KR20180136813A - Operating method of optical detector for measuring quality of display and apparatus for editing the measurement point - Google Patents

Abstract

Provided are a method for operating an optical detector for measuring the display quality and a measurement point management apparatus which align a measurement position by using a measurement point file. The method for operating, by at least one processor, an optical detector for measuring the display quality comprises the steps of: receiving a point file including each position value of a plurality of measurement points positioned at different points on a display screen; receiving a screen size of a measurement target display; calculating the position value as each position value corresponding to the screen size; and measuring a measurement point corresponding to each of the calculated position values. The point file can be previously generated for a display having a specific screen size.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an optical measuring apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0002] The present invention relates to a method of operating an optical measuring instrument and a measuring point management apparatus for measuring display quality, and more particularly, to a technique for measuring optical characteristics of an image displayed on a display panel.

The present invention has been derived from the research carried out as part of the Giga KOREA project of the Ministry of the Future Creation Sciences [assignment number: GK16C0200, project title: development of mobile full stereoscopic terminal and contents technology].

With the commercialization of 4K Ultra High Definition (UHD), consumers are constantly exposed to high quality video and demand for high resolution is increasing in mobile environment. 3D stereoscopic image technology is also increasingly demanding the market to realize full stereoscopic image in mobile environment.

LF (Light Field) is a field for expressing intensity and direction of light reflected on a subject in a three-dimensional space, and can view high-quality realistic images without visual distortion. The 3D multi-view display is a technology that focuses the binocular parallax and the focus of the eyes to the correct depth by projecting several view images at the same time by tightly spacing the viewpoints.

In the non-eyeglass system, there are items of adjustment (accomodation) and crosstalk as important factors of human factor. From a human cognitive point of view, crosstalk is an obstacle to stereoscopic recognition.

When the angle exceeds a certain angle, there is a problem that an image seen in the left eye is displayed in the right eye and an image in the right eye appears in the left eye, causing dizziness or headache.

In addition to the general optical measurement, ultra-high resolution light field display products require alignment of measurement positions for measurement of crosstalk which is an important measurement item. It is essential to make measurements with a detector through securing the maximum luminous intensity position of each view and accurate positional movement.

However, conventionally, at the time of measurement, the measurer has to manually input the measurement position manually.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide an interface by which a user can edit a measurement point for measuring optical characteristics of a display and to open a measurement position using a measurement point file generated based on information input through an interface An operation method of an optical measuring instrument and an apparatus for managing measurement points.

According to one aspect of the present invention, an operating method of a light meter is an operating method of a light meter that is operated by at least one processor and measures display quality, the method comprising the steps of: Receiving a point file including each position value, receiving a screen size of a display to be measured, calculating each position value corresponding to the screen size, and calculating each calculated position value And the point file is generated in advance for a display having a specific screen size.

Wherein the point file is generated for each of a plurality of measurement items, and the calculating step comprises: extracting a point file corresponding to the inputted measurement item; and extracting each position value included in the extracted point file, With a position value corresponding to the position information.

The position value may include at least one of a relative ratio information (Rate) of the horizontal and vertical sizes of the display screen, a relative position value (Fomula) of the display screen, and an absolute position value (mm) Can be set in one manner.

The point file can be used so that the light meter is installed to face each measurement point and perform measurements.

According to another aspect of the present invention, a measurement point management apparatus includes a memory for storing a program for providing an editing environment capable of setting, modifying, and storing a plurality of measurement points, and providing a user interface And a processor for executing the program, wherein the program is configured to set the number of measurement points and the position of the measurement point on the screen for each measurement item, and generate at least one point file including the set plurality of measurement point information And outputs the at least one point file to the optical instrument, and the point file output to the optical instrument is used to align the position for the optical instrument to measure the measurement point.

The user interface includes a first item as an area for displaying a set measurement point on a display screen, a second item for setting a name of a point file, a third item for inputting or setting a position value for each set measurement point A fourth item in which a position value of each of a plurality of measurement points set on the display screen is listed, and a fifth item in which at least one point file including a position value of each of the plurality of measurement points is listed .

The position value may be displayed as a ratio occupying the screen based on the horizontal length and the vertical length of the display screen.

The position value may be expressed by a formula using at least one of a horizontal length and a vertical length of the display screen and addition, subtraction, division, and multiplication.

The position value may be expressed as a calculated length value by calculating a length in a horizontal direction or a vertical direction with a specific point on the display screen as a reference point.

Wherein the program selects a point file according to a measurement standard and a measurement item input from the optical instrument among a plurality of previously stored point files and inputs a position value of each of a plurality of measurement points included in the point file from the optical measuring instrument And the calculated position values can be output to the optical measuring instrument.

According to the embodiment of the present invention, it is possible to provide an interface by which a user can edit measurement points having differently defined positions for measurement specifications and measurement items, or measuring points for which a user specifies an arbitrary position according to measurement needs, Measurement point setting is easy.

