A device and method for measuring sky brightness distribution

Abstract

The invention relates to a device for measuring sky brightness distribution, comprising a first camera for collecting a first sky panorama image; a second camera for collecting a second sky panorama image; a correction reference device for providing a first correction reference value and the second correction reference value; the image processing device is respectively connected with the first camera, the second camera and the correction reference device signal; the image processing device corrects the first sky panorama image with the first correction reference value to obtain the first correction image, and uses the first correction reference value The second correction reference value is used to correct the second sky panorama image to obtain a second correction image, and the first correction image and the second correction image are synthesized to obtain a sky brightness distribution image. The invention corrects the brightness value of the collected image, the corrected image can be interactively optimized, and the measured sky brightness distribution is more accurate. The invention also relates to a method for measuring sky brightness distribution.

Description

technical field [0001] The invention relates to the field of sky image measurement, in particular to a device and method for measuring sky brightness distribution. Background technique [0002] The distribution of sky brightness is an important factor affecting the natural lighting of buildings, and it is also the main basis for sky classification. Since the sky brightness and its distribution change at any time, it has always been an important research hotspot to quickly and accurately measure the brightness values ​​of various places in the sky. [0003] Photometry is an important way to study the brightness distribution of the sky. At present, the sky luminance distribution measurement device is to take pictures of the sky through a camera, and record the information of the luminance distribution of each point in the photo, so as to determine the luminance value of the entire sky. [0004] The sky luminance distribution measuring device of the prior art has the followin...

AI Technical Summary

Problems solved by technology

[0005] (1) The brightness value of the image obtained by taking pictures has not been corrected, resulting in inaccurate sky brightness obtained from this measurement;

[0006] (2) There is only one camera to take pictures, and the images obtained by taking pictures cannot be interactively optimized, resulting in inaccurately measured sky brightness

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