CN114360466B - Display correction method, device, electronic device and storage medium of display - Google Patents
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Abstract
Description
技术领域technical field
本发明涉及图像显示技术领域，尤其涉及显示器的显示校正方法、装置、电子设备和存储介质。The invention relates to the technical field of image display, in particular to a display correction method, device, electronic equipment and storage medium of a display.
背景技术Background technique
市面上大部分显示器采用液晶显示屏，而液晶显示屏常常会出现亮度和色度显示不均匀的情况，这使得液晶显示屏的校正需求越来越多，但是受专业性限制，液晶显示屏的显示校正通常由显示器厂商进行，对于企业用户以及其它终端用户来讲比较困难；因此研发出适用于普通用户的显示器显示校正策略是非常有必要的。Most of the monitors on the market use LCD screens, and LCD screens often have uneven brightness and chromaticity display, which makes the calibration of LCD screens more and more required. However, due to professional limitations, LCD screens Display calibration is usually performed by monitor manufacturers, which is difficult for enterprise users and other end users; therefore, it is necessary to develop a monitor display calibration strategy suitable for ordinary users.
目前，普通用户可使用如图1所示的显示校正方法，显示器出厂前厂商设定了很多组gamma值和色温值，且将每一组gamma值和色温值对应的LUT数据预先存储在E2PROM中；较正时首先导入用户选择的gamma值和色温值，其次从数据库中提取出相对应的LUT数据，并写入LUT表；最后设置生效以对显示器进行显示校正。At present, ordinary users can use the display calibration method shown in Figure 1. Before the display leaves the factory, the manufacturer has set many sets of gamma values and color temperature values, and the LUT data corresponding to each set of gamma values and color temperature values is pre-stored in E2PROM. ; When correcting, first import the gamma value and color temperature value selected by the user, and then extract the corresponding LUT data from the database and write it into the LUT table; finally, the settings will take effect to perform display calibration on the monitor.
但是，这种方式存在以下几点缺陷：However, this approach has the following drawbacks:
(1)：LUT数据读取需要一定时间，且在连续进行多次显示器校正的情况下，非常容易卡顿。(1): It takes a certain amount of time to read the LUT data, and it is very easy to freeze when performing multiple display calibrations continuously.
(2)：当gamma值和色温值的组数较多时，需要扩充E2PROM的存储空间；(2): When there are many groups of gamma value and color temperature value, it is necessary to expand the storage space of E2PROM;
(3)：在连续进行多次显示器校正的情况下，会有一定的概率出现LUT数据读取异常。(3): In the case of continuous display calibration for many times, there will be a certain probability that the reading of LUT data will be abnormal.
发明内容Contents of the invention
针对现有技术存在的问题，本发明实施例提供一种克服上述问题或者至少部分地解决上述问题的显示器的显示校正方法、装置、电子设备和存储介质。In view of the problems existing in the prior art, embodiments of the present invention provide a display calibration method, device, electronic device, and storage medium for overcoming the above problems or at least partially solving the above problems.
第一方面，本发明实施例提供一种显示器的显示校正方法，所述方法包括：In a first aspect, an embodiment of the present invention provides a display calibration method for a display, the method comprising:
获取目标gamma值和目标色温值；Obtain the target gamma value and target color temperature value;
基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；Perform display correction on the display based on the target gamma value, the target color temperature value, the standard gamma curve of the display and the standard chromaticity curve of the display;
其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。Wherein, the standard gamma curve of the display and the standard chromaticity curve of the display are obtained by synchronously correcting the gamma curve and the chromaticity curve of the display screen in advance based on the standard gamma value and the standard color temperature value.
根据本发明提供的显示器的显示校正方法，所述基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正，包括：According to the display correction method provided by the present invention, performing display correction on the display based on the target gamma value, the target color temperature value, the display standard gamma curve and the display standard chromaticity curve includes:
根据所述标准gamma值和所述显示器标准gamma曲线，确定所述目标gamma值对应的gamma曲线；determining a gamma curve corresponding to the target gamma value according to the standard gamma value and the display standard gamma curve;
基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线；determining a chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display;
从所述目标gamma值对应的gamma曲线中抽取各灰阶阶次对应的亮度值，并从所述目标色温值对应的色度曲线中抽取各灰阶阶次对应的色度值；Extracting brightness values corresponding to each gray scale from a gamma curve corresponding to the target gamma value, and extracting chromaticity values corresponding to each gray scale from a chromaticity curve corresponding to the target color temperature value;
基于所述各灰阶阶次对应的亮度值和色度值，生成LUT查找表；Generate a LUT lookup table based on the luminance value and chrominance value corresponding to each gray scale order;
按照所述LUT查找表，对显示器进行亮度显示校正和色度显示校正。Perform brightness display correction and chromaticity display correction on the display according to the LUT lookup table.
