CN115798374B - System and method for carrying out on-site real-time color matching based on Box IO - Google Patents
System and method for carrying out on-site real-time color matching based on Box IO Download PDFInfo
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Abstract
The invention discloses a method for carrying out on-site real-time color matching based on Box IO, which comprises the following steps: based on a box IO color control box connected with the display equipment, measuring parameters corresponding to display indexes of images in the display equipment and chromaticity of a display screen after an image to be mixed is input, and obtaining corresponding parameter data; operating the corresponding parameter data in LUT operation software, and acquiring LUT data through operation; the box IO color control box is connected with the display equipment, the LUT data is adjusted based on the real-time toning software, new LUT data is generated after adjustment, the new LUT data is transmitted to the display equipment terminal, and the display equipment terminal displays pictures subjected to on-site real-time toning. Professional color correction is performed through the Box IO color control box, so that the on-site efficient real-time color mixing function is realized, and color transmission and color management of a shooting site are facilitated.
Description
Technical Field
The invention relates to the technical field of color management, in particular to a system and a method for carrying out on-site real-time color matching based on Box IO.
Background
At present, some high-end brands or high-end product lines can perform factory color management (only aiming at white balance) on display equipment, but the color management is gradually attenuated along with the influence of factors such as use time, use environment and the like, and the color correctness is influenced; factory accuracy is not enough and daily color management is also required;
along with the rapid development of the color matching related technology, the accuracy of color transfer becomes critical, and the signal acquisition and daily color management of digital equipment are more and more convenient and rapid, so that a field real-time color matching system is urgently required to be built for color accuracy and stability.
Disclosure of Invention
The invention provides a system and a method for carrying out on-site real-time color mixing based on Box IO, which are used for solving the problems that in the prior art, some high-end brands or high-end product lines can carry out factory color management (only aiming at white balance) on display equipment, but the color is gradually attenuated along with the influence of factors such as using time, using environment and the like, and the color correctness is influenced; factory accuracy is not enough and daily color management is also required; with the rapid development of the color matching related technology, the accuracy of color transfer becomes critical, and the signal acquisition and daily color management of digital equipment are more and more convenient and rapid, so that the above-mentioned problems of a field real-time color matching system are urgently needed to be built for color accuracy and stability.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the method for carrying out on-site real-time color mixing based on Box IO is characterized by comprising the following steps:
s101: based on the Box IO color control box, after an image to be mixed is input, measuring parameters corresponding to display indexes of the image in the display equipment and chromaticity of a display screen to obtain corresponding parameter data;
s102: operating the corresponding parameter data in LUT operation software, and acquiring LUT data through operation;
s103: and adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to a display equipment terminal, and displaying the picture subjected to field real-time toning by the display equipment terminal.
Wherein, the step S101 includes:
s1011: based on the Box IO, measuring the display index in the display index operation system software of the current Box IO to obtain display index data, wherein the display index data comprises: color temperature, brightness, and gamma;
s1012: measuring display parameters of a chromaticity standard color block of a display screen based on a colorimeter, and acquiring display parameter data;
s1013: and preprocessing the display index data and the display parameter data to obtain a target measurement data set.
Wherein, the step S102 includes:
s1021: processing the target measurement data set in LUT operation software by utilizing a matrix algorithm according to the international display standard to obtain a conversion matrix corresponding to brightness and chromaticity;
s1022: and constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in an LUT storage library.
Wherein, the step S103 includes:
s1031: editing the LUT file by using LUT running software to obtain controllable chromatic aberration;
s1032: in the controllable color difference range, carrying out on-site real-time color mixing processing on original color data transmitted by a video signal receiver through real-time color mixing software;
s1033: in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
Wherein, the step S1032 includes:
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
A system for performing live real-time toning based on BoxIO comprising:
the measurement data acquisition unit is used for measuring parameters corresponding to the display index of the image and the chromaticity of the display screen in the display device after the image to be mixed is input based on the box IO color control box, and acquiring corresponding parameter data;
the LUT operation software unit is used for operating the corresponding parameter data in the LUT operation software, and obtaining LUT data through operation;
the real-time toning software unit is used for adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to the display equipment terminal, and displaying the picture subjected to the on-site real-time toning by the display equipment terminal.
