Image high-gray-scale line filtering method and system

Abstract

The invention discloses an image high gray line filtering method and system, and relates to the technical field of space target monitoring. The method comprises the following steps: acquiring a spacetarget monitoring original image; calculating a row sum and a column sum of pixel values of each row of pixel points according to the space target monitoring original image; determining a high-gray-scale line row and a high-gray-scale line column with high-gray-scale lines by utilizing the row sum and the column sum; determining high-gray-scale pixel points according to the high-gray-scale line row and the high-gray-scale line column; and carrying out median filtering on the high-gray-scale pixel points to obtain a space target monitoring image of which the high-gray-scale lines are filtered out. According to the invention, the rows and columns with high-gray-scale lines are determined through the row sum and the column sum of the pixel values; the pixel points of the space target and thepixel points of the non-space target in the high-gray-scale line row and the high-gray-scale line column are further determined, the calculation method is simple, the high-gray-scale pixel points in the space target monitoring original image can be filtered out at a time, and the pixel points containing the space target are prevented from being filtered out while the high-gray-scale line is filtered out.

Description

technical field [0001] The invention relates to the technical field of space target monitoring, in particular to a method and system for filtering high grayscale lines in an image. Background technique [0002] Space target monitoring is to use ground-based or space-based optical platforms to conduct imaging observations on space targets. Space targets include specific observation stars, artificial satellites, and aircraft debris. The background of space targets is dark deep space. The original image of space target monitoring There is background noise interference, the background noise includes space radiation noise, noise and CCD dark current noise, etc. The characteristics of the original image of space target surveillance are that the space target is point-shaped, small in size, without any shape and texture information, and has weak brightness. It has similar time domain and frequency domain characteristics to stars and noise, and the space target is easily lost in the ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method and system for filtering high-grayscale lines in an image, which solves the problem of complicated calculation process in existing methods for removing high-grayscale lines

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