根据本发明提供的显示器的显示校正方法，所述基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线，包括：According to the display calibration method provided by the present invention, the determination of the chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display includes:
基于所述目标色温值确定目标色度值；determining a target chromaticity value based on the target color temperature value;
采用分段且拐点平滑法，对所述目标色度值，以及显示器标准色度曲线中最低灰阶阶次对应的色度值和最高灰阶阶次对应的色度值进行拟合，得到所述目标色温值对应的色度曲线。Using the segmentation and inflection point smoothing method, the target chromaticity value, and the chromaticity value corresponding to the lowest gray-scale order and the chromaticity value corresponding to the highest gray-scale order in the standard chromaticity curve of the display are fitted, and the obtained The chromaticity curve corresponding to the target color temperature value.
根据本发明提供的显示器的显示校正方法，所述标准gamma值和标准色温值，在显示器出厂前预先设定的。According to the display calibration method provided by the present invention, the standard gamma value and standard color temperature value are preset before the display leaves the factory.
根据本发明提供的显示器的显示校正方法，所述标准gamma值取值为1；According to the display correction method of the display provided by the present invention, the value of the standard gamma value is 1;
所述标准色温值为7500K-9300K之间的一个数值。The standard color temperature value is a value between 7500K-9300K.
根据本发明提供的显示器的显示校正方法，所述显示器屏幕的gamma曲线和色温曲线，是利用色温仪测量得到的；According to the display correction method of the display provided by the present invention, the gamma curve and the color temperature curve of the display screen are measured by a color temperature meter;
所述目标gamma值和目标色温值，是由终端用户给定的。The target gamma value and target color temperature value are given by the end user.
第二方面，本发明还提供一种显示器的显示校正装置，所述装置包括：In a second aspect, the present invention also provides a display correction device for a display, the device comprising:
数据获取模块，用于获取目标gamma值和目标色温值；A data acquisition module, configured to acquire a target gamma value and a target color temperature value;
校正模块，用于基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；A correction module, configured to perform display correction on the display based on the target gamma value, the target color temperature value, the standard gamma curve of the display and the standard chromaticity curve of the display;
其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。Wherein, the standard gamma curve of the display and the standard chromaticity curve of the display are obtained by synchronously correcting the gamma curve and the chromaticity curve of the display screen in advance based on the standard gamma value and the standard color temperature value.
根据本发明提供的显示器的显示校正装置，所述校正模块，包括：According to the display correction device of the display provided by the present invention, the correction module includes:
gamma曲线确定单元，用于根据所述标准gamma值和所述显示器标准gamma曲线，确定所述目标gamma值对应的gamma曲线；a gamma curve determining unit, configured to determine a gamma curve corresponding to the target gamma value according to the standard gamma value and the display standard gamma curve;
色度曲线确定单元，用于基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线；A chromaticity curve determining unit, configured to determine a chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display;
抽取单元，用于从所述目标gamma值对应的gamma曲线中抽取各灰阶阶次对应的亮度值，并从所述目标色温值对应的色度曲线中抽取各灰阶阶次对应的色度值；An extraction unit, configured to extract the brightness value corresponding to each gray scale from the gamma curve corresponding to the target gamma value, and extract the chromaticity corresponding to each gray scale from the chromaticity curve corresponding to the target color temperature value value;
LUT查找表生成单元，用于基于所述各灰阶阶次对应的亮度值和色度值，生成LUT查找表；A LUT lookup table generating unit, configured to generate a LUT lookup table based on the luminance values and chrominance values corresponding to the gray scales;
校正单元，用于按照所述LUT查找表，对显示器进行亮度显示校正和色度显示校正。The correction unit is configured to perform brightness display correction and chromaticity display correction on the display according to the LUT look-up table.
第三方面，本发明还提供一种电子设备，包括存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述处理器执行所述程序时实现如第一方面所述显示器的显示校正方法的步骤。In the third aspect, the present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and operable on the processor, when the processor executes the program, the following On the one hand, the steps of the display correction method of the display.
