CN106885217A - The full-automatic white balance adjusting methods of RGB of LED - Google Patents
The full-automatic white balance adjusting methods of RGB of LED Download PDFInfo
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- CN106885217A CN106885217A CN201510943803.5A CN201510943803A CN106885217A CN 106885217 A CN106885217 A CN 106885217A CN 201510943803 A CN201510943803 A CN 201510943803A CN 106885217 A CN106885217 A CN 106885217A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S10/00—Lighting devices or systems producing a varying lighting effect
- F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
- F21S10/023—Lighting devices or systems producing a varying lighting effect changing colors by selectively switching fixed light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Processing Of Color Television Signals (AREA)
Abstract
The invention discloses the full-automatic white balance adjusting methods of RGB of kind of LED, it is comprised the following steps：The first step, is taken pictures using color camera to the LED on product, and by the image transmitting of LED true colors on reactor product to computer；Second step, analyzes the color-ratio numerical value and the numerical value of brightness of RGB in regional in the image of above-mentioned acquisition；3rd step, above-mentioned numerical value is matched for following canonical function, I=0.299R+0.587G+0.114B, and the numerical value of correspondence R, G, B in R, G, B the difference correspondence image wherein in function, I represents brightness；4th step, if correspondence numerical value is matched with canonical function in above-mentioned image, then it represents that the white balance of the LED is up to standard, otherwise is accomplished by adjusting the color data of LED, above-mentioned steps is re-started after adjustment again, until correspondence numerical value is matched with canonical function in image.The present invention can not only improve the handling of regulation, and can reduce error, improve efficiency, lift the quality of product.
Description
Technical field：
The present invention relates to LED characterization processes technical fields, a kind of full-automatic white balance adjusting methods of RGB of LED are refered in particular to.
Background technology：
Increasing product increased LED now, make its product appearance seem more extremely to dazzle, especially some high-end peripheral game equipment, such as notebook backlight keyboard, mechanical keyboard, mouse, earphone etc., all with the function that can at any time change color with user's regard.Such as Lei She companies are the mouse that space craft 2 is specially released, keyboard, earphone three-piece, product colour can be tuned into by red, green, blue by basic RGB tri coloured lanterns, it is yellow, purple, it is blue or green, shades of colour is waited in vain, for these products, color is a big attraction, how to ensure that the product colour produced meets the requirements and is particularly important, so needing to be adjusted the white balance of product.
So-called white balance is an index as white accuracy after the mixing generation of RGB in display (red, green, blue) three primary colours.White balance be show, image, the very important concept in one, field such as illumination, a series of problems that color rendition and tone are processed can be solved by it.Also there are the modes such as manual white balance and AWB in present many equipment (such as DV).If the not no number of being adjusted to of white balance, color will occurs inaccurate in follow-up color change.For example using DV shoot when, the image shot in the room of fluorescent lamp can seem greening, shooting the scenery for coming under tungsten light indoors will be partially yellow, and then partially blue in the photo that daylight shaded side is photographed, and its reason is that the setting of white balance is inaccurate.
In in order to ensure the product of production, LED color meets the requirements, and reaches accurate color, is generally also required to carry out white balance adjusting to LED.Make the white balance of LED meet the requirements, so in follow-up color adjustment, can just show accurate color.And at present to the white balance adjusting of LED product, carried out using manual type more, it is adjusted by naked eyes or by some simple optical instruments.The mode error of this regulation is very big, causes the color change of LED in final product inaccurate, larger difference occurs with a batch of product.
The content of the invention：
The technical problems to be solved by the invention are that and overcome the shortcomings of existing regulative mode, there is provided a kind of full-automatic white balance adjusting methods of the RGB of LED.
In order to solve the above-mentioned technical problem, present invention employs following technical proposals：The full-automatic white balance adjusting methods of RGB of the LED, it is characterised in that the adjusting method is comprised the following steps：The first step, is taken pictures using color camera to the LED on product, and by the image transmitting of LED true colors on reactor product to computer；Second step, analyzes the color-ratio numerical value and the numerical value of brightness of RGB in regional in the image of above-mentioned acquisition；3rd step, above-mentioned numerical value is matched for following canonical function, I=0.299R+0.587G+0.114B, and the numerical value of correspondence R, G, B in R, G, B the difference correspondence image wherein in function, I represents brightness；4th step, if correspondence numerical value is matched with canonical function in above-mentioned image, then it represents that the white balance of the LED is up to standard, otherwise is accomplished by adjusting the color data of LED, above-mentioned steps is re-started after adjustment again, until correspondence numerical value is matched with canonical function in image.
