Small target semantic segmentation sun dark bar detection method combined with target detection

Abstract

The invention discloses a small target semantic segmentation sun dark bar detection method combined with target detection. The method comprises the following steps: firstly, preprocessing an Halpha full-solar-surface image, manually labeling the image, and dividing the image into a training set and a verification set of a detection model in proportion; constructing a semantic segmentation network,obtaining an overall semantic segmentation model through a data set training network, and selecting a training model with the best test set detection effect; cutting the small target image blocks according to a pixel-level real mark graph provided by the data set, and making a small target data set; training a target detection network through the small target detection data set obtained in the third step to obtain a target detection model; designing a semantic segmentation network for small target segmentation, and training the network by using the obtained small target segmentation data set;and finally, inputting the test image into the overall semantic segmentation model and the small target detection network. The method greatly improves the overall performance of a conventional sun dark strip recognition method, and improves the detection precision of weak and small dark strips and the edges of the dark strips.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a small target semantic segmentation sun dark stripe detection method combined with target detection. Background technique [0002] The sun's dark streak is a structure filled with low-temperature and high-density plasma that exists in the corona. There are no small differences between the dark bars, such as their appearance, size, and stable existence time. Some streaks take up half of the sun's surface, while others are just a tongue of flame at the edge of the sun's surface. In the observation of the full-helix solar image, because the dark stripe has a significant absorption effect on the background radiation of the bottom atmosphere, the dark stripe is lower than the corona temperature, so it appears as a slender dark black stripe structure under the solar background. Typically, dark streaks are cooler but denser than the surrounding corona. In the H-band observa...

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Problems solved by technology

[0005] The object of the present invention is to provide a small target semantically segmented sun dark stripe detection method combined with target detection, which is used to solve the problem that the existing dark stripe detection method will make the intensity too low for images with uneven intensity on the Hα full sun surface image. The position of the position is recognized as a dark bar, and the intensity features of these positions have a strong similarity with the dark bar, which leads to the problems of missed and misjudged images and low detection accuracy in the network.

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