第四方面，本发明还提供一种非暂态计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现如第一方面所述显示器的显示校正方法的步骤。In a fourth aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the display correction method for a display as described in the first aspect are implemented.
本发明提供的显示器的显示校正方法、装置、电子设备和存储介质，显示器在出厂前预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正，得到显示器标准gamma曲线和显示器标准色度曲线，消除了显示器自身的制造元件和参数校对给后续用户校正带来的干扰，且在用户校正阶段只需根据终端用户给定的目标gamma值和目标色温值，参考显示器标准gamma曲线和显示器标准色度曲线，并使用简单的算法即可生成对应的LUT表，从而完成对显示器的显示校正；直接跳过了现有技术中的LUT数据读取，进而减少了LUT数据存储空间的使用，提高了校正效率，并减少了因LUT数据读取错误造成的校正失误率。The display correction method, device, electronic equipment and storage medium provided by the present invention, before the display leaves the factory, based on the standard gamma value and standard color temperature value, the gamma curve and chromaticity curve of the display screen are synchronously corrected to obtain the standard gamma of the display The curve and the standard chromaticity curve of the display eliminate the interference caused by the manufacturing components and parameter calibration of the display itself to the subsequent user calibration, and only need to refer to the display according to the target gamma value and target color temperature value given by the end user during the user calibration stage Standard gamma curve and display standard chromaticity curve, and use a simple algorithm to generate the corresponding LUT table, so as to complete the display calibration of the display; directly skip the LUT data reading in the prior art, thereby reducing the LUT data The use of the storage space improves the calibration efficiency and reduces the calibration error rate caused by LUT data reading errors.
附图说明Description of drawings
为了更清楚地说明本发明或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the present invention or the technical solutions in the prior art, the accompanying drawings that need to be used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description are the present invention. For some embodiments of the invention, those skilled in the art can also obtain other drawings based on these drawings without creative effort.
图1是现有技术提供的显示校正方法的流程示意图；Fig. 1 is a schematic flow chart of a display correction method provided by the prior art;
图2是本发明提供的显示器的显示校正方法的流程示意图；Fig. 2 is a schematic flow chart of a display correction method for a display provided by the present invention;
图3是本发明提供的LUT表示例图；FIG. 3 is an example diagram of a LUT table provided by the present invention;
图4是本发明提供的显示器的显示校正装置结构示意图；Fig. 4 is a schematic structural diagram of a display correction device of a display provided by the present invention;
图5是本发明提供的实现显示器的显示校正方法的电子设备的结构示意图。FIG. 5 is a schematic structural diagram of an electronic device implementing a display correction method provided by the present invention.
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面将结合本发明中的附图，对本发明中的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
下面结合图2-图5描述本发明提供的显示器的显示校正方法、装置、电子设备和存储介质。The display correction method, device, electronic equipment and storage medium of the display provided by the present invention will be described below with reference to FIGS. 2-5 .
第一方面，如图2所示，本发明提供的显示器的显示校正方法，包括：In the first aspect, as shown in FIG. 2, the display correction method of the display provided by the present invention includes:
S11、获取目标gamma值和目标色温值；S11. Obtain a target gamma value and a target color temperature value;
本发明的目的是使终端用户能够跨越专业性限制，以自身需求为依据便捷精准的实现显示器的显示校正。因此，首先需要获取终端用户给定的校正标准，即目标gamma值和目标色温值。The purpose of the present invention is to enable end users to overcome professional limitations and conveniently and accurately realize display calibration based on their own needs. Therefore, it is first necessary to obtain the calibration standard given by the end user, that is, the target gamma value and the target color temperature value.