Furthermore, in above-mentioned technical proposal, in the described first step, during shooting, product will be placed in integrating sphere and be shot.
Furthermore, in above-mentioned technical proposal, in the 4th described step, when correspondence numerical value is mismatched with canonical function in image, correspondence numerical value is still matched with canonical function in image after adjusting again, and after adjusting the color data limit of LED, cannot still realize being matched with canonical function, then the LED is defective products.
Furthermore, in above-mentioned technical proposal, described product is any one in keyboard, mouse, earphone.
After adopting the above technical scheme, the present invention shoots by color digital camera to product, the image of the true colors of LED on product is obtained.Then RGB numerical value in the image is brought into the verification luminance function that the present invention is specified, the RGB numerical value to product LED is verified, and confirms whether it matches with the luminance function.If it does, then explanation LED is qualified, the color of LED is otherwise just adjusted, for example, rated current, the voltage of the LED of RGB correspondence light are adjusted, to adjust the intensity of its light, so as to adjust the RGB numerical value of whole LED.Finally verified again.If after adjusting the color data limit of LED, cannot still realize being matched with canonical function, then the LED is defective products.
Adjusting method of the present invention, directly can be realized being automatically brought into operation by computer, and the image of shooting is directly input into computer, and transfer corresponding luminance function in computer data wire or by way of being wirelessly transferred, and be matched.The signal of simulation is converted directly into digital information and compared by whole operation without artificial naked eyes judgement, so can not only improve the handling of regulation, and can be reduced error, be improved efficiency, lifts the quality of product.
Brief description of the drawings：
Fig. 1 is flow chart of the invention；
Specific embodiment：
The present invention is a kind of full-automatic white balance adjusting methods of RGB of LED.The adjusting method is comprised the following steps：
The first step, is taken pictures using color camera to the LED on product, and by the image transmitting of LED true colors on reactor product to computer；
Second step, analyzes the color-ratio numerical value and the numerical value of brightness of RGB in regional in the image of above-mentioned acquisition；
3rd step, above-mentioned numerical value is matched for following canonical function, I=0.299R+0.587G+0.114B, and the numerical value of correspondence R, G, B in R, G, B the difference correspondence image wherein in function, I represents brightness；4th step, if correspondence numerical value is matched with canonical function in above-mentioned image, then it represents that the white balance of the LED is up to standard, otherwise is accomplished by adjusting the color data of LED, above-mentioned steps is re-started after adjustment again, until correspondence numerical value is matched with canonical function in image.
With reference to Fig. 1, regulative mode of the invention is specifically described.
First, detected product is put into integrating sphere, and it is connected with computer by USB data line, one obtains the data message of shooting image, and (such as electric current, voltage) can be adjusted to the relevant parameter of the LED of detected product.
Why the present invention uses integrating sphere as the equipment of regulation, because when product after in integrating sphere, door being shut as darkroom is formed, having prevented influence of the exterior lighting light source to product, ball inwall is irregular scattering face.The light that LED sends by, even into camera, ensureing the uniformity and authenticity of the color of image and brightness for receiving as far as possible after scattering.
Secondly, by the image information of LED true colors on computer direct access reactor product, and the RGB numerical value in the image in designated area is analyzed.When the information such as the color of image are obtained by computer, can be directly obtained using some related softwares first having.For example：IMAQ IntegerTo Color Value (the graphical analysis and treatment control) program run under the LabVIEW programming development environments of National Instruments' exploitation.LabVIEW be one kind similar to C and BASIC development environments, use graphical author language, the program of generation is the form of block diagram.IMAQ is the treatment software that image is analyzed and is processed, and can process, analyze color data of image etc..By these softwares, computer can directly calculate captured image color information, and be quantized.Obtain the numerical value of RGB in the image designated area.
Then, the color-ratio numerical value of RGB in regional in the image of above-mentioned acquisition and the numerical value of brightness are carried out matching with canonical function
Finally, if it does, or result in error range, then it represents that qualified (PASS), product is taken out from integrating sphere.Otherwise it is accomplished by adjusting the color data of LED, re-starts above-mentioned steps after adjustment again, until correspondence numerical value is matched with canonical function in image.If after adjusting the color data limit of LED, cannot still realize being matched with canonical function, then the LED is defective products (FAIL).Bad products are taken out from integrating sphere.