Wherein the measurement data acquisition unit includes:
the measurement data obtaining first subunit is configured to measure, based on the BoxIO, a display index in display index operation system software of the current BoxIO, and obtain display index data, where the display index data includes: color temperature, brightness, and gamma;
the second subunit is used for measuring the display parameters of the chromaticity standard color block of the display screen based on the colorimeter to obtain display parameter data;
and the measurement data acquisition third subunit is used for preprocessing the display index data and the display parameter data to acquire a target measurement data set.
Wherein the LUT execution software unit includes:
the LUT operation software first subunit is used for following the international display standard, and processing the target measurement data set by using a matrix algorithm in the LUT operation software to obtain a conversion matrix corresponding to brightness and chromaticity;
the LUT operation software second subunit is used for constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in the LUT storage library.
Wherein the real-time toning software unit comprises:
the real-time toning software first subunit is used for editing the LUT file by utilizing LUT running software to obtain controllable chromatic aberration;
the second subunit of the real-time toning software is used for carrying out on-site real-time toning processing on the original color data transmitted by the video signal receiver through the real-time toning software in the controllable color difference range;
the real-time toning software third subunit is used for analyzing the LUT file by the real-time toning software in the on-site real-time toning processing process, then retrieving the corresponding color in the LUT data, adjusting the color data in the original image based on the retrieved color, and displaying the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
Wherein the real-time toning software second subunit comprises: a color balance controller;
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
Compared with the prior art, the invention has the following advantages:
the method for carrying out on-site real-time color mixing based on Box IO comprises the following steps: based on the Box IO color control box, after an image to be mixed is input, measuring parameters corresponding to display indexes of the image in the display equipment and chromaticity of a display screen to obtain corresponding parameter data; operating the corresponding parameter data in LUT operation software, and acquiring LUT data through operation; and adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to a display equipment terminal, and displaying the picture subjected to field real-time toning by the display equipment terminal. Professional color correction is performed through the Box IO color control box, so that the on-site efficient real-time color mixing function is realized, and color transmission and color management of a shooting site are facilitated.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a flow chart of a method for performing on-site real-time toning based on Box IO in an embodiment of the invention;
FIG. 2 is a flow chart of measurement data in a method for performing live real-time toning based on Box IO in an embodiment of the present invention;
fig. 3 is a flow chart of LUT data acquisition in the method of performing live real-time toning based on BoxIO in an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The embodiment of the invention provides a system and a method for carrying out on-site real-time color matching based on Box IO, referring to FIGS. 1-3, the method for carrying out on-site real-time color matching based on box IO comprises the following steps:
s101: based on the Box IO color control box, after an image to be mixed is input, measuring parameters corresponding to display indexes of the image in the color control box and chromaticity of a display screen to obtain corresponding parameter data;
s102: operating the corresponding parameter data in LUT operation software, and acquiring LUT data through operation;
s103: and adjusting the LUT data based on the real-time toning software, generating new LUT data after the adjustment, connecting the box IO color control box with a display equipment terminal, transmitting the new LUT data to the display equipment terminal, and displaying the picture subjected to field real-time toning by the display equipment terminal.
The working principle of the technical scheme is as follows: the box IO color control box belongs to an advanced color management device, and is connected with a corresponding control program and a corresponding color management program through corresponding interfaces, wherein the corresponding interfaces comprise: the system comprises two groups of input and output interfaces, a looped 3G-SDI interface and a Mini-DP interface; the corresponding control program selects IP Remote Utilities control program, the monitoring of video real-time brightness and vector waveform is realized through the control program, the box IO color control box comprises a plurality of LUT storage areas, each LUT storage area can store 16 LUT files at most, and the LUT data obtained through operation can be checked through a display equipment terminal and the picture effect can be quickly previewed in the process of carrying out real-time color matching on the image;
the box IO color control box is matched with the real-time color matching software to realize the on-site efficient real-time color matching process, and professional color correction is carried out on the terminal through matching with the color management software, wherein the real-time color matching software comprises: QTake, scratch, liveGrade PRO, firePlay;
the display device comprises a display device, a box IO color control box, a display device and a control system, wherein the box IO color control box is connected with the display device, the box IO color control box supports 3D and 1DLUT, and the image control function of the box IO color control box can be used for correction, on-site color mixing and operation based on LUT; the box IO is equipped with an integrated test pattern generator, which can manually generate test sequences, or can automatically generate test patterns by using LightSpace or CalMAN correction software. 3D LUT correction can be performed easily and quickly only by matching the Box IO with the probe and the LightSpace or CalMAN software; frames grabbed in the BoxIO self-contained RAW format may be displayed by a frame call function that may be used in numerous practical scenarios, including looking at reference still frames in a film scene environment, displaying complex test patterns, and performing new style previews on previously grabbed content. The frame can be quickly loaded through the connected display equipment, and the frame can also be directly loaded from 16 memory slots of the box IO, so that faster frame calling is realized.