S12、基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；S12. Perform display correction on the display based on the target gamma value, the target color temperature value, the display standard gamma curve and the display standard chromaticity curve;
需要了解的是，gamma曲线是灰阶阶次与亮度值的映射关系曲线，色度曲线是灰阶阶次与色度值的映射关系曲线；What needs to be understood is that the gamma curve is the mapping relationship curve between the gray scale level and the brightness value, and the chromaticity curve is the mapping relationship curve between the gray scale level and the chromaticity value;
采用现有技术进行显示校正时，假设LUT表的位深为10bit，则LUT表的形式如图3所示，LUT表中R、G、B数据均为0～1024之间的值，对应两个byte数据，那么进行一次校正需要读取的LUT数据的数据总量为256*3*2(1536个byte数据)；When using the existing technology for display calibration, assuming that the bit depth of the LUT table is 10 bits, the form of the LUT table is shown in Figure 3. The R, G, and B data in the LUT table are all values between 0 and 1024, corresponding to two byte data, then the total amount of LUT data that needs to be read for a calibration is 256*3*2 (1536 byte data);
可以很容易看出，现有技术存在以下缺陷：It can be easily seen that the prior art has the following defects:
(1)：1536个byte数据读取需要一定时间，且在连续进行多次显示器校正的情况下，非常容易卡顿。(1): It takes a certain amount of time to read 1536 bytes of data, and it is very easy to freeze when performing multiple display calibrations continuously.
(2)：当gamma值和色温值的组数较多时，需要扩充E2PROM的存储空间；(2): When there are many groups of gamma value and color temperature value, it is necessary to expand the storage space of E2PROM;
(3)：在连续进行多次显示器校正的情况下，会有一定的概率出现LUT数据读取异常。(3): In the case of continuous display calibration for many times, there will be a certain probability that the reading of LUT data will be abnormal.
而本发明，在终端用户有显示器校正需求的情况下，先获取目标gamma值和目标色温值，然后将目标gamma值、目标色温值、显示器标准gamma曲线和显示器标准色度曲线导入功能插件，得到对应的LUT表；最后按照LUT表完成对显示器的显示校正；该功能插件中封装有简单的算法，能依次完成下述步骤：However, in the present invention, when the terminal user has a need for display calibration, the target gamma value and target color temperature value are obtained first, and then the target gamma value, target color temperature value, display standard gamma curve and display standard chromaticity curve are imported into the function plug-in to obtain The corresponding LUT table; finally complete the display calibration of the display according to the LUT table; the function plug-in is packaged with a simple algorithm, which can complete the following steps in sequence:
(1)：通过显示器标准gamma曲线推导出以目标gamma值为依据校正时应生成的gamma曲线，并通过显示器标准色度曲线推导出以目标色温值为依据校正时应生成的色度曲线；(1): Deduce the gamma curve that should be generated when the calibration is based on the target gamma value through the standard gamma curve of the monitor, and deduce the chromaticity curve that should be generated when the calibration is based on the target color temperature value through the standard chromaticity curve of the monitor;
(2)：抽取各灰阶阶次对应的亮度值和色度值；(2): Extract the brightness value and chroma value corresponding to each gray scale;
(3)：利用各灰阶阶次对应的亮度值和色度值生成LUT表。(3): A LUT table is generated by using the luminance value and chrominance value corresponding to each gray scale.
本发明不需要进行大量的LUT数据读取，从源头上解决现有技术存在的弊端，且算法简单，能保证显示校正的效率和精确度。The invention does not need to read a large amount of LUT data, solves the disadvantages of the prior art from the source, and has a simple algorithm, which can ensure the efficiency and accuracy of display correction.
需要了解的是，终端用户通过触屏、键盘输入和鼠标点击等方式给出目标gamma值和目标色温值。What needs to be understood is that the end user provides the target gamma value and target color temperature value through touch screen, keyboard input and mouse click.
其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。Wherein, the standard gamma curve of the display and the standard chromaticity curve of the display are obtained by synchronously correcting the gamma curve and the chromaticity curve of the display screen in advance based on the standard gamma value and the standard color temperature value.
需要了解的是，显示器屏幕的gamma曲线和色度曲线进行同步校正采用的现有技术，在此不做限制。What needs to be understood is that there is no limitation to the prior art adopted for synchronously correcting the gamma curve and the chromaticity curve of the display screen.
另外，显示器等设备色彩即便是相同品牌相同型号所呈现出来的色彩都会不同，主要差别就在于制造元件的细微差异和参数校对的不同使得色域都不可能完全一致，因此本发明采用预先校正的方式，即预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到显示器标准gamma曲线和显示器标准色度曲线的方式，消除显示器自身的制造元件和参数校对情况对后续用户校正产生的干扰，只要用户在预校正的基础上进行校正，即可保证校正的精度。In addition, the colors of monitors and other equipment will be different even if they are of the same brand and the same model. The method, that is, based on the standard gamma value and standard color temperature value, synchronously corrects the gamma curve and chromaticity curve of the display screen to obtain the standard gamma curve and standard chromaticity curve of the display, eliminating the manufacturing components and parameter calibration of the display itself As for the interference caused by subsequent user calibration, as long as the user performs calibration on the basis of pre-calibration, the accuracy of calibration can be guaranteed.
