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Image reconstruction method based on axially symmetrical parameter distribution

A parameter distribution and image reconstruction technology, applied in image data processing, 2D image generation, instruments, etc., can solve problems such as complex structure, achieve high system reliability, good stability, reduce complexity and cost

Active Publication Date: 2013-04-03
BEIHANG UNIV
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However, the structure of this design is more complicated

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  • Image reconstruction method based on axially symmetrical parameter distribution
  • Image reconstruction method based on axially symmetrical parameter distribution
  • Image reconstruction method based on axially symmetrical parameter distribution

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[0025] In this example, taking the flame parameters with axisymmetric temperature and gas component concentration distribution produced by a flat-flame combustion furnace as an example, the axisymmetric temperature distribution is imaged by single-view fan-beam projection based on laser tunable laser absorption spectroscopy technology reconstruction. The temperature distribution characteristics along the axial direction measured by the thermocouple are as follows: figure 1 As shown, along the axial direction H calculated from the fuel ratio value 2 O gas concentration distribution characteristics such as figure 2 shown.

[0026] Below in conjunction with accompanying drawing, the present invention will be further described:

[0027] Step 1, select the center frequencies of the spectral lines as 7185.6cm -1 and 7444.4cm -1 The two spectral lines are experimentally studied.

[0028] Step 2, the central wavelengths of the two distributed feedback tunable semiconductor lase...

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Abstract

The invention provides an image reconstruction method based on axially symmetrical parameter distribution. The image reconstruction method includes: obtaining corresponding projection measuring values by utilizing a single visual angle projection covering a tested parameter distribution field; solving an equation set of parameter values according to a coefficient matrix and the projection measuring values; reducing unknown numbers of the equation set by utilizing the distribution characteristics of the axially symmetrical parameters of a tested area; and solving a least square solution of the equation set to further obtain an axially symmetrical parameter distribution image. The image reconstruction method is simple in system structure, high in reliability and low in cost and has wide application prospect.

Description

technical field [0001] The invention relates to an image reconstruction method based on axisymmetric parameter distribution, in particular to a single-view projection image reconstruction method that can effectively simplify the system structure when the parameters meet the axisymmetric distribution characteristics. Background technique [0002] Axisymmetric parametric distribution characteristics are widely found in industrial applications. For example, the flat flame combustion furnace is used to generate a stable, uniform, laminar spread flame, which has a wide range of applications in the research fields of flame calibration, flame stabilization process, heat transfer process, flame speed and shape. During the combustion process of the flat flame combustion furnace, the flame generated by it is required to be accurately controlled to ensure that the temperature of the flame, the concentration of gas components and the flow pattern are in a stable state. However, due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T11/00
Inventor 徐立军曹章刘畅陈露露
Owner BEIHANG UNIV
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