Brightness adjusting method and system, storage medium, lamp and lighting system

A technology for adjusting brightness and current brightness, applied to electrical components, etc., can solve problems such as poor curve effects, and achieve the effect of saving memory

Active Publication Date: 2021-11-30
GUANGZHOU HAOYANG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the Gamma curve is in the form of a power function, if the transformation is performed directly by changing the index of the original Gamma curve, the entire Gamma curve will also change, especially f

Method used

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  • Brightness adjusting method and system, storage medium, lamp and lighting system
  • Brightness adjusting method and system, storage medium, lamp and lighting system
  • Brightness adjusting method and system, storage medium, lamp and lighting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] This embodiment provides a method for adjusting brightness, including the following steps:

[0063] Correct the original Gamma curve based on m correction factors to obtain the corrected Gamma curve;

[0064] performing Gamma correction on the light source based on the correction Gamma curve;

[0065] The corrected Gamma curve is:

[0066] ;

[0067] Among them, G(x) is the corrected Gamma curve, x=n / N, n is the current brightness level set by the user, N is the maximum brightness level of the light source, γ is a constant greater than 1, f 1 (x), f 2 (x), f m (x) are three correction factors among the m correction factors, m≥1 and m is a positive integer;

[0068] The general functional formula of the correction factor is:

[0069] ;

[0070] Among them, f(x) is the universal functional formula of the correction factor, c is a constant not equal to 0, a is the parameter of the scope of action, 0

Embodiment 2

[0114] Based on the brightness adjustment method of Embodiment 1, the brightness change of the light source at low brightness can be softened, that is, the brightness change rate of the low brightness area can be reduced, and the problem of the brightness of the light source suddenly turning on or off in the low brightness area can be solved, and the brightness change of the light source can be softened. , making the human eye more comfortable.

[0115] Specifically, the correction factor f 3 (x) can be:

[0116] ;

[0117] At this point, the corrected Gamma curve is:

[0118] ;

[0119] The original Gamma value γ can take 2.2, then:

[0120] ;

[0121] Such as image 3 shown, based on the correction factor f 3 (x) The corrected Gamma curve obtained after correction. When the function image is in the low-brightness area, the slope is gentler than the original Gamma curve, and the brightness change rate is lower. Based on the corrected Gamma curve, the light source...

Embodiment 3

[0123] Based on the brightness adjustment method of Embodiment 1, the contrast of the light source can be enhanced, that is, the brightness of the light source can be reduced when the light source is in a low-brightness area, and at the same time, the brightness of the light source can be increased when the light source is in a high-brightness area, thereby enhancing the light-dark contrast effect.

[0124] From Example 2 and image 3 It can be known that in the low brightness area, through the correction factor f 3 (x) The corrected Gamma curve obtained after correction is below the original Gamma curve, which can achieve the effect of reducing the brightness of the low-brightness area of ​​the light source. Therefore, it is only necessary to superimpose a correction factor f that can enhance the brightness of the high-brightness area 4 (x) can be.

[0125] Specifically, the correction factor f 4 (x) can be:

[0126] ;

[0127] At this point, the corrected Gamma curve i...

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Abstract

The invention relates to the field of lighting dimming, in particular to a brightness adjusting method and system, a storage medium, a lamp and a lighting system. The method comprises the following steps: correcting an original Gamma curve based on m correction factors to obtain a corrected Gamma curve; and performing Gamma correction on a light source based on the corrected Gamma curve. According to the invention, the original Gamma curve is corrected based on the correction factor with the smooth curve, so that accurate correction and smooth compensation are achieved, and light sensed by human eyes during dimming of the light source subjected to Gamma correction can be linearly changed.

Description

technical field [0001] The present invention relates to the field of lighting dimming, and more specifically, to a brightness adjusting method, system, storage medium, lamp, and lighting system. Background technique [0002] The human eye's perception of brightness and physical power is not a simple linear relationship, but a relationship of a power function. The exponent of the power function is usually 2.2, which is called the Gamma value, that is, the power function is usually y=x 2.2 (where 0≤x≤1). The process of adjusting the physical brightness change of the light source to conform to the human eye's perception of brightness change is called Gamma correction, and the function image used for Gamma correction is the Gamma curve. [0003] The gamma correction of the light source in the prior art is based on a linear light source (that is, a light source with a linear relationship between current and brightness), but since the entire brightness range of a semiconductor LE...

Claims

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Application Information

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IPC IPC(8): H05B45/10H05B45/325
CPCH05B45/10H05B45/325
Inventor 蒋伟楷其他发明人请求不公开姓名
Owner GUANGZHOU HAOYANG ELECTRONICS CO LTD
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