CN114286476A - On-site light RGB parameter adjusting method - Google Patents
On-site light RGB parameter adjusting method Download PDFInfo
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- CN114286476A CN114286476A CN202011033822.1A CN202011033822A CN114286476A CN 114286476 A CN114286476 A CN 114286476A CN 202011033822 A CN202011033822 A CN 202011033822A CN 114286476 A CN114286476 A CN 114286476A
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Abstract
The invention relates to the technical field of color detection, in particular to a method for adjusting RGB (red, green and blue) parameters of field light, which comprises the following steps: step S1: turning on spot light; step S2: exposing the SMPTE standard color bar color plate in field light; step S3: acquiring a video or an image of an SMPTE standard color bar color plate exposed in field light; step S4: acquiring information in a video or image and displaying the information on color coordinates; step S5: selecting a pixel point, and measuring the actual YCbCr value of the selected pixel point; step S6: determining a standard YCbCr value of the selected pixel point corresponding to the SMPTE standard color bar plate; step S7: comparing the actual YCbCr value with the standard YCbCr value and calculating an offset value; step S8: and adjusting the spot light according to the offset value. According to the method for adjusting the RGB parameters of the field light, the parameters of the light emitted by the field light are adjusted through the offset values, and the shot image or video effect is more vivid.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of color detection, in particular to a method for adjusting RGB (red, green and blue) parameters of field light.
[ background of the invention ]
Most of color monitoring schemes on the market can analyze whether colors acquired by a current image are real colors of objects, but generally the acquired colors are not the real colors due to external light factors, and the current color monitoring schemes do not provide an adjustment scheme of light emitted by external light.
Therefore, the prior art is not sufficient and needs to be improved.
[ summary of the invention ]
In order to overcome the technical problem, the invention provides a method for adjusting RGB parameters of field light.
The invention provides a method for adjusting RGB parameters of field light, which comprises the following steps:
step S1: turning on spot light;
step S2: exposing the SMPTE standard color bar color plate in field light;
step S3: acquiring a video or an image of an SMPTE standard color bar color plate exposed in field light;
step S4: acquiring information in a video or image and displaying the information on color coordinates;
step S5: selecting a pixel point, and measuring the actual YCbCr value of the selected pixel point;
step S6: determining a standard YCbCr value of the selected pixel point corresponding to the SMPTE standard color bar plate;
step S7: comparing the actual YCbCr value with the standard YCbCr value and calculating an offset value;
step S8: and adjusting the RGB parameters of the field light according to the offset value.
Preferably, at least one pixel is selected from the pixel points.
Compared with the prior art, the method for adjusting the RGB parameters of the field light has the following advantages:
by the method for adjusting the RGB parameters of the field light, when the color collected by the camera is not the real color of an object, the parameters of the light emitted by the field light can be adjusted through the deviation value, so that the shot image or video is close to a specific actual situation, the effect is more vivid, the authenticity of the shot content is increased, and the viewing experience of a viewer is increased.
[ description of the drawings ]
Fig. 1 is a schematic view of a specific flow structure of the method for adjusting RGB parameters of field lighting according to the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the present invention provides a method for adjusting RGB parameters of field lighting, which adjusts the field lighting based on a standard SMPTE standard color stripe color plate to make the color of the content shot by a camera more fit to the real color of an object, so as to increase the viewing experience of a viewer, including the following steps:
step S1: and turning on the spot light.
The invention mainly makes the color of the shot content fit with the real color of the object by adjusting the field light, and particularly makes the compensation by adjusting the RGB parameter values of the field light, for example, the red color channel in the color of the shot content is smaller than the red color channel in the real color of the object, and the R value in the RGB parameter values of the field light can be increased.
Step S2: the SMPTE standard color bar plate is exposed to field light.
The YCbCr value of the SMPTE standard color bar color plate is a standard value, the value of the SMPTE standard color bar color plate after being shot as an image is compared with the standard value and calculated, and the method has higher accuracy degree compared with other objects or confirmed by depending on the visual angle feeling of workers, and provides scientific adjusting basis.
