Cloud and aerial total cloud amount detection method and system

A cloud detection and all-sky technology, applied in the field of meteorological detection, can solve the problem of low calculation accuracy of the total cloud amount of the all-sky cloud map, and achieve the effect of avoiding calculation errors, avoiding sun tracking devices, and accurate automation

Active Publication Date: 2013-12-25
CHINESE ACAD OF METEOROLOGICAL SCI
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Problems solved by technology

However, it has been found that such a method has low calculation accu

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  • Cloud and aerial total cloud amount detection method and system
  • Cloud and aerial total cloud amount detection method and system
  • Cloud and aerial total cloud amount detection method and system

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Embodiment Construction

[0062] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0063] Such as figure 1 As shown in , wherein the image acquisition step, the sky type determination step and the cloud detection step can constitute the cloud detection method according to the present invention, preferably including the exposure time determination step before the image acquisition step. In addition, by adding the total cloud amount calculation step after the cloud detection step of the cloud detection method, the total cloud amount detection method according to the present invention can be constituted.

[0064] Image Acquisition Steps

[0065] The image acquisition step is to acquire the cloud image of the sky at a predetermined moment by using the image acquisition device. The sky cloud map contains an image of a predetermined area in the observed sky. For cloud detection, especially in the important applicatio...

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Abstract

The invention discloses a cloud and aerial total cloud amount detection method and system. The system comprises an image obtaining device, a sky type confirming module, a cloud detection module and an aerial total cloud amount computing module, wherein the image obtaining device is used for obtaining an aerial cloud picture at a preset moment, the sky type confirming module is used for confirming the type of the sky at the preset moment, the cloud in the cloud picture is detected through the cloud detection module according to partition threshold values, and the aerial total cloud amount computing module is used for computing the aerial total cloud amount according to the ratio of the cloud in the aerial cloud picture to the whole aerial cloud picture. The cloud in the cloud picture is detected through the aerial cloud picture partition threshold values corresponding to the different sky types, the influences of different weather conditions on the detection result of the aerial cloud picture are taken into full consideration, and the accuracy of the cloud detection is made to be higher.

Description

technical field [0001] The invention relates to the field of meteorological detection, in particular to a method and system for detecting clouds in the sky. Background technique [0002] Cloud cover refers to the percentage of clouds covering the view of the sky. Observations of cloud cover include total cloud cover and low cloud cover. The total cloud amount refers to the total number of the sky covered by all clouds at the time of observation, and the low cloud amount refers to the number of the sky covered by the clouds of the low cloud family, both recorded as integers. [0003] The existing ground-based total cloud cover observation methods can be divided into artificial visual method, inversion method and remote sensing imaging method. Among them, the manual visual observation method is the most commonly used cloud cover observation method at most domestic meteorological stations, but this method has a lot of subjectivity and has become a bottleneck restricting the a...

Claims

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Application Information

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IPC IPC(8): G01W1/00
Inventor 杨俊吕伟涛马颖姚雯
Owner CHINESE ACAD OF METEOROLOGICAL SCI
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