Method and device for controlling output light of illuminating device and illuminating system

Abstract

The invention discloses a method and a device for controlling output light of an illuminating device and an illuminating system. The method comprises obtaining a primary image formed after a target object is illuminated by primary lamplight, and conducting color processing on the primary image to obtain a processed target image; respectively extracting first color coordinates of characteristic colors of the primary image and second color coordinates of characteristic colors of the target image; conducting light source estimation and calculation on the first color coordinates, the second color coordinates and third color coordinates to obtain fourth color coordinates; conducting drive circuit calculation according to the fourth color coordinates and a propor color coordinates to obtain drive current parameters; and taking the drive current parameters as light adjustment drive signals, and adjusting the output light of the illuminating device into target lamplight through the light adjustment drive signals. Through the method and the device for controlling the output light of the illuminating device and the illuminating system, output of the illuminating device is controlled by lamplight colors, the target lamplight is accurately controlled, and therefore color of an object to be illuminated is enhanced in a quantitative mode.

Description

technical field [0001] The invention relates to the field of lighting control, in particular to a method and device for controlling the output light of a lighting device, and a lighting system. Background technique [0002] In the prior art, the functions of analyzing and extracting scene features are usually implemented by cameras using various image feature extraction methods. However, the dimming method in the prior art is too simple, and generally can only qualitatively adjust the color of the light to a certain color, and cannot guarantee accurate and quantitative realization of a certain toning effect. There are following three solutions to solve the above problems in the prior art: [0003] (1) Average the gray levels of all pixels in the photo, and then use this average value as a measurement signal and use it for illumination feedback control; take the images of the R, G, and B channels of the camera, and extract the images of each channel respectively. The gray l...

AI Technical Summary

Problems solved by technology

[0009] In view of the related technology, when dimming and controlling the lighting device, only the color of the illuminated object in the photo captured by the imaging device is used as the color of the light to control the output light of the lighting device, and the target light cannot be accurately controlled and quantitatively enhanced. The problem of the color of the object to be illuminated has not yet proposed an effective solution. Therefore, the main purpose of the present invention is to provide a method and device for controlling the output light of the lighting device, and a lighting system to solve the above problems.

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