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

A technology of two adjacent frames and image sequences, applied in astronomical technology and image fields, can solve problems such as inaccurate measurement of velocity field, and achieve the effect of solving inaccurate calculation of velocity field, improving measurement accuracy, and improving accuracy

Active Publication Date: 2018-07-24
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

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

Method used

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  • A multi-scale velocity field measurement method between two adjacent frames in a high-resolution solar image sequence
  • A multi-scale velocity field measurement method between two adjacent frames in a high-resolution solar image sequence
  • A multi-scale velocity field measurement method between two adjacent frames in a high-resolution solar 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 between two adjacent frames in a solar high-resolution image sequence, and belongs to the fields of astronomical technology and image technology. The invention includes the steps: first, extend the image boundary of two adjacent frames of images to preprocess the images; second, decompose the two frames of images into two frames of pyramid images; then, divide the two frames of pyramid images into blocks layer by layer, and measure The block displacement between two frames is then calculated by weighted smoothing and interpolation to calculate the point-by-point displacement between the two frames; then, the displacement between the two frames of all layers of the image is superimposed; finally, the comprehensive displacement and velocity field between the two frames are obtained. The invention can more accurately calculate the velocity field between two frames of images, and effectively improves the measurement accuracy 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 Patents(China)
IPC IPC(8): G06T5/00G06T7/13G06T7/44G06T7/20
CPCG06T7/20G06T2207/20024G06T2207/20021G06T2207/20192G06T5/94G06T5/70
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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