本发明提供的显示器的显示校正方法，显示器在出厂前预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正，得到显示器标准gamma曲线和显示器标准色度曲线，消除了显示器自身的制造元件和参数校对给后续用户校正带来的干扰，且在用户校正阶段只需根据终端用户给定的目标gamma值和目标色温值，参考显示器标准gamma曲线和显示器标准色度曲线，并使用简单的算法即可生成对应的LUT表，从而完成对显示器的显示校正；直接跳过了现有技术中的LUT数据读取，进而减少了LUT数据存储空间的使用，提高了校正效率，并减少了因LUT数据读取错误造成的校正失误率。In the display correction method provided by the present invention, the display is based on the standard gamma value and the standard color temperature value before leaving the factory, and the gamma curve and the chromaticity curve of the display screen are synchronously corrected to obtain the standard gamma curve and the standard chromaticity curve of the display. Eliminate the interference caused by the manufacturing components and parameter calibration of the display itself to the subsequent user calibration, and only need to refer to the standard gamma curve of the display and the standard chromaticity of the display according to the target gamma value and target color temperature value given by the end user in the user calibration stage curve, and use a simple algorithm to generate the corresponding LUT table, thereby completing the display calibration of the display; directly skipping the LUT data reading in the prior art, thereby reducing the use of LUT data storage space and improving the calibration Efficiency, and reduce the correction error rate caused by LUT data reading errors.
在上述各实施例的基础上，作为一种可选的实施例，所述基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正，包括：On the basis of the above embodiments, as an optional embodiment, the display is calibrated based on the target gamma value, the target color temperature value, the standard gamma curve of the display and the standard chromaticity curve of the display, include:
根据所述标准gamma值和所述显示器标准gamma曲线，确定所述目标gamma值对应的gamma曲线；determining a gamma curve corresponding to the target gamma value according to the standard gamma value and the display standard gamma curve;
假设标准gamma值为1，则显示器标准gamma曲线为gamma1.0的形式，即Y＝W；其中，W为灰阶值，Y为亮度；此时假设目标gamma值为2.2，即目标gamma值对应的gamma曲线应该为Y＝W2.2；可以看出，在已知Y＝W的情况下，很容易按照现有算法推算出Y＝W2.2，具体推算过程是现有技术，在此不做赘述。Assuming that the standard gamma value is 1, the standard gamma curve of the display is in the form of gamma1.0, that is, Y=W; where W is the grayscale value and Y is the brightness; at this time, suppose the target gamma value is 2.2, that is, the target gamma value corresponds to The gamma curve should be Y=W 2.2 ; it can be seen that in the case of known Y=W, it is easy to calculate Y=W 2.2 according to the existing algorithm, and the specific calculation process is the existing technology, so I won’t repeat it here .
基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线；determining a chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display;
从所述目标gamma值对应的gamma曲线中抽取各灰阶阶次对应的亮度值，并从所述目标色温值对应的色度曲线中抽取各灰阶阶次对应的色度值；Extracting brightness values corresponding to each gray scale from a gamma curve corresponding to the target gamma value, and extracting chromaticity values corresponding to each gray scale from a chromaticity curve corresponding to the target color temperature value;
基于所述各灰阶阶次对应的亮度值和色度值，生成LUT查找表；Generate a LUT lookup table based on the luminance value and chrominance value corresponding to each gray scale order;
在本发明技术领域中，LUT查找表是由R、G、B和灰阶值构成的表单，因此需要利用各灰阶阶次对应的亮度值和色度值，计算对应的R、G、B的值；In the technical field of the present invention, the LUT lookup table is a table composed of R, G, B and grayscale values, so it is necessary to use the brightness values and chromaticity values corresponding to each grayscale level to calculate the corresponding R, G, B value;
设定Y、x和y分别为亮度值、色度x的值和色度y的值，那么可以按照下述公式进行Set Y, x and y as brightness value, chromaticity x value and chromaticity y value respectively, then it can be performed according to the following formula
X＝x/y,Y＝Y,Z＝(1-x-y)/y×YX=x/y, Y=Y, Z=(1-x-y)/y×Y
其中，X,Z均为中间值。Among them, X and Z are intermediate values.
