CN113096615B - Color matching monitor and color matching method - Google Patents
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Abstract
The invention relates to a color mixing monitor and a color mixing method, wherein the color mixing monitor comprises an acquisition module, a color matching module and a color matching module, wherein the acquisition module is used for acquiring 3D LUT data; the analysis module is connected with the acquisition module and used for analyzing whether the acquired 3D LUT data meets a preset condition or not, and if the acquired 3D LUT data meets the preset condition, the 3D LUT data meeting the preset condition is sent to the updating module; discarding the 3D LUT data if the predetermined condition is not met; the updating module is connected with the analyzing module and used for updating the 3D LUT data meeting the preset conditions and sending the updated 3D LUT data to the LUT mapping unit; the LUT mapping unit is connected with the updating module and used for carrying out new LUT mapping on the updated 3D LUT data; and the display module is connected with the LUT mapping unit and used for displaying the input image after the new LUT mapping. Correct 3D LUT data is updated to an LUT mapping unit in the toning monitor in real time through an analysis module and an updating module, and the real-time toning function can be realized through a simple framework.
Description
The application is a divisional application of a patent application named as 'color mixing monitor and real-time color mixing method', the application date of the original application is 11/28/2014, and the application number is 201480002959.7.
Technical Field
The present invention relates to the field of image processing technologies, and in particular, to a color mixing monitor and a color mixing method.
Background
Today, when the motion picture technology is digitized, the images are subjected to different systems, such as a picture taken by a digital camera, and the picture is subjected to color matching by a color matching system, then the image is recorded on a film by a film recorder, and finally the image is projected on a screen by a projection system. Each system has its own unique color space, i.e. the same image appears differently in different systems, and the task of color management is to understand the characteristics of the color spaces of these systems and unify the color spaces of different systems. In short, it is necessary to ensure the consistency between the images monitored during the production process and the final screen image.
Generally, the process of color management can be viewed as a process of converting colors between different color spaces. If no correction is made, the same picture has great difference in the different color spaces, and the picture on the monitor and the picture projected to the screen by the film copy have great difference; visually significant differences may occur between different monitors and different projection environments. In absolute terms, no two color space systems in the world are identical. Color management systems currently available in the market aim to minimize the visual difference between images on different media and display devices. The most important of these is to unify the monitor's picture during the digital toning process with the final film-to-screen picture so that they "look" more closely together, and only then provide a relatively "accurate" visual reference to the toning personnel. The conversion of such color space is often done by LUT mapping.
LUTs are further classified into 1D LUTs and 3D LUTs. The 3D LUT is well suited for accurate color calibration work because it can handle all display calibration issues, from simple gamma values, color range and tracking errors, to correcting advanced non-linear properties, color crosstalk (decoupling), hue, saturation, brightness, etc., including basically all possible display calibration issues.
However, the conventional process of performing color matching using a 3D LUT is very complicated, and an additional color matching box is usually required to perform color matching processing on the 3D LUT data. In this way, the monitor includes a 3D LUT mapping module, and the color box also includes a 3D LUT mapping module, where the 3D LUT mapping module in the monitor is used to implement color space mapping, and the 3D LUT mapping module in the color box is used for color matching processing. Thus, the system integration level is not high, and real-time color matching cannot be realized.
Disclosure of Invention
The invention aims to provide a color mixing monitor and a color mixing method, which are used for simplifying a color mixing system and realizing real-time color mixing.
In order to achieve the purpose, the invention provides the following scheme:
a color mixing monitor comprising:
an acquisition module for acquiring 3D LUT data; the 3D LUT data describes the corresponding relation between input RGB values and output RGB values;
the analysis module is used for analyzing whether the acquired 3D LUT data meets a preset condition or not, and if the acquired 3D LUT data meets the preset condition, the 3D LUT data meeting the preset condition is sent to the updating module; discarding the 3D LUT data if a predetermined condition is not met;
the updating module is connected with the analyzing module and used for updating the 3D LUT data meeting the preset conditions and sending the updated 3D LUT data to the LUT mapping unit;
the LUT mapping unit is connected with the updating module and used for carrying out new LUT mapping on the updated 3D LUT data;
and the display module is connected with the LUT mapping unit and used for displaying the input image after the new LUT mapping.
