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
CN105787901AActive Publication Date: 2016-07-20KUNMING UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
KUNMING UNIV OF SCI & TECH
Publication Date
2016-07-20

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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.
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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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