The beneficial effects of the technical scheme are as follows: based on a box IO color control box, after an image to be mixed is input, measuring display indexes of images in display equipment (the display equipment comprises a monitor, an LED large screen, a display, a television and the like) and parameters corresponding to chromaticity of the display screen to obtain corresponding parameter data; operating the corresponding parameter data in LUT operation software, and acquiring LUT data through operation; and adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to a display equipment terminal, and displaying the picture subjected to field real-time toning by the display equipment terminal. Professional color correction is performed through the Box IO color control box, so that the on-site efficient real-time color mixing function is realized, and color transmission and color management of a shooting site are facilitated.
In another embodiment, the step S101 includes:
s1011: based on the Box IO, measuring the display index in the display index operation system software of the current Box IO to obtain display index data, wherein the display index data comprises: color temperature, brightness, and gamma;
s1012: measuring display parameters of a chromaticity standard color block of a display screen based on a colorimeter, and acquiring display parameter data;
s1013: and preprocessing the display index data and the display parameter data to obtain a target measurement data set.
The working principle of the technical scheme is as follows: based on the Box IO, measuring the display index in the display index operation system software of the current Box IO to obtain display index data, wherein the display index data comprises: color temperature, brightness and gamma, wherein the gamma value is adjusted by a program, and the gamma value of a liquid crystal control center is obtained by detection; measuring display parameters of a chromaticity standard color block of a display screen based on a colorimeter, and acquiring display parameter data; and preprocessing the display index data and the display parameter data to obtain a target measurement data set.
Abnormal data exist in the acquired display index data and the acquired display parameter data, wherein the abnormal data comprise loss, outliers, noise and deviation, the lost data are caused by the fact that in the data measurement process, a measuring instrument breaks down to cause the data to be lost, the recorded data are NULL or 0, and the measured data deviate from real load data. The measurement data is subjected to clustering algorithm and standardization processing, abnormal data are removed, final standardized data are obtained, the standardization processing is carried out on the standardized data, the influence of the measurement data on a clustering result due to overlarge magnitude difference is avoided, and the influence of the magnitude of the data quantity on clustering analysis can be eliminated.
The beneficial effects of the technical scheme are as follows: based on the Box IO, measuring the display index in the display index operation system software of the current Box IO to obtain display index data, wherein the display index data comprises: color temperature, brightness, and gamma; measuring display parameters of a chromaticity standard color block of a display screen based on a colorimeter, and acquiring display parameter data; and preprocessing the display index data and the display parameter data to obtain a target measurement data set. Corresponding data are obtained through measurement, and feasibility data are provided for realizing the on-site efficient real-time color matching function.
In another embodiment, the step S102 includes:
s1021: processing the target measurement data set in LUT operation software by utilizing a matrix algorithm according to the international display standard to obtain a conversion matrix corresponding to brightness and chromaticity;
s1022: and constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in an LUT storage library.
The working principle of the technical scheme is as follows: processing the target measurement data set in LUT operation software by utilizing a matrix algorithm according to the international display standard to obtain a conversion matrix corresponding to brightness and chromaticity; and constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, presetting a judgment condition after constructing the LUT file, presetting the LUT file, updating the LUT file and storing the LUT file in an LUT storage library if the preset judgment condition is met, and discarding the LUT file if the preset judgment condition is not met.
The preset judging and setting conditions are that a comparison result is obtained by extracting certain parameters in the LUT file and comparing the corresponding parameters with preset values, the data format, the data length and the data verification information of the LUT file are compared with the preset corresponding conditions, if the data format, the data length and the data verification information are matched with the preset corresponding conditions, the comparison result is in accordance with the preset conditions, and if the data format, the data length and the data verification information are not matched with the preset conditions, the comparison result is not in accordance with the preset conditions.
The beneficial effects of the technical scheme are as follows: processing the target measurement data set in LUT operation software by utilizing a matrix algorithm according to the international display standard to obtain a conversion matrix corresponding to brightness and chromaticity; and constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in an LUT storage library. Thereby providing a viable LUT file for thereby implementing a field efficient real-time toning function.