A method of toning comprising:
acquiring 3D LUT data; the 3D LUT data describes the corresponding relation between input RGB values and output RGB values;
analyzing whether the acquired 3D LUT data meets a preset condition, and if so, updating the 3D LUT data meeting the preset condition; discarding the 3D LUT data if a predetermined condition is not met;
performing new LUT mapping on the updated 3D LUT data;
the input image after the new LUT mapping is displayed.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the color mixing monitor and the color mixing method provided by the invention, correct 3D LUT data is updated to the LUT mapping unit in the color mixing monitor in real time through the analysis module and the updating module, and the real-time color mixing function can be realized through a simple framework.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a functional block diagram of a color mixing monitor according to embodiment 1 of the present invention.
Fig. 2 is a functional block diagram of a color mixing monitor according to embodiment 2 of the present invention.
Fig. 3 is a flowchart of a color matching method provided in embodiment 3 of the present invention.
Description of the symbols:
100-toning monitor, 10-LUT mapping unit, 20-receiving module, 30-resolving module, 40-response module, 50-updating module, 60-display module 60, 200-user operation terminal, 201-3D LUT data generating module, 202-sending module, 200 a-user operation terminal, 203-toning platform, 201a-3D LUT data generating module, 100 a-toning monitor, 50 a-updating module and 60 a-display module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a color mixing monitor and a color mixing method, which are used for simplifying a color mixing system and realizing real-time color mixing.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Example 1:
as shown in FIG. 1, the present invention provides a color mixing monitor 100 for real-time color mixing of an input image. The palette monitor 100 comprises a LUT mapping unit 10, a receiving module 20, a parsing module 30, a responding module 40, an updating module 50, and a display module 60.
LUT mapping is a bridge that connects different color spaces in the process of color management. The LUT mapping module may return an output value to an input value to the LUT mapping module. For example, in a first color space of a 10-bit RGB, a red is represented as R =640, g =102, b =94, and this red exists in a second color space of another 10-bit RGB, but is represented as R =600, g =90, b =145, then the LUT mapping module converting the first color space into the second color space must return values of R =600, g =90, b =145 after reading data R =640, g =102, b = 94. I.e. both the input values and the output values are RGB within the LUT mapping unit 10.
The receiving module 20 is configured to receive the 3D LUT data sent by the user operating end 200. Correspondingly, the receiving module 20 receives the 3D LUT data through one or more of an ethernet interface network, a Wifi interface network, a bluetooth interface network, a USB interface network, a serial interface network, a lightning interface network, or a 1394 interface network.
The parsing module 30 is configured to parse whether the 3D LUT data meets a predetermined condition, and if so, update the received 3D LUT data to the LUT mapping unit 10, and perform new LUT mapping; discarding the 3D LUT data if a predetermined condition is not met. Therefore, one important function of the parsing module 30 is to avoid data errors caused by network transmission errors. Specifically, the parsing module 30 may compare the data format, the data length, and/or the data check information of the received 3D LUT data with the preset corresponding conditions, if the data format, the data length, and/or the data check information match with the preset corresponding conditions, the parsing result is that the predetermined conditions are met, and if the data format, the data length, and/or the data check information do not match with the preset corresponding conditions, the parsing result is that the predetermined conditions are not met. The LUT mapping unit 10 may be implemented by an FPGA, an ASIC, or an external storage device. In this embodiment, the LUT mapping unit 10 is implemented by an FPGA.
The response module 40 is configured to feed back an analysis result of the analysis module 30 to the user operating end. In this embodiment, the response information fed back by the response module 40 is "correct received data" or "incorrect received data". Specifically, when the analysis result is that the predetermined condition is met, the response module 40 feeds back the information that the received data is correct, and when the analysis result is that the predetermined condition is not met, the response module 40 feeds back the information that the received data is incorrect.