Step S3: video or images of SMPTE standard color stripe panels exposed to field lighting are acquired.
In the invention, the video or the image of the SMPTE standard color bar color plate in the field light is acquired by the camera, including but not limited to the video or the image, and the video or the image can also be shot by a device with a camera shooting function, such as a mobile phone. However, since different camera devices have different camera effects, after shooting and adjusting the field lighting through one camera device, the subsequent shooting effect can be ensured only by using the camera device.
Step S4: information in the video or image is captured and displayed on color coordinates.
The information in the acquired video or image can be displayed on the color coordinates through a monitor, or can be specifically selected according to the actual situation through an industrial computer.
Step S5: and selecting a pixel point, and measuring the actual YCbCr value of the selected pixel point.
According to the invention, one pixel point is selected, which is beneficial to reducing the calculation complexity, determining the adjusting scheme conveniently and quickly and ensuring the light adjusting speed. The actual YCbCr value is calculated by a monitor after the selected pixel point is shot by the camera.
Including but not limited to this, also can choose to choose two or more pixel, can reduce the chance of the testing result and the probability that the error appears.
Step S6: and determining the standard YCbCr value of the selected pixel point corresponding to the SMPTE standard color bar color plate.
In the present invention, the standard YCbCr value is determined according to the rec.709 color standard, which includes but is not limited to BT2020 color gamut standard, DCI-P3 color gamut standard or HDR color standard, and may be selected in practice.
Step S7: comparing the actual YCbCr value with the standard YCbCr value and calculating an offset value;
step S8: and adjusting the spot light according to the offset value.
Specifically, when the actual YCbCr value of a pixel is Y ═ 200, Cb ═ 240, and Cr ═ 190, the standard YCbCr value of the pixel corresponding to the SMPTE standard color palette is Y ═ 200, Cb ═ 240, and Cr ═ 230, that is, the Cr value of the actual YCbCr is smaller than the Cr value of the standard YCbCr, the offset value of the pixel can be determined.
By combining that the Cr value of the actual YCbCr is smaller than that of the standard YCbCr, and the specific offset value is Cr 40, the difference between R and G in the video or image shot by the camera compared with R and G of the SMPTE standard color stripe plate can be determined, and the color of the shot video or image is more fit with the real color of the object by increasing the R value of the spot light and reducing the G value.
When the field light is adjusted, the color coordinate graph of the SMPTE standard color bar color plate and the actually measured color coordinate graph can be displayed, so that the worker can conveniently adjust the R value, the G value and the B value sent by the field light according to the deviation to be larger or smaller, and the real color of an object can be more conveniently attached. It can be understood that the color of the SMPTE standard color bar palette and the actually measured image can also be displayed by the vector oscilloscope and easily adjusted by the user.
Compared with the prior art, the method for adjusting the RGB parameters of the field light has the following advantages:
by the method for adjusting the RGB parameters of the field light, when the color collected by the camera is not the real color of an object, the parameters of the light emitted by the field light can be adjusted through the deviation value, so that the shot image or video is close to a specific actual situation, the effect is more vivid, the authenticity of the shot content is increased, and the viewing experience of a viewer is increased.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and any modifications, equivalents, improvements, etc. made within the spirit of the present invention should be included in the scope of the present invention.
Claims (2)
1. A field light RGB parameter adjusting method is characterized in that: the method for adjusting the RBG parameters of the field light comprises the following steps:
step S1: turning on spot light;
step S2: exposing the SMPTE standard color bar color plate in field light;
step S3: acquiring a video or an image of an SMPTE standard color bar color plate exposed in field light;
step S4: acquiring information in a video or image and displaying the information on color coordinates;
step S5: selecting a pixel point, and measuring the actual YCbCr value of the selected pixel point;
step S6: determining a standard YCbCr value of the selected pixel point corresponding to the SMPTE standard color bar plate;
step S7: comparing the actual YCbCr value with the standard YCbCr value and calculating an offset value;
step S8: and adjusting the spot light according to the offset value.
2. The on-site light RGB parameter adjustment method of claim 1, characterized in that: and selecting at least one pixel point.
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