Adjusting method of the present invention, directly can be realized being automatically brought into operation by computer, and the image of shooting is directly input into computer, and transfer corresponding luminance function in computer data wire or by way of being wirelessly transferred, and be matched.The signal of simulation is converted directly into digital information and compared by whole operation without artificial naked eyes judgement, so can not only improve the handling of regulation, and can be reduced error, be improved efficiency, lifts the quality of product.
Certainly, specific embodiment of the invention is the foregoing is only, not the scope of the present invention is limited, all equivalent change or modifications done according to construction, feature and principle described in scope of the present invention patent all should be included in scope of the present invention patent.
Claims (4)
1. a kind of full-automatic white balance adjusting methods of RGB of LED, it is characterised in that the adjusting method
Comprise the following steps：
The first step, is taken pictures using color camera to the LED on product, and LED on reactor product is true
The image transmitting of solid color is to computer；
Second step, the color-ratio numerical value of RGB and brightness in regional in the image of the above-mentioned acquisition of analysis
Numerical value；
3rd step, above-mentioned numerical value is matched for following canonical function,
In R, G, B difference correspondence image in I=0.299R+0.587G+0.114B, wherein function
The numerical value of correspondence R, G, B, I represents brightness；
4th step, if correspondence numerical value is matched with canonical function in above-mentioned image, then it represents that put down the white of the LED
Weighing apparatus is up to standard, otherwise is accomplished by adjusting the color data of LED, re-starts above-mentioned steps after adjustment again, directly
Correspondence numerical value is matched with canonical function into image.
2. full-automatic white balance adjusting methods of the RGB of the LED according to claim 1, it is special
Levy and be：In the described first step, during shooting, product will be placed in integrating sphere and shot.
3. full-automatic white balance adjusting methods of the RGB of the LED according to claim 1, it is special
Levy and be：In the 4th described step, when correspondence numerical value is mismatched with canonical function in image, scheme after adjusting again
Correspondence numerical value is still matched with canonical function as in, and after adjusting the color data limit of LED, still cannot be real
Now matched with canonical function, then the LED is defective products.
4. full-automatic white balance adjusting methods of the RGB of the LED according to claim 1, it is special
Levy and be：Described product is any one in keyboard, mouse, earphone.
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| CN201510943803.5A CN106885217A (en) | 2015-12-16 | 2015-12-16 | The full-automatic white balance adjusting methods of RGB of LED |
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| CN201510943803.5A CN106885217A (en) | 2015-12-16 | 2015-12-16 | The full-automatic white balance adjusting methods of RGB of LED |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560829A (en) * | 2017-07-14 | 2018-01-09 | 伟创力电子技术(苏州)有限公司 | A kind of method of testing of three primary colours automatic decision LED color |
| TWI655412B (en) * | 2017-12-25 | 2019-04-01 | 群光電子股份有限公司 | Light source detection system and method |
| TWI695969B (en) * | 2017-12-25 | 2020-06-11 | 群光電子股份有限公司 | Inspecting system and method for light emitting source |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000112030A (en) * | 1998-10-08 | 2000-04-21 | Minolta Co Ltd | Projection type picture display device |
| CN104796683A (en) * | 2014-01-22 | 2015-07-22 | 中兴通讯股份有限公司 | Image color calibration method and system |
-
2015
- 2015-12-16 CN CN201510943803.5A patent/CN106885217A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000112030A (en) * | 1998-10-08 | 2000-04-21 | Minolta Co Ltd | Projection type picture display device |
| CN104796683A (en) * | 2014-01-22 | 2015-07-22 | 中兴通讯股份有限公司 | Image color calibration method and system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107560829A (en) * | 2017-07-14 | 2018-01-09 | 伟创力电子技术(苏州)有限公司 | A kind of method of testing of three primary colours automatic decision LED color |
| TWI655412B (en) * | 2017-12-25 | 2019-04-01 | 群光電子股份有限公司 | Light source detection system and method |
| TWI695969B (en) * | 2017-12-25 | 2020-06-11 | 群光電子股份有限公司 | Inspecting system and method for light emitting source |
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Application publication date: 20170623 |