Ambient illumination simulation method based on multi-primary-color spectrum superposition process

Abstract

The invention discloses an ambient illumination simulation method based on a multi-primary-color spectrum superposition process, and the method comprises the steps: step 1, obtaining target parameters, and obtaining the parameters of a to-be-simulated target environment; step 2, screening out a plurality of single-channel fitting wavelets combined into a plurality of target parameters according to the target parameters, wherein the screening comprises solving by adopting a formula; and step 3, determining a primary color light source corresponding to each single-channel fitting wavelet and a driving parameter thereof based on the screened single-channel fitting wavelets. Through the method, the spectral distribution of the ambient light source can be accurately simulated.

Description

technical field [0001] This patent belongs to the technical field of image processing, and specifically relates to a simulation method based on multi-primary color spectral superposition process. Background technique [0002] LED light sources are widely used in all walks of life because of their advantages of environmental protection, energy saving, long service life, rich colors, etc., or as signal indicators or as lighting sources. In terms of household lighting, with the emergence of new words such as big health, smart furniture, and healthy lighting, people have new requirements for household lighting, such as requiring adjustable color temperature and brightness, and even intelligent control. In terms of commercial lighting, brand clothing stores, jewelry stores, mobile phone and other consumer electronics display flagship stores in large shopping malls also have higher and higher requirements for ambient lighting that can faithfully reproduce colors, such as lighting ...

AI Technical Summary

Problems solved by technology

Four-primary color mixing means that the primary color involved in the mixing is composed of 4 LED lights, such as RGB+white (warm white or cool white). Compared with the two primary colors, the color rendering index of the four-primary color mixing is improved, and the matching accuracy of the color coordinates It has been greatly improved, and the color temperature can be adjusted in a wide range. Since the solution of the four primary color coefficients is not unique when matching the same color temperature, the spectrum is not fixed or the spectral distribution range is not ideal.

[0005] According to the calculation theory of chromaticity, the color temperature of the mixed color light of two primary colors can only be between the color temperatures of the two primary colors. When matching the same color temperature, the number of primary colors used remains unchanged, and the solution is unique, but sometimes it deviates far from the black body locus, and the color difference is greater than 0.005, does not meet the requirements of the national standard for color coordinate accuracy, low color rendering index, suitable for ordinary household lighting

[0006] Compared with two primary colors, the color rendering index of the four primary colors can be improved, the matching accuracy of the color coordinates is also greatly improved, and the color temperature adjustment range is wide. When matching the black body color coordinates, if the cyclic correction algorithm is configured, the color coordinates can be separated from the black body locus Very close, the visual glazing color is better, and most of the cases can meet the requirements of national standard accuracy, but when matching the same color temperature or color coordinates, there may be multiple sets of coefficients for the primary color involved in color mixing, the solution is not unique, and the spectrum is difficult to fix

And limited by the existing LED primary color spectrum, there are few algorithms or products that can achieve CIE standard light source spectral distribution matching with high precision

At present, the multi-channel LED color light mixing method can complete the matching of CIE standard light source, but the difference with the spectral curves of CIE A, CIE B, and CIE D series is still very obvious, and is limited by the number of optional LEDs and the spectral distribution characteristics of the base color , it is still impossible or very difficult to complete the simulation of the solar spectrum

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