In another embodiment, the step S103 includes:
s1031: editing the LUT file by using LUT running software to obtain controllable chromatic aberration;
s1032: in the controllable color difference range, carrying out on-site real-time color mixing processing on original color data transmitted by a video signal receiver through real-time color mixing software;
s1033: in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
The working principle of the technical scheme is as follows: editing the LUT file by using LUT running software to obtain controllable chromatic aberration; in the controllable color difference range, carrying out on-site real-time color mixing processing on original color data transmitted by a video signal receiver through real-time color mixing software; in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
In the process of editing the LUT file by utilizing LUT operation software, calculating coordinate points corresponding to the original image transformation matrix through characteristic point matching pairs corresponding to the LUT data matrix in the LUT file, so as to acquire the mapping relation between the coordinate points in the LUT data matrix and the coordinate points corresponding to the original image transformation matrix; the LUT table is constructed by calculating the matrix suitable for all coordinate points in the original image, a two-dimensional matrix is constructed, the row number and the column number of the two-dimensional matrix are consistent with those of the panorama, and elements in the matrix are address information of the coordinate points; performing inverse transformation operation through the corresponding matrix to obtain the point of each point on the panoramic image corresponding to the original image; and finally, storing the address of the original point in the corresponding position of the two-dimensional matrix. Thereby constructing the mapping relation between the LUT file and the image to be processed.
The beneficial effects of the technical scheme are as follows: editing the LUT file by using LUT running software to obtain controllable chromatic aberration; in the controllable color difference range, carrying out on-site real-time color mixing processing on original color data transmitted by a video signal receiver through real-time color mixing software; in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result. Therefore, the on-site efficient real-time color mixing function is realized, and the color transmission and color management of the shooting site are facilitated.
In another embodiment, the step S1032 includes:
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
The working principle of the technical scheme is as follows: creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing; based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
The primary color matching is to perform contrast adjustment on an image to be processed, adjust the image from dark tone, bright tone to intermediate tone in a color controller, and correct color cast in the image to be processed by matching adjustment of color bars and color saturation bars in the color controller; the secondary color matching is to adjust the local color of the image to be processed through a curve editor and a shade controller which are positioned in the panel; the third-level toning is to carry out color contrast adjustment on the hue of the image to be processed and the hue of a preset target image; the fourth-level toning is to pre-browse after adding a color special effect to the background color of the image.
The beneficial effects of the technical scheme are as follows: creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing; based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form. Therefore, the on-site efficient real-time color mixing function is realized, and the color transmission and color management of the shooting site are facilitated.
In another embodiment, a system for in-situ real-time toning based on BoxIO, comprising:
the measurement data acquisition unit is used for measuring parameters corresponding to the display index of the image and the chromaticity of the display screen in the display device after the image to be mixed is input based on the box IO color control box, and acquiring corresponding parameter data;
the LUT operation software unit is used for operating the corresponding parameter data in the LUT operation software, and obtaining LUT data through operation;
the real-time toning software unit is used for adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to the display equipment terminal, and displaying the picture subjected to the on-site real-time toning by the display equipment terminal.
The working principle of the technical scheme is as follows: the box IO color control box belongs to advanced color management equipment, and is connected with corresponding control programs and color management programs through corresponding interfaces, wherein the corresponding interfaces comprise: the system comprises two groups of input and output interfaces, a looped 3G-SDI interface and a Mini-DP interface; the corresponding control program selects IP Remote Utilities control program, the monitoring of video real-time brightness and vector waveform is realized through the control program, the box IO color control box comprises a plurality of LUT storage areas, each LUT storage area can store 16 LUT files at most, LUT data obtained through operation can be checked through the box IO color control box, and the picture effect can be previewed rapidly in the process of carrying out real-time color mixing on the image;
the box IO color control box is matched with the real-time color matching software to realize the on-site efficient real-time color matching process, and professional color correction is carried out on the terminal through matching with the color management software, wherein the real-time color matching software comprises: QTake, scratch, liveGrade PRO, firePlay.
