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A yolo-based meteorological satellite cloud image target detection method

A satellite cloud image and target detection technology is applied in the field of meteorological satellite cloud image recognition and detection, which can solve the problems that visible light cloud images cannot be routinely detected and the utilization rate is low, and achieve the effect of improving detection speed and detection accuracy and clear texture.

Active Publication Date: 2022-07-26
JILIN UNIV
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Problems solved by technology

Similar to it is the visible light cloud image, which is obtained by direct measurement of the reflection of the cloud layer on the light. The advantage of the visible light cloud image is that the shape and texture of the cloud detected by it are better (better than the infrared cloud image), but the visible light cloud image is in insufficient light. routine detection is not possible
In fact, in actual production, there are cases where the utilization rate of channels other than infrared cloud images is low

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  • A yolo-based meteorological satellite cloud image target detection method
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Embodiment Construction

[0048] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can refer to the description and implement accordingly.

[0049] The invention provides a Yolo-based meteorological satellite cloud image target detection method, which combines the images of the two channels according to the characteristics of different weather phenomena in an infrared channel (wavelength 10.5-12.5 micrometers) and a visible light channel (wavelength 0.4-0.78 micrometers). , and then use the YOLO algorithm to identify typical weather phenomena in the cloud map.

[0050] 1. Fusion method of visible light cloud image and infrared cloud image.

[0051]First of all, by observing the VIS image (visible light cloud map), it can be seen that there are two kinds of data in the picture that cannot obtain useful information. One is that there is no data that cannot be measured by light, and the background shows a large are...

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Abstract

The invention discloses a Yolo-based meteorological satellite cloud image target detection method. Divide the multiple visible light cloud maps into: the first visible light cloud map, the second visible light cloud map and the third visible light cloud map; wherein, the proportion of invalid information in the first visible light cloud map is ψ 1 satisfy ψ 1 <ψ min ; The proportion of invalid information in the second visible light nephogram ψ 2 satisfy ψ min ≤ψ 2 ≤ψ max ; The proportion of invalid information in the third visible light nephogram ψ 3 satisfy ψ 3 >ψ max ;ψ min is the lower limit of the invalid information threshold, ψ max is the upper limit of the threshold value of invalid information; 3. fuse the first visible cloud image with its corresponding infrared cloud image to obtain a fusion cloud image; combine the infrared cloud image corresponding to the first visible cloud image, the fusion cloud image and the third visible cloud image to form a cloud atlas to be detected; 4. The Yolo algorithm is used to perform target detection on the cloud images in the detection cloud image set, and identify the typical weather phenomena in the cloud images.

Description

technical field [0001] The invention belongs to the technical field of meteorological satellite cloud image identification and detection, in particular to a Yolo-based meteorological satellite cloud image target detection method. Background technique [0002] Meteorological satellites are an important meteorological tool, and among the data transmitted by meteorological satellites, the most important are the meteorological cloud image files, which play an important role in weather forecasting, especially precipitation analysis. Meteorological satellites can obtain daytime visible light cloud images, day and night infrared cloud images and water vapor distribution maps, etc. and transmit them by fax, and provide domestic and foreign meteorological data utilization stations for reception and utilization. For weather forecasting, the content of satellite cloud image analysis includes distinguishing cloud images of different channels, such as infrared cloud images and visible li...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/50G06T7/00G06N3/04G06N3/08G06K9/62G06V10/774
CPCG06T5/50G06T7/0002G06N3/04G06N3/084G06T2207/10048G06T2207/10004G06T2207/20221G06T2207/30192G06F18/214
Inventor 何丽莉付豪白洪涛曹英晖
Owner JILIN UNIV
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