The update module 50 is connected between the parsing module 30 and the LUT mapping unit 10. When the parsing result is that the predetermined condition is met, the parsing module 30 transmits the latest 3D LUT data to the updating module 50, and the updating module 50 updates the 3D LUT data to the LUT mapping unit 10 for new 3D LUT mapping. After the update is complete, the user can observe the change in video chromaticity on the screen of the palette monitor 100 in real time.
The display module 60 is configured to display the input image after being mapped by the new 3D LUT according to the parsing result of the parsing module 30. Specifically, the display module 60 is connected to the LUT mapping unit 10, so that the display module 60 acquires the input image after being mapped by the new 3D LUT from the LUT mapping unit 10 in real time and displays the input image.
As an optional implementation manner, the display module 60 may be further connected to the update module 50 and/or the LUT mapping unit 10, and when the parsing result is that a predetermined condition is met, the update module 50 outputs a control signal to the display module 60, so that the display module 60 acquires the input image after being mapped by the new 3D LUT from the LUT mapping unit 10 and displays the input image.
Also shown in fig. 1 is a user-operated terminal 200 connected to the color mixing monitor 100. The user operation terminal 200 includes color matching software, which may be PC color matching software, mac color matching software, mobile phone (such as iphone) color matching software, android system color matching software, or WP color matching software. In other embodiments, the user operation end 200 may also be a color adjusting table (specifically described in the second embodiment). Of course, the user operation terminal 200 is not limited thereto, and any device capable of outputting 3D LUT data may be used as the user operation terminal 200.
The user operating terminal 200 includes a 3D LUT data generating module 201 and a transmitting module 202. The 3D LUT data generating module 201 is configured to generate 3D LUT data according to an operation of a user. In this embodiment, the user adjusts parameters in the user operation end according to the color matching requirement of the user, so that the user operation end can execute some algorithms (such as an ACDL algorithm) to calculate the 3D LUT data. The correspondence of the input RGB values to the output RGB values is described in the 3D LUT data. The sending module 202 is configured to send the 3D LUT data to the palette monitor 100. In this embodiment, the sending module 202 sends the 3D LUT data to the palette monitor 100 through a communication network. It is understood that the sending module 202 may send the 3D LUT data through one or more of an ethernet interface network, a Wifi interface network, a bluetooth interface network, a USB interface network, a serial interface network, a thunderbolt interface network, or a 1394 interface network.
When the color mixing monitor 100 is used, the user generates 3D LUT data through the user operation terminal 200, and then transmits the 3D LUT data to the color mixing monitor 100. By the parsing and updating function, correct 3D LUT data can be updated in real time to the LUT mapping unit 10 inside the color tuning monitor 100, and a real-time color tuning function can be realized by a simple architecture.
Example 2:
referring to fig. 2, the user operating end 200a provided by the present invention is substantially the same as the user operating end 200 provided by embodiment 1, and the difference is that: the user operation terminal 200a includes a color matching platform 203, and the color matching platform 203 is connected to the color matching monitor 100a through a USB data line.
In addition, the palette monitor 100a includes a 3D LUT data generating module 201a, an updating module 50a, and a display module 60a.
The 3D LUT data generating module 201a is used for generating 3D LUT data according to the signal transmitted from the color matching stage 203. The palette may be a keyboard and/or a mouse. In this embodiment, a user operates a roller or a slider or a key of the color matching platform 203 according to a color matching requirement of the user, and the 3D LUT data generating module 201a reads information of the roller or the slider or the key of the color matching platform 203 in real time and generates the 3D LUT data according to a specific algorithm.
The updating module 50a is connected between the 3D LUT data generating module 201a and the LUT mapping unit 10a, and is configured to update the received 3D LUT data into the LUT mapping unit 10a and perform new 3D LUT mapping. The display module 60a is used for displaying the input image after the new 3D LUT mapping. The working principle of the update module 50a and the display module 60a is the same as that of the update module and the display module in the first embodiment, and therefore, the description thereof is omitted. It should be noted that, similar to the first embodiment, in other embodiments, the display module 60a may further be connected to the update module 50a and/or the LUT mapping unit 10a, and when the analysis result is that a predetermined condition is met, the update module 50a outputs a control signal to the display module 60a, so that the display module 60a acquires the input image after being mapped by the new 3D LUT from the LUT mapping unit 10a and displays the input image.
