Three-dimensional rapid reconstruction system for double-view-angle X-ray perspective imaging

A technology for reconstructing systems and imaging systems, applied in image enhancement, neural architecture, image analysis, etc., can solve problems such as the inability to meet the needs of engine internal combustion profile testing, and achieve the effects of avoiding gradient disappearance, accelerating network training, and simplifying utilization.

Pending Publication Date: 2022-02-01
内蒙航天动力机械测试所 +1
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Problems solved by technology

[0006] The present invention provides a three-dimensional rapid reconstruction system of dual-view X-ray perspective imaging to solve the problem that the existing solid rocket motor ground test DR test method cannot meet the test requirements of the internal combustion profile of the engine

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  • Three-dimensional rapid reconstruction system for double-view-angle X-ray perspective imaging

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Embodiment Construction

[0027] The technical problem to be solved by the present invention is that the existing solid rocket motor ground test DR test method cannot meet the test requirements of the internal combustion profile of the engine, and a new three-dimensional rapid reconstruction method based on data-driven dual-view X-ray perspective imaging is provided.

[0028] This method consists of the following three modules:

[0029] Design of fast acquisition system for perspective projection data and dual perspective data acquisition: This module starts from the hardware first, and based on the research on the ray test method of the internal structure section of the engine, determines the relevant component indicators of the X-ray data acquisition system, geometric parameters and physical parameters of the imaging system. Carry out research on hardware construction technology of X-ray data acquisition system.

[0030] Based on dual-view projection 3D structural feature extraction and cross-dimensi...

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Abstract

The invention relates to the field of engine testing, in particular to a three-dimensional rapid reconstruction system for double-view-angle X-ray perspective imaging. The system comprises the following steps: a carrying out double-view-angle X-ray imaging system and double-view-angle data acquisition, and carrying out X-ray data acquisition by adopting orthogonal ray arrangement; representing a generative network model as a basic framework based on double-view-angle projection three-dimensional structure feature extraction and cross-dimension fusion, performing feature extraction on a double-view-angle projection image through a residual network, gradually increasing the channel number of a feature map by using cascaded convolution operation, and mapping a two-dimensional projection domain feature into a three-dimensional space domain feature; carrying out three-dimensional fast reconstruction optimization based on features, coding three-dimensional depth information and channel information in the same dimension based on two-dimensional feature values of double-view projection data, and using two-dimensional convolution for replacing three-dimensional convolution features to carry out processing and reconstruction. According to the invention, the rebuilt spatial resolution is improved, and the dynamic profile test in the engine combustion process is realized.

Description

technical field [0001] The invention relates to the field of engine testing, in particular to a three-dimensional rapid reconstruction system for dual-view X-ray perspective imaging. Background technique [0002] The CT imaging mode of non-destructive testing can use the attenuation information of X-ray penetrating objects to reconstruct and obtain two-dimensional tomographic images or three-dimensional images of objects without damaging the objects, which can intuitively characterize the internal structure of objects. It has broad application prospects in the fields of material manufacturing, especially in object structural recognition. [0003] The dynamic single-view projection test technology in the engine test process is used for dynamic testing of the combustion surface retreat state of the end-fired solid rocket motor. During the ground ignition test of the end-burning solid rocket motor, the DR equipment with a perspective is arranged horizontally to test the dynami...

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Application Information

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IPC IPC(8): G06T17/00G06T7/00G06N3/04G06N3/08G06K9/62G06V10/80
CPCG06T17/00G06N3/08G06T7/0002G06T2207/10116G06T2207/20081G06N3/045G06F18/253
Inventor 徐星陆明程博高磊陈平杨全海蒋韫韬徐艳玲王宣
Owner 内蒙航天动力机械测试所
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