The beneficial effects of the technical scheme are as follows: the measurement data acquisition unit is used for measuring parameters corresponding to the display index of the image and the chromaticity of the display screen in the display device after the image to be mixed is input based on the box IO color control box, and acquiring corresponding parameter data; the LUT operation software unit is used for operating the corresponding parameter data in the LUT operation software, and obtaining LUT data through operation; the real-time toning software unit is used for adjusting the LUT data based on the real-time toning software, generating new LUT data after adjustment, transmitting the new LUT data to the display equipment terminal, and displaying the picture subjected to the on-site real-time toning by the display equipment terminal. Professional color correction is performed through the Box IO color control box, so that the on-site efficient real-time color mixing function is realized, and color transmission and color management of a shooting site are facilitated.
In another embodiment, the measurement data acquisition unit includes:
the measurement data obtaining first subunit is configured to measure, based on the BoxIO, a display index in display index operation system software of the current BoxIO, and obtain display index data, where the display index data includes: color temperature, brightness, and gamma;
the second subunit is used for measuring the display parameters of the chromaticity standard color block of the display screen based on the colorimeter to obtain display parameter data;
and the measurement data acquisition third subunit is used for preprocessing the display index data and the display parameter data to acquire a target measurement data set.
The working principle of the technical scheme is as follows: the measurement data obtaining first subunit is configured to measure, based on the BoxIO, a display index in display index operation system software of the current BoxIO, and obtain display index data, where the display index data includes: color temperature, brightness, and gamma; the second subunit is used for measuring the display parameters of the chromaticity standard color block of the display screen based on the colorimeter to obtain display parameter data; and the measurement data acquisition third subunit is used for preprocessing the display index data and the display parameter data to acquire a target measurement data set.
Abnormal data exist in the acquired display index data and the acquired display parameter data, wherein the abnormal data comprise loss, outliers, noise and deviation, the lost data are caused by the fact that in the data measurement process, a measuring instrument breaks down to cause the data to be lost, the recorded data are NULL or 0, and the measured data deviate from real load data. The measurement data is subjected to clustering algorithm and standardization processing, abnormal data are removed, final standardized data are obtained, the standardization processing is carried out on the standardized data, the influence of the measurement data on a clustering result due to overlarge magnitude difference is avoided, and the influence of the magnitude of the data quantity on clustering analysis can be eliminated.
The beneficial effects of the technical scheme are as follows: the measurement data obtaining first subunit is configured to measure, based on the BoxIO, a display index in display index operation system software of the current BoxIO, and obtain display index data, where the display index data includes: color temperature, brightness, and gamma; the second subunit is used for measuring the display parameters of the chromaticity standard color block of the display screen based on the colorimeter to obtain display parameter data; and the measurement data acquisition third subunit is used for preprocessing the display index data and the display parameter data to acquire a target measurement data set. Corresponding data are obtained through measurement, and feasibility data are provided for realizing the on-site efficient real-time color matching function.
In another embodiment, the LUT execution software unit includes:
the LUT operation software first subunit is used for following the international display standard, and processing the target measurement data set by using a matrix algorithm in the LUT operation software to obtain a conversion matrix corresponding to brightness and chromaticity;
the LUT operation software second subunit is used for constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in the LUT storage library.
The working principle of the technical scheme is as follows: the LUT operation software first subunit is used for following the international display standard, and processing the target measurement data set by using a matrix algorithm in the LUT operation software to obtain a conversion matrix corresponding to brightness and chromaticity; the LUT operation software second subunit is used for constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in the LUT storage library.
The preset judging and setting conditions are that a comparison result is obtained by extracting certain parameters in the LUT file and comparing the corresponding parameters with preset values, the data format, the data length and the data verification information of the LUT file are compared with the preset corresponding conditions, if the data format, the data length and the data verification information are matched with the preset corresponding conditions, the comparison result is in accordance with the preset conditions, and if the data format, the data length and the data verification information are not matched with the preset conditions, the comparison result is not in accordance with the preset conditions.
The beneficial effects of the technical scheme are as follows: processing the target measurement data set in LUT operation software by utilizing a matrix algorithm according to the international display standard to obtain a conversion matrix corresponding to brightness and chromaticity; and constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in an LUT storage library. Thereby providing a viable LUT file for thereby implementing a field efficient real-time toning function.
