained as long as all the elements of the block number set are calculated; and finally, the block number with the minimal time complexity is selected from the feedback time complexity set to serve as the optimal block number, the first three steps are carried out again, and the optimal block reconstruction result is obtained, thereby completing the three-dimensional reconstruction. Through the invention, the multithread programming technology can be fully used in the three-dimensional reconstruction field, thereby greatly improving the reconstruction speed.

Description

technical field [0001] The invention relates to a block reconstruction method based on filtered back projection, in particular to a three-dimensional reconstruction acceleration technology based on filtered back projection for three-dimensional imaging based on two-dimensional X-ray image sequences. Background technique [0002] The 3D reconstruction technology based on X-ray has been paid more and more attention in the fields of industry, medical treatment and education in recent years because of its advantages of good observation dimension information and low radiation dose. The X-ray 3D imaging system based on the mobile C-arm is a typical application of this 3D reconstruction technology. Its main feature is that it performs 3D reconstruction on the 2D X-ray image sequence shot around the object based on the idea of ​​filtered back projection, but how to do it? The reconstruction efficiency of the technology is low, and the real-time reconstruction effect cannot be achiev...

AI Technical Summary

Problems solved by technology

The X-ray 3D imaging system based on the mobile C-arm is a typical application of this 3D reconstruction technology. Its main feature is that it performs 3D reconstruction on the 2D X-ray image sequence shot around the object based on the idea of ​​filtered back projection, but how to do it? The reconstruction efficiency of the technology is low, and it cannot achieve real-time reconstruction effect for 2D X-ray image sequences with higher resolution (such as 1024×1000)

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