A multi-scale velocity field measurement method for adjacent two frames in a sun high-resolution image sequence

A technology of two adjacent frames and an image sequence, which is applied in the field of astronomy and images, can solve the problem of inaccurate measurement of the velocity field, achieve the effect of solving the inaccurate calculation of the velocity field, improving the measurement accuracy, and improving the accuracy

Active Publication Date: 2016-07-20
KUNMING UNIV OF SCI & TECH
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Problems solved by technology

[0006] The invention provides a method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence. The method adopts a Gaussian convolution multi-scale method on the basis of weighted local correlation tracking technology (WLCT), Calculate the velocity field between two frames of images more accurately, and solve the problem of inaccurate measurement of the velocity field at the calculation of large displacement motion, target rotation, and moving target boundary by traditional single-scale and traditional multi-scale methods. To a certain extent, the accuracy of the velocity field calculation is improved

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  • A multi-scale velocity field measurement method for adjacent two frames in a sun high-resolution image sequence
  • A multi-scale velocity field measurement method for adjacent two frames in a sun high-resolution image sequence
  • A multi-scale velocity field measurement method for adjacent two frames in a sun high-resolution image sequence

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Embodiment 1

[0031] Embodiment 1: as Figure 1-12 As shown, a method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence. First, the image preprocessing is performed on the image by extending the image boundary of the two adjacent frames; secondly, the two frames are respectively The image is decomposed into two frames of pyramid images; then, the two frames of pyramid images are divided into blocks layer by layer, the block displacement between the two frames is measured, and the point-by-point displacement between the two frames is calculated by weighted smoothing and interpolation; then, all layers of the image are superimposed The displacement between the two frames; finally, the comprehensive displacement and velocity field between the two frames are obtained.

[0032] The specific steps of the method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence are ...

Embodiment 2

[0042] Embodiment 2: as Figure 1-12 As shown, a method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence. First, the image preprocessing is performed on the image by extending the image boundary of the two adjacent frames; secondly, the two frames are respectively The image is decomposed into two frames of pyramid images; then, the two frames of pyramid images are divided into blocks layer by layer, the block displacement between the two frames is measured, and the point-by-point displacement between the two frames is calculated by weighted smoothing and interpolation; then, all layers of the image are superimposed The displacement between the two frames; finally, the comprehensive displacement and velocity field between the two frames are obtained.

[0043] The specific steps of the method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence are ...

Embodiment 3

[0077] Embodiment 3: as Figure 1-12 As shown, a method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence. First, the image preprocessing is performed on the image by extending the image boundary of the two adjacent frames; secondly, the two frames are respectively The image is decomposed into two frames of pyramid images; then, the two frames of pyramid images are divided into blocks layer by layer, the block displacement between the two frames is measured, and the point-by-point displacement between the two frames is calculated by weighted smoothing and interpolation; then, all layers of the image are superimposed The displacement between the two frames; finally, the comprehensive displacement and velocity field between the two frames are obtained.

[0078] The specific steps of the method for measuring the multi-scale velocity field between two adjacent frames in the solar high-resolution image sequence are ...

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Abstract

The invention relates to a multi-scale velocity field measurement method for adjacent two frames in a sun high-resolution image sequence and belongs to the astronomical and image technical field. The method comprises the following steps: to begin with, carrying out image pretreatment: expanding image boundary of the adjacent two frames; then, decomposing the two frames into two frame pyramid images; next, carrying out segmentation on the two frame pyramid images layer by layer; measuring block displacement between the two frames; obtaining point-by-point displacement amount between the two frames through weighted smoothing and interpolating calculation; then, superposing the displacement amount between the two frames of all layers of the images; and finally, obtaining comprehensive displacement amount and velocity field between the two frames. The method can calculate the velocity field between the two frames more accurately, and effectively improves measurement precision of the velocity field.

Description

technical field [0001] The invention relates to a method for measuring a multi-scale velocity field between two adjacent frames in a solar high-resolution image sequence, and belongs to the fields of astronomical technology and image technology. Background technique [0002] The solar images contain activities of various scales, which may include both large-scale motions (strong flares, CMEs, sunspots, flares, dark streaks, etc.) Leman bombs and magnetohydrodynamic waves at various scales, etc.). The small-scale changes superimposed on the large-scale will be submerged by the large-scale motion, and the measurement of the small-scale velocity field becomes very difficult. Therefore, the velocity field can be analyzed with the help of multi-scale methods, so that each different resolution can be analyzed separately images for more detailed analysis. Solving the problem that the velocity field cannot be accurately measured at a single scale by studying multiple scales can pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/00G06T7/40G06T7/20
CPCG06T5/002G06T5/008G06T7/20G06T2207/20021G06T2207/20024G06T2207/20192
Inventor 季凯帆王杭王锋邓辉杨云飞冯松
Owner KUNMING UNIV OF SCI & TECH
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