In another embodiment, the real-time toning software unit includes:
the real-time toning software first subunit is used for editing the LUT file by utilizing LUT running software to obtain controllable chromatic aberration;
the second subunit of the real-time toning software is used for carrying out on-site real-time toning processing on the original color data transmitted by the video signal receiver through the real-time toning software in the controllable color difference range;
the real-time toning software third subunit is used for analyzing the LUT file by the real-time toning software in the on-site real-time toning processing process, then retrieving the corresponding color in the LUT data, adjusting the color data in the original image based on the retrieved color, and displaying the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
The working principle of the technical scheme is as follows: the real-time toning software first subunit is used for editing the LUT file by utilizing LUT running software to obtain controllable chromatic aberration; the second subunit of the real-time toning software is used for carrying out on-site real-time toning processing on the original color data transmitted by the video signal receiver through the real-time toning software in the controllable color difference range; the real-time toning software third subunit is used for analyzing the LUT file by the real-time toning software in the on-site real-time toning processing process, then retrieving the corresponding color in the LUT data, adjusting the color data in the original image based on the retrieved color, and displaying the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
In the process of editing the LUT file by utilizing LUT operation software, calculating coordinate points corresponding to the original image transformation matrix through characteristic point matching pairs corresponding to the LUT data matrix in the LUT file, so as to acquire the mapping relation between the coordinate points in the LUT data matrix and the coordinate points corresponding to the original image transformation matrix; the LUT table is constructed by calculating the matrix suitable for all coordinate points in the original image, a two-dimensional matrix is constructed, the row number and the column number of the two-dimensional matrix are consistent with those of the panorama, and elements in the matrix are address information of the coordinate points; performing inverse transformation operation through the corresponding matrix to obtain the point of each point on the panoramic image corresponding to the original image; and finally, storing the address of the original point in the corresponding position of the two-dimensional matrix. Thereby constructing the mapping relation between the LUT file and the image to be processed.
For an image in an original color space, the minimum value and the maximum value of the original image in the color space of three color axes are required to be acquired, the value taking area of the image on each color axis is uniformly quantized and divided into a plurality of color subspaces at equal intervals, the uniform quantity is equally divided through quantization intervals, and a quantization interval formula is as follows:
wherein D is (i) Representing quantization interval values;represents the maximum value on the i color axis, i=0, 1 represents the color axes in the three color lookup tables, l, respectively i Representing the number of bits on each color axis after quantization, the division boundary on the divided color axis having +.>A plurality of; />Representing the minimum on the i color axis;
the coordinate points in each divided color interval are expressed by using the same quantized value, the quantized value adopts an interval midpoint mode, and the quantized color values on the coordinate points are calculated as follows:
wherein Q (f) (i) ) Representing the corresponding pixel value f of the original image (i) Is a quantized value of (2); f (f) (i) Representing pixel values corresponding to the original image;representing the minimum of the i color axis; d (D) (i) Representing quantization interval values;
establishing a corresponding color index table through quantized color values on coordinate points, and if the pixel value f corresponding to the original image is (i) Quantized value Q (f) (i) ) M is used for data storage of the quantized value, and the range of the index value is 0-2 l When the image color data is read, the color data is read,the index value m on the image pixel point is mapped back to Q (f) through the color index table (i) ) Thereby ensuring the accuracy of the color mixing.
The beneficial effects of the technical scheme are as follows: editing the LUT file by using LUT running software to obtain controllable chromatic aberration; in the controllable color difference range, carrying out on-site real-time color mixing processing on original color data transmitted by a video signal receiver through real-time color mixing software; in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result. Therefore, the on-site efficient real-time color mixing function is realized, and the color transmission and color management of the shooting site are facilitated.
In another embodiment, the real-time toning software second subunit includes: a color balance controller;
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
The working principle of the technical scheme is as follows: creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing; based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
The primary color matching is to perform contrast adjustment on an image to be processed, adjust the image from dark tone, bright tone to intermediate tone in a color controller, and correct color cast in the image to be processed by matching adjustment of color bars and color saturation bars in the color controller; the secondary color matching is to adjust the local color of the image to be processed through a curve editor and a shade controller which are positioned in the panel; the third-level toning is to carry out color contrast adjustment on the hue of the image to be processed and the hue of a preset target image; the fourth-level toning is to pre-browse after adding a color special effect to the background color of the image.