需要说明的一点是，上述公式中的数字仅是一种示例，可以用其它合理的数字替换。It should be noted that the numbers in the above formulas are just examples and can be replaced with other reasonable numbers.
按照所述LUT查找表，对显示器进行亮度显示校正和色度显示校正。Perform brightness display correction and chromaticity display correction on the display according to the LUT lookup table.
本发明显示校正以终端用户意愿为主导并在预先校正得到的显示器标准gamma曲线和显示器标准色度曲线的基础上实现的，校正过程只需要通过简单的数学计算即可获得用于校正显示屏的LUT表，使得专业显示厂商后端的企业级用户和其它终端用户，可以便捷的进行专业曲线的调整，且调教精准度可以符合校准标准，尤其适用于医疗定制的企业用户。The display calibration of the present invention is dominated by the will of the end user and is realized on the basis of the pre-corrected display standard gamma curve and display standard chromaticity curve. The correction process only needs to be obtained through simple mathematical calculations. The LUT table enables enterprise users and other end users in the back end of professional display manufacturers to easily adjust professional curves, and the adjustment accuracy can meet the calibration standards, especially for enterprise users of medical customization.
在上述各实施例的基础上，作为一种可选的实施例，所述基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线，包括：On the basis of the above embodiments, as an optional embodiment, the determining the chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display includes:
基于所述目标色温值确定目标色度值；determining a target chromaticity value based on the target color temperature value;
需要了解的是，根据色温值计算色度值的算法是本领域基础的算法，这里不做赘述。It should be understood that the algorithm for calculating the chromaticity value based on the color temperature value is a basic algorithm in the field, and will not be repeated here.
采用分段且拐点平滑法，对所述目标色度值，以及显示器标准色度曲线中最低灰阶阶次对应的色度值和最高灰阶阶次对应的色度值进行拟合，得到所述目标色温值对应的色度曲线。Using the segmentation and inflection point smoothing method, the target chromaticity value, and the chromaticity value corresponding to the lowest gray-scale order and the chromaticity value corresponding to the highest gray-scale order in the standard chromaticity curve of the display are fitted, and the obtained The chromaticity curve corresponding to the target color temperature value.
在本发明技术领域中，也可使用多次多项式法等其它拟合算法进行拟合操作；这里的色度曲线包括色度x曲线和色度y曲线。In the technical field of the present invention, other fitting algorithms such as multi-degree polynomial method can also be used for fitting operations; the chromaticity curves here include chromaticity x curves and chromaticity y curves.
本发明根据目标色温值，采用简单的算法即可得到期望的色度曲线，为后续获得用于校正显示屏的LUT表提供基础。According to the target color temperature value, the present invention adopts a simple algorithm to obtain the expected chromaticity curve, which provides a basis for subsequent obtaining of the LUT table used for calibrating the display screen.
在上述各实施例的基础上，作为一种可选的实施例，所述标准gamma值和标准色温值，在显示器出厂前预先设定的。On the basis of the above embodiments, as an optional embodiment, the standard gamma value and the standard color temperature value are preset before the display leaves the factory.
通常情况下，在显示屏出厂前厂商校正专家会基于经验或者调试给出能使显示屏有较好显示效果的标准gamma值和标准色温值，然后将显示屏的gamma曲线预制到显示器标准gamma曲线，将色度曲线预制到显示器标准色度曲线；Usually, before the display leaves the factory, the calibration experts of the manufacturer will give the standard gamma value and standard color temperature value that can make the display have a better display effect based on experience or debugging, and then prefabricate the gamma curve of the display to the standard gamma curve of the display , prefabricate the chromaticity curve to the display standard chromaticity curve;
显示器厂商还会将显示器标准gamma曲线和显示器标准色度曲线信息告知终端用户，以便用户执行对显示器的校正操作。The monitor manufacturer will also inform the end user of the monitor standard gamma curve and the monitor standard chromaticity curve information, so that the user can perform a calibration operation on the monitor.
在上述各实施例的基础上，作为一种可选的实施例，所述标准gamma值取值为1；On the basis of the above embodiments, as an optional embodiment, the standard gamma value is 1;
所述标准色温值为7500K-9300K之间的一个数值。The standard color temperature value is a value between 7500K-9300K.
