Material imaging weight determination method and device, medium and electronic equipment

A determination method and imaging technology, which can be used in image enhancement, image data processing, instruments, etc., and can solve problems such as inaccurate calculation results.
CN109801243AActive Publication Date: 2019-05-24INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
INST OF HIGH ENERGY PHYSICS CHINESE ACADEMY OF SCI
Publication Date
2019-05-24

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Abstract

The embodiment of the invention provides an imaging method and device, a medium and electronic equipment. The imaging method comprises the steps of acquiring signals and noise of electromagnetic wavespenetrating through a target material in a preset energy interval; constructing a signal-to-noise ratio function of the target material based on the signal and the noise; and maximizing a signal to noise ratio function and determining the weight coefficient of the target material. According to the technical scheme provided by the embodiment of the invention, after energy weighting, the contribution of the low-energy interval to imaging is greater, the signal-to-noise ratio of the image is improved, and the x-ray equivalent attenuation coefficient in the energy region is calculated by utilizing the acquired photon distribution information and the attenuation curve characteristics of photons in different materials, so that the calculation is more accurate.
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Description

technical field

[0001] The present invention relates to the technical field of energy-weighted imaging in projection domain, and in particular, to a method, device, medium and electronic device for determining the imaging weight of materials. Background technique

[0002] At present, when the traditional projection-domain energy-weighted imaging method is used for imaging, the influence of the density difference between the target and the background on the variation trend of the weighting factor has not been explored for different types of materials; moreover, because people mostly use the simulation method, the material size is known Therefore, the influence of the difference between the measured value of the target thickness and the actual value on the imaging results is also not studied in depth. Besides, the actual spectral distribution information is not considered when calculating the weight factor.

[0003] The weighted imaging method based on the projection domain r...

Claims

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