Test tube structure

Abstract

The invention discloses a test tube structure, which comprises a glass tube body and a glass plug; the glass tube body is provided with an opening, and the glass plug is arranged at the opening of theglass tube; the glass plug and the glass tube body are formed to be a sealed cavity body, and a first marker is arranged in the glass tube body, and closes to the bottom part of the glass tube body;one side of the glass plug is provided with a second marker, and the second marker is inserted to the glass tube body; the first marker and the second marker are deviated from the axial line of the center of the glass tube body. When a projection image is processed by the test tube structure, a camera center line and a rotating center bias are calculated by means of a projection sine drawing of afault where the first marker and the second marker are located, thus the positioning rotating center speed is significantly promoted; meanwhile, a slice artifact acquired through restructuring the sine drawing after positioning the rotating center is few, the section outline and the shape can comparatively meet the real condition. The test tube structure is used for loading a sample during a tomography process of an optical projection layer.

Description

Technical field [0001] The invention relates to the technical field of test tube structures. Background technique [0002] Optical projection tomography (OPT) technology is a technology to reconstruct object slice images on the basis of projection images. This technology uses multi-angle projection to reconstruct a series of projected sinograms with the obtained projection data. The slice tomogram is obtained through the reconstruction algorithm. [0003] The current OPT reconstruction process has the problem of correcting the deviation between the projection center and the rotation center. In the prior art, the above problems are solved by directly correcting the projection sinogram rotation center deviation and registering the reconstructed image. The main methods include iterative method and based on The centroid motion trajectory is calculated based on the center of rotation and the image registration algorithm. However, the above methods need to load the test tube with the sa...

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Problems solved by technology

[0003] At present, there is a problem that the deviation between the projection center and the rotation center needs to be corrected in the process of OPT reconstruction tomography. The above problems are solved in the prior art by directly correcting the deviation of the rotation center of the projected sinogram and registering the reconstruction map. The main methods are iterative method, based on The rotation center calculation method of the center of mass motion trajectory and the image registration algorithm, but the above methods all need to load the test tube with the sample on a motor device used to drive the test tube to rotate in the process of processing, so as to obtain the sample at different angles. Projecting images, and then converting the projected images into corresponding sinograms, and since all of the conventional test tubes are used without any auxiliary measures, it leads to the correction of a series of sinogram rotation center deviations and the reconstruction image using the above method The registration process is relatively cumbersome and slow

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