The beneficial effects of the technical scheme are as follows: creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing; based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form. Therefore, the on-site efficient real-time color mixing function is realized, and the color transmission and color management of the shooting site are facilitated.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (4)
1. The method for carrying out on-site real-time color mixing based on Box IO is characterized by comprising the following steps:
s101: based on the Box IO color control box, after an image to be mixed is input, measuring parameters corresponding to display indexes of the image and chromaticity of a display screen in a display equipment terminal to obtain corresponding parameter data;
the step S101 includes:
s1011: based on the Box IO, measuring the display index in the display index operation system software of the current Box IO to obtain display index data, wherein the display index data comprises: color temperature, brightness, and gamma;
s1012: measuring display parameters of a chromaticity standard color block of a display screen based on a colorimeter, and acquiring display parameter data;
s1013: preprocessing display index data and display parameter data to obtain a corresponding parameter data set;
s1021: processing the corresponding parameter data set by using a matrix algorithm in LUT operation software connected with the Box IO to obtain a conversion matrix corresponding to the brightness and the chromaticity;
s1022: constructing an LUT file based on a conversion matrix corresponding to brightness and chromaticity, and storing the LUT file in an LUT storage library;
s1031: editing the LUT file by using LUT running software to obtain controllable chromatic aberration;
s1032: in the controllable color difference range, carrying out on-site real-time color mixing processing on the original color data transmitted by the video signal receiver through real-time color mixing software matched with the Box IO;
s1033: in the field real-time toning processing process, real-time toning software analyzes the LUT file, then invokes corresponding colors in the LUT data, adjusts the color data in the original image based on the invoked colors, and displays the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
2. The method for performing in-situ real-time toning based on BoxIO according to claim 1, wherein said step S1032 comprises:
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
3. System for carrying out on-site real-time color mixing based on Box IO, which is characterized by comprising:
the measurement data acquisition unit is used for measuring parameters corresponding to the display index of the image and the chromaticity of the display screen in the display equipment terminal after the image to be mixed is input based on the box IO color control box, and acquiring corresponding parameter data;
the measurement data acquisition unit includes:
the measurement data obtaining first subunit is configured to measure, based on the BoxIO, a display index in display index operation system software of the current BoxIO, and obtain display index data, where the display index data includes: color temperature, brightness, and gamma;
the second subunit is used for measuring the display parameters of the chromaticity standard color block of the display screen based on the colorimeter to obtain display parameter data;
the measurement data acquisition third subunit is used for preprocessing the display index data and the display parameter data to acquire a corresponding parameter data set;
the LUT operation software first subunit is used for following the international display standard, and processing the corresponding parameter data set by using a matrix algorithm in the LUT operation software to obtain a conversion matrix corresponding to brightness and chromaticity;
the LUT operation software second subunit is used for constructing an LUT file based on the conversion matrix corresponding to the brightness and the chromaticity, and storing the LUT file in the LUT storage library;
the real-time toning software first subunit is used for editing the LUT file by using LUT operation software connected with the box IO to obtain controllable chromatic aberration;
the second subunit of the real-time toning software is used for carrying out on-site real-time toning processing on the original color data transmitted by the video signal receiver through the real-time toning software matched with the box IO in the controllable color difference range;
the real-time toning software third subunit is used for analyzing the LUT file by the real-time toning software in the on-site real-time toning processing process, then retrieving the corresponding color in the LUT data, adjusting the color data in the original image based on the retrieved color, and displaying the corresponding toning result on the display equipment terminal after obtaining the corresponding toning result.
4. The BoxIO-based live toning system of claim 3, wherein said live toning software second subunit comprises: a color balance controller;
creating a color grade library based on the color balance controller; based on the color grade library and the LUT file, carrying out grading toning division through real-time toning software, wherein the grading toning after division comprises: primary color mixing, secondary color mixing, tertiary color mixing and quaternary color mixing;
based on the classified hierarchical color matching, the original color data transmitted by the video signal receiver is subjected to on-site real-time color matching through real-time color matching software, the color matched data is added to a rendering queue for previewing after the on-site real-time color matching is finished, and the color matching result is confirmed through previewing and then stored in a file form.
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Address after: 518000, Building 5, Meinian International Plaza, Taohuayuan Community, Zhaoshang Street, Nanshan District, Shenzhen, Guangdong Province, China, 1301-1310 Patentee after: Shenzhen Zunzheng Technology Co.,Ltd. Guo jiahuodiqu after: Zhong Guo Address before: 518000 rooms 01, 02, 03, 04, 6th floor, building 2, meinian Plaza, west of Nanhai Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: SZ ZUNZHENG DIGITAL VIDEO Co.,Ltd. Guo jiahuodiqu before: Zhong Guo |