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Boundary reconstruction sharpening method for two-phase volume fraction image

An image and share technology, applied in the field of image processing, can solve the problems of smoothness, different threshold processing effects, and non-adaptive thresholds, and achieve the effect of improving accuracy

Active Publication Date: 2021-11-05
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0004] The existing image improvement technology can only improve the boundary definition, and it is difficult to smooth the boundary of the low-resolution image boundary; the threshold used by the algorithm is not adaptive, it needs to be set manually, and the processing effect of different thresholds is different

Method used

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  • Boundary reconstruction sharpening method for two-phase volume fraction image
  • Boundary reconstruction sharpening method for two-phase volume fraction image
  • Boundary reconstruction sharpening method for two-phase volume fraction image

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Embodiment Construction

[0017] Such as figure 1 As shown, this embodiment relates to a boundary reconstruction and sharpening method for two-phase volume fraction images, by performing discrete phase marking on the interpolated image of the original volume fraction distribution image, and calculating the mask image of each discrete phase and The centroid or centroid of the discrete phase is sharpened and then superimposed on each mask image to obtain a reconstructed and sharpened volume fraction distribution image.

[0018] In this embodiment, the two-phase volume share distribution image is β i , where: i=1,..., N is the position index of the image pixel, and N is the total number of pixels in the image.

[0019] The interpolation used to convert the low-resolution original volume fraction distribution image β i Interpolation extended to high-resolution image β′ k , where: i=1,...,N is the position index of the image pixel, N is the total number of pixels in the image, k=1,...,Nφ 2 , φ is the in...

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Abstract

A boundary reconstruction sharpening method for a two-phase volume fraction image comprises the following steps: performing discrete phase marking on an image obtained after interpolation is performed on an original volume fraction distribution image, calculating a mask image of each discrete phase and a centroid or centroid of each discrete phase, sharpening each mask image, and then superposing the sharpened mask images to obtain a reconstructed and sharpened volume share distribution image. According to the method, different thresholds of different objects are automatically generated according to the image, and reconstruction sharpening of the phase boundary of the two-phase volume fraction image can be realized while the image is refined.

Description

technical field [0001] The present invention relates to a technique in the field of image processing, in particular to a boundary reconstruction sharpening method for two-phase volume fraction images. Aiming at the low-resolution two-phase volume fraction images measured by sensors such as silk screens, the method of reconstructing and sharpening the phase boundaries. Background technique [0002] Two-phase flow includes material flow between solid-liquid, vapor-liquid, and solid-vapor. Its visual monitoring and measurement is of great significance. The existing technology uses wire mesh measurement sensors or conductivity probes to obtain the two-phase volume fraction distribution. image. However, limited by the performance of the sensor, the resolution of the obtained two-phase volume fraction distribution image is low, and the phase boundary is stepped, which cannot accurately reflect the phase distribution state. [0003] The description of the correlation processing a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T3/40
CPCG06T3/4023G06T5/73
Inventor 熊进标杨宜昂卢川张静刘晓晶
Owner SHANGHAI JIAO TONG UNIV
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