在本发明中，标准gamma值取值为1，则显示器标准gamma曲线为线性曲线，会使本发明目标gamma值对应的gamma曲线的计算算法更为简单。In the present invention, if the standard gamma value is 1, the standard gamma curve of the display is a linear curve, which makes the calculation algorithm of the gamma curve corresponding to the target gamma value of the present invention simpler.
通常，7500K-9300K是广为应用的显示屏色温值，因此本发明选定7500K-9300K中的一个值作为标准色温值。Usually, 7500K-9300K is a widely used display color temperature value, so the present invention selects a value from 7500K-9300K as the standard color temperature value.
在上述各实施例的基础上，作为一种可选的实施例，所述显示器屏幕的gamma曲线和色温曲线，是利用色温仪测量得到的；On the basis of the above-mentioned embodiments, as an optional embodiment, the gamma curve and the color temperature curve of the display screen are obtained by measuring with a color temperature meter;
所述目标gamma值和目标色温值，是由终端用户给定的。The target gamma value and target color temperature value are given by the end user.
在本发明中，因为显示器屏幕的gamma曲线和色温曲线是显示屏的固有曲线，可用于测量它的仪器是多样的，例如还可以采用其它光学传感器测量。In the present invention, since the gamma curve and color temperature curve of the display screen are inherent curves of the display screen, various instruments can be used to measure it, for example, other optical sensors can also be used for measurement.
第二方面，对本发明提供的显示器的显示校正装置进行描述，下文描述的显示器的显示校正装置与上文描述的显示器的显示校正方法可相互对应参照。图4示例了一种显示器的显示校正装置的结构示意图，如图4所示，该装置包括：数据获取模块21和校正模块22；In the second aspect, the display calibration device provided by the present invention is described. The display calibration device described below and the display calibration method described above can be referred to in correspondence. FIG. 4 illustrates a schematic structural view of a display correction device for a display. As shown in FIG. 4 , the device includes: a
其中，所述数据获取模块，用于获取目标gamma值和目标色温值；Wherein, the data acquisition module is used to acquire a target gamma value and a target color temperature value;
所述校正模块，用于基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；The correction module is used to perform display correction on the display based on the target gamma value, the target color temperature value, the display standard gamma curve and the display standard chromaticity curve;
其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。Wherein, the standard gamma curve of the display and the standard chromaticity curve of the display are obtained by synchronously correcting the gamma curve and the chromaticity curve of the display screen in advance based on the standard gamma value and the standard color temperature value.
在上述各实施例的基础上，作为一种可选的实施例，所述校正模块，包括：On the basis of the above embodiments, as an optional embodiment, the correction module includes:
gamma曲线确定单元，用于根据所述标准gamma值和所述显示器标准gamma曲线，确定所述目标gamma值对应的gamma曲线；a gamma curve determining unit, configured to determine a gamma curve corresponding to the target gamma value according to the standard gamma value and the display standard gamma curve;
色度曲线确定单元，用于基于所述显示器标准色度曲线，确定所述目标色温值对应的色度曲线；A chromaticity curve determining unit, configured to determine a chromaticity curve corresponding to the target color temperature value based on the standard chromaticity curve of the display;
抽取单元，用于从所述目标gamma值对应的gamma曲线中抽取各灰阶阶次对应的亮度值，并从所述目标色温值对应的色度曲线中抽取各灰阶阶次对应的色度值；An extraction unit, configured to extract the brightness value corresponding to each gray scale from the gamma curve corresponding to the target gamma value, and extract the chromaticity corresponding to each gray scale from the chromaticity curve corresponding to the target color temperature value value;
LUT查找表生成单元，用于基于所述各灰阶阶次对应的亮度值和色度值，生成LUT查找表；A LUT lookup table generating unit, configured to generate a LUT lookup table based on the luminance values and chrominance values corresponding to the gray scales;
校正单元，用于按照所述LUT查找表，对显示器进行亮度显示校正和色度显示校正。The correction unit is configured to perform brightness display correction and chromaticity display correction on the display according to the LUT look-up table.
