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Method for realizing suppression of strong light spot in sky imaging

An implementation method and strong light technology, which are applied in the directions of camera devices, static indicators, instruments, etc., can solve the problems of inability to estimate positioning in advance, inaccuracy, inconvenient installation and debugging, etc., to suppress strong light spots and realize low cost. , the complete effect of the effective imaging area of ​​the sky

Inactive Publication Date: 2019-05-10
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, there will be imaging of metal occlusions in the imaged picture, introducing inaccuracies to the calculation of cloud amount or cloud shape
In addition, this method needs to use a mechanical transmission system, which leads to an increase in the volume of the instrument, requires a large power, and is inconvenient for installation and debugging.
As for the lighting of high-rise buildings, because the designer cannot estimate the positioning in advance, this solution cannot be solved at this time

Method used

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  • Method for realizing suppression of strong light spot in sky imaging
  • Method for realizing suppression of strong light spot in sky imaging
  • Method for realizing suppression of strong light spot in sky imaging

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0035] figure 1 It is a structural schematic diagram of the sky imager imaging system of the present invention, which is used to assist in explaining the implementation step 1 of the present invention.

[0036] figure 2 It is a schematic diagram of overlapping pixels of the liquid crystal display 2 and the pixel of the imaging sensor chip 3 of the present invention, which is used to assist in explaining steps 2 and 3 of the present invention.

[0037] image 3 It is a schematic diagram of the imaging of the sky with strong light spots and its highlight overflow before the realization of the present invention, which is used to assist in explaining the realization steps 4, 5 and 6 of the present invention.

[0038] Figure 4 It is a schematic diagram of imaging of the sky with suppressed strong light and bright spots after adjustment, and is used to assist in explaining the implementation step 7 of the present invention.

[0039] During the implementation of the present inv...

Embodiment 2

[0065] This embodiment is basically the same as Embodiment 1, except that the imaging sensor chip 3 is a CMOS chip.

Embodiment 3

[0067] This embodiment is basically the same as Embodiment 1, except that the imaging sensor chip 3 uses an image intensifier.

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Abstract

The invention relates to a method for realizing suppression of strong light spot in sky imaging, comprising the following steps: setting a liquid crystal display, an imaging sensor chip and a system controller, and closely placing the liquid crystal display on an imaging surface of the imaging sensor chip; establishing a correspondence between the pixel of the liquid crystal display and the picture element of the sensor chip; using the system controller to control the liquid crystal display to work as the highest transmittance such that the imaging sensor chip takes a photo, determining whether there is a strong light spot through the photo; if so, using the system controller to control the liquid crystal display to work as the lowest transmittance, obtaining the coordinates of the pictureelement of the strong light spot in the imaging sensor chip by a new photo, controlling the pixel above the picture element of the strong light spot in the imaging sensor chip in the liquid crystal display to achieve the lowest transmittance, and maintaining the highest transmittance at and other positions to achieve the suppression of strong light spots. The method has the advantages of being light and accurate, and having more complete effective imaging area of the sky.

Description

technical field [0001] The invention belongs to the field of meteorological observation, and in particular relates to a method for realizing sky imaging suppression of strong light spots, which can be applied to various sky imaging systems. Background technique [0002] The sky imager can automatically image the sky during the day to observe the amount and shape of clouds in the sky. However, when the sun enters the field of view, strong light spots often cause the imaging sensor to produce highlight bloom, and may even directly damage the imaging sensor. Moreover, when the highlights are blown, the image formed by the sky will have a large area of ​​highlight blown areas, which will lead to inaccurate calculation of cloud amount and cloud shape. [0003] There are special-purpose sky imagers designed to observe the sky for meteors or airglow. The imaging sensors of these instruments have very high gain and are very sensitive. If a full moon enters the field of view, brig...

Claims

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Application Information

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IPC IPC(8): G01W1/00G01C11/02G09G3/36
Inventor 张云鹏易帆柳付超
Owner WUHAN UNIV