The palette monitor 100a directly generates the 3D LUT data and updates it more conveniently and quickly.
It is understood that the color mixing monitor 100a may also be provided with a parsing module (not shown) for parsing whether the 3D LUT data generated by the 3D LUT data generating module 201a meets a predetermined condition, and if so, updating the received 3D LUT data into the LUT mapping unit 10a and performing a new LUT mapping; discarding the 3D LUT data if a predetermined condition is not met. At this time, the parsing module will function to ensure that the 3D LUT data generating module 201a can generate correct 3D LUT data.
Example 3
Referring to fig. 3, the present invention provides a color matching method, including the following steps:
step S301: the user operation terminal 200/200a is connected. In this embodiment, the user operation terminal 200/200a is connected to at least one of an ethernet interface network, a Wifi interface network, a bluetooth interface network, a USB interface network, a serial interface network, a lightning interface network, and a 1394 interface network. The user operation terminal 200/200a comprises color matching software, and the color matching software can be PC color matching software, mac color matching software, mobile phone (such as iphone) color matching software, android system color matching software or WP color matching software. In this embodiment, the user operation terminal in embodiment or embodiment 2 is used. Of course, the user operation end is not limited thereto, and any device capable of providing a human-computer interaction function that is accurate and convenient to control may be used as the user operation end.
Step S303: 3D LUT data is acquired according to a user operation. The 3D LUT data may be the 3D LUT data transmitted by the user operating terminal 200/200a after the user operates the color matching software. Correspondingly, the 3D LUT data can be obtained through at least one of an Ethernet interface network, a Wifi interface network, a Bluetooth interface network, a USB interface network, a serial interface network, a thunder and lightning interface network and a 1394 interface network. The 3D LUT data may be 3D LUT data generated in the color tone monitor 100a when the user operates the color tone table 203.
Step S305: analyzing whether the 3D LUT data meets a predetermined condition, if so, executing step S307: updating the acquired 3D LUT data and performing new 3D LUT mapping; if the predetermined condition is not met, step S309 is performed: discarding the 3D LUT data. Specifically, during the analysis, the data format, the data length, and/or the data verification information of the received 3D LUT data may be compared with the preset corresponding condition, and if the data format, the data length, and/or the data verification information are matched, the analysis result is the predetermined condition, and if the data format, the data length, and/or the data verification information are not matched, the analysis result is the predetermined condition.
Step S311: and feeding back the analysis result to the user operation terminal 200/200a for the user to confirm whether to readjust the 3D LUT data. In this embodiment, the fed back response information is "received data is correct" or "received data is incorrect", when the analysis result meets the predetermined condition, the information of "received data is correct" is fed back, and when the analysis result does not meet the predetermined condition, the information of "received data is incorrect" is fed back. At this time, the user needs to readjust the 3D LUT data.
Step S313: the input image after the new 3D LUT mapping is displayed.
It should be noted that the present invention does not limit the execution sequence of the steps.
By adopting the color mixing monitor and the color mixing method, after a user generates 3D LUT data through a user operation end or directly generates the 3D LUT data in the color mixing monitor, the 3D LUT data is updated to an LUT mapping unit in real time and displayed in real time. Therefore, the real-time color matching function can be realized through a simple framework.
It should be noted that, through the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by software plus a necessary hardware platform, and of course, can also be implemented by hardware entirely. With this understanding in mind, the technical solutions of the present invention may be embodied in whole or in part in the form of a software product, which may be stored in a storage medium such as ROM/RAM, a magnetic disk, an optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods according to the embodiments or some parts of the embodiments.