在上述各实施例的基础上，作为一种可选的实施例，所述色度曲线确定单元，包括：On the basis of the foregoing embodiments, as an optional embodiment, the chromaticity curve determination unit includes:
确定子单元，用于基于所述目标色温值确定目标色度值；A determining subunit, configured to determine a target chromaticity value based on the target color temperature value;
拟合子单元，用于采用分段且拐点平滑法，对所述目标色度值，以及显示器标准色度曲线中最低灰阶阶次对应的色度值和最高灰阶阶次对应的色度值进行拟合，得到所述目标色温值对应的色度曲线。The fitting subunit is used to use the segmentation and inflection point smoothing method to calculate the target chromaticity value, as well as the chromaticity value corresponding to the lowest gray-scale order and the chromaticity corresponding to the highest gray-scale order in the standard chromaticity curve of the display The value is fitted to obtain the chromaticity curve corresponding to the target color temperature value.
在上述各实施例的基础上，作为一种可选的实施例，所述标准gamma值和标准色温值，在显示器出厂前预先设定的。On the basis of the above embodiments, as an optional embodiment, the standard gamma value and the standard color temperature value are preset before the display leaves the factory.
在上述各实施例的基础上，作为一种可选的实施例，所述标准gamma值取值为1；On the basis of the above embodiments, as an optional embodiment, the standard gamma value is 1;
所述标准色温值为7500K-9300K之间的一个数值。The standard color temperature value is a value between 7500K-9300K.
在上述各实施例的基础上，作为一种可选的实施例，所述显示器屏幕的gamma曲线和色温曲线，是利用色温仪测量得到的；On the basis of the above-mentioned embodiments, as an optional embodiment, the gamma curve and the color temperature curve of the display screen are obtained by measuring with a color temperature meter;
所述目标gamma值和目标色温值，是由终端用户给定的。The target gamma value and target color temperature value are given by the end user.
第三方面，图5示例了一种电子设备的实体结构示意图，如图5所示，该电子设备可以包括：处理器(processor)510、通信接口(Communications Interface)520、存储器(memory)530和通信总线540，其中，处理器510，通信接口520，存储器530通过通信总线540完成相互间的通信。处理器510可以调用存储器530中的逻辑指令，以执行显示器的显示校正方法，该方法包括：获取目标gamma值和目标色温值；基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。In a third aspect, FIG. 5 illustrates a schematic diagram of the physical structure of an electronic device. As shown in FIG. 5, the electronic device may include: a processor (processor) 510, a communication interface (Communications Interface) 520, a memory (memory) 530 and The
此外，上述的存储器530中的逻辑指令可以通过软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本发明的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本发明各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、磁碟或者光盘等各种可以存储程序代码的介质。In addition, the above logic instructions in the
第四方面，本发明还提供一种非暂态计算机可读存储介质，其上存储有计算机程序，该计算机程序被处理器执行时实现以执行上述各实施例提供的显示器的显示校正方法，该方法包括：获取目标gamma值和目标色温值；基于所述目标gamma值、所述目标色温值、显示器标准gamma曲线和显示器标准色度曲线，对显示器进行显示校正；其中，所述显示器标准gamma曲线和所述显示器标准色度曲线，是预先基于标准gamma值和标准色温值，对显示器屏幕的gamma曲线和色度曲线进行同步校正得到的。In a fourth aspect, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it is implemented to execute the display calibration method provided by the above-mentioned embodiments. The method includes: acquiring a target gamma value and a target color temperature value; performing display calibration on the display based on the target gamma value, the target color temperature value, a display standard gamma curve, and a display standard chromaticity curve; wherein, the display standard gamma curve The standard chromaticity curve of the display is obtained by synchronously correcting the gamma curve and the chromaticity curve of the display screen based on the standard gamma value and the standard color temperature value in advance.
以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。本领域普通技术人员在不付出创造性的劳动的情况下，即可以理解并实施。The device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in One place, or it can be distributed to multiple network elements. Part or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment. It can be understood and implemented by those skilled in the art without any creative effort.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到各实施方式可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件。基于这样的理解，上述技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在计算机可读存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行各个实施例或者实施例的某些部分所述的方法。Through the above description of the implementations, those skilled in the art can clearly understand that each implementation can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware. Based on this understanding, the essence of the above technical solution or the part that contributes to the prior art can be embodied in the form of software products, and the computer software products can be stored in computer-readable storage media, such as ROM/RAM, magnetic discs, optical discs, etc., including several instructions to make a computer device (which may be a personal computer, server, or network device, etc.) execute the methods described in various embodiments or some parts of the embodiments.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
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