Claims (6)
1. A color mixing monitor, the color mixing monitor comprising:
an acquisition module for acquiring 3D LUT data; the 3D LUT data describes the corresponding relation between input RGB values and output RGB values;
the analysis module is used for analyzing whether the acquired 3D LUT data meets a preset condition or not, and if the acquired 3D LUT data meets the preset condition, the 3D LUT data meeting the preset condition is sent to the updating module; discarding the 3D LUT data if a predetermined condition is not met;
the analysis module is used for comparing the data format, the data length and/or the data verification information of the received 3D LUT data with preset corresponding conditions, if the data format, the data length and/or the data verification information are matched, the analysis result is in accordance with the preset conditions, the response module returns response information that the received data is correct, if the data format, the data length and/or the data verification information are not matched, the analysis result is not in accordance with the preset conditions, and the response module returns response information that the received data is wrong;
the updating module is connected with the analyzing module and used for updating the 3D LUT data meeting the preset conditions and sending the updated 3D LUT data to the LUT mapping unit;
the LUT mapping unit is connected with the updating module and used for carrying out new LUT mapping on the updated 3DLUT data;
the display module is connected with the LUT mapping unit and used for displaying the input image after the new LUT mapping;
and the response module is used for feeding back the analysis result of the analysis module to a user operation end so that a user can confirm whether to readjust the 3D LUT data or not.
2. A toning monitor as recited in claim 1, wherein the toning monitor further comprises: and the 3D LUT data generation module is used for generating the 3D LUT data according to the user operation parameters.
3. A color mixing monitor as defined in claim 1, wherein: the color mixing monitor receives the 3D LUT data from a user operation end through a sending module, and the sending module is connected with the color mixing monitor through one or more of an Ethernet interface network, a Wifi interface network, a Bluetooth interface network, a USB interface network, a serial interface network, a thunder interface network or a 1394 interface network.
4. A toning monitor as recited in claim 3, wherein the user operating end includes toning software, and the toning software is PC toning software, mac toning software, mobile phone toning software, android system toning software or WP toning software.
5. A tone monitor according to claim 1, wherein the LUT mapping unit is implemented by an FPGA or an ASIC.
6. A method of toning, comprising:
acquiring 3D LUT data; the 3D LUT data describes the corresponding relation between the input RGB value and the output RGB value;
analyzing whether the acquired 3D LUT data meets a preset condition, and if so, updating the 3D LUT data meeting the preset condition; discarding the 3D LUT data if a predetermined condition is not met;
performing new LUT mapping on the updated 3D LUT data;
displaying the input image after the new LUT mapping;
the color matching method further comprises:
feeding back the analysis result to a user operation terminal for a user to confirm whether to readjust the 3D LUT data;
the analyzing whether the acquired 3D LUT data meets a predetermined condition specifically includes:
comparing the data format, the data length and/or the data verification information of the received 3D LUT data with preset corresponding conditions;
if the data are matched, the analysis result is in accordance with the preset condition, and response information of 'correct received data' is returned;
if not, the analysis result is that the preset condition is not met, and response information of 'receiving data error' is returned.
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| CN201480002959.7A CN104813363A (en) | 2014-11-28 | 2014-11-28 | Color modulation and real-time color modulation method |
| CN202110482505.6A CN113096615B (en) | 2014-11-28 | 2014-11-28 | Color matching monitor and color matching method |
| PCT/CN2014/092432 WO2016082173A1 (en) | 2014-11-28 | 2014-11-28 | Toning monitor and real-time toning method |
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| CN107577402A (en) * | 2017-09-12 | 2018-01-12 | 北京强氧新科信息技术有限公司 | Control method and control device |
| CN112530382B (en) * | 2019-09-19 | 2022-05-13 | 华为技术有限公司 | Method and device for adjusting picture color of electronic equipment |
| CN115798374B (en) * | 2022-11-15 | 2023-08-01 | 深圳市尊正数字视频有限公司 | System and method for carrying out on-site real-time color matching based on Box IO |
| CN116760958B (en) * | 2023-08-22 | 2023-12-19 | 北京象帝先计算技术有限公司 | Image processing apparatus, system, component, device, and method |
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| CN104813363A (en) | 2015-07-29 |
| CN113096615A (en) | 2021-07-09 |
| WO2016082173A1 (en) | 2016-06-02 |
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