1 shows a display quality measurement system according to an embodiment of the present invention.
2 is a view for explaining a measuring operation of the optical measuring instrument according to an embodiment of the present invention.
3 is a view for explaining a measuring operation of the optical measuring instrument according to another embodiment of the present invention.
4 is a diagram illustrating an example of setting a position value of a measurement point according to an embodiment of the present invention.
5 is a diagram illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention.
6 is a diagram illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention.
7 is a diagram illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention.
8 is a diagram illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention.
9 is a diagram illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention.
10 illustrates a user interface for editing a measurement point according to an embodiment of the present invention.
11 is a diagram illustrating an example of position value calculation according to an embodiment of the present invention.
12 is a flowchart showing an operation method of the optical measuring instrument according to the embodiment of the present invention.
13 is a flowchart illustrating a method of setting a measurement point according to an embodiment of the present invention.
14 is a hardware block diagram of a measurement point management apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Also, the terms " part, "" ... "," module ", and the like described in the specification mean a unit for processing at least one function or operation and may be implemented by hardware or software or a combination of hardware and software .

Now, an operation method and an apparatus for managing a measurement point of a light meter for measuring display quality according to an embodiment of the present invention will be described with reference to the drawings.

2 is a view for explaining a measurement operation of a light measuring instrument according to an embodiment of the present invention, and Fig. 3 is a view for explaining a display quality measuring system according to another embodiment of the present invention 4 is a view illustrating an example of setting a position value of a measurement point according to an embodiment of the present invention, and FIG. 5 is a view illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention. 6 is a view illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention. FIG. 7 is a view illustrating an example of setting a position value of a measurement point according to another embodiment of the present invention. 8 is an exemplary view of setting a position value of a measurement point according to another embodiment of the present invention, and FIG. 9 is an exemplary diagram illustrating a position value setting of a measurement point according to another exemplary embodiment of the present invention.

Referring to FIG. 1, a display quality measurement system includes a measurement pattern image supply device 100, a display device 200, a light meter 300, and a measurement point management device 400.

The measurement pattern image supply device 100 generates a measurement pattern image signal for measuring the optical characteristics of the display device 200 and outputs the measurement pattern image signal to the display device 200. Measurement pattern measurement pattern image supply apparatus 100 and display apparatus 200 can perform wired communication or wireless communication.

The display device 200 displays a measurement pattern image input from the measurement pattern image supply device 100 on the screen.

The optical measuring instrument 300 is installed to face each of a plurality of measurement points set in the display device 200. The optical measuring instrument 300 receives a plurality of measurement points from the measurement point management apparatus 400 and recognizes a plurality of measurement points set in the display apparatus 200. The optical measuring instrument 300 can perform wired communication or wireless communication for data input / output with the measurement point management device 400.

Referring to FIG. 2, a light meter 300 is installed to face each of a plurality of measurement points. The light meter 300 may be installed to be horizontal with each measurement point. The optical measuring instrument 300 can move to a position facing each of the plurality of measurement points and perform measurement at the moved position. At this time, the movement order may be in accordance with the measurement sequence set at the measurement point.

Referring to FIG. 3, the optical measuring instrument 300 is set to have a predetermined angle difference in the horizontal and / or vertical directions with respect to each measurement point in a state where it is installed at an arbitrary position, and can perform measurement at a set position .

Referring again to FIG. 1, the optical measuring device 300 photographs a measurement pattern image displayed on the display device 200, and analyzes the captured measurement pattern image to detect optical characteristics. For example, the image quality can be evaluated by detecting the luminance characteristic and detecting the number of waves of the measurement pattern and the modulation transfer function (MTF) as the wave modulation ratio from the luminance characteristic. At this time, the optical measuring device 300 may detect only the optical characteristic, and the analysis such as the image quality evaluation may be performed by a separate analyzer.

The measurement point management apparatus 400 generates a plurality of measurement point information based on the information input by the user. The measurement items may be set to be similar or different from each other according to the measurement standard, and the number and position of the measurement points may be set differently for each measurement item.

The measurement standards include Information Display Measurements Standard (IDMS), The Swedish Confederation Of Professional Employees (TCO), and China Quality Certification Center (CQC). The IDMS is an international guide for measuring and evaluating the image quality of a display. The IDMS is a device for measuring luminance and contrast ratio of a display (a display device such as an LCD, an LED, a PDP, and an OLED), a contrast ratio, ) Reaction curve, black brightness, reflectance of the panel surface, and the like. In recent TCO 03 fermented, it is required that? U'v 'should be within 0.02 at a gradation of 105 or higher gray level so that even if the brightness level changes, the high color integrity of the display device can be satisfied. CQC is a new enforcement regulation for compulsory safety certification (CCC) for obiovideo devices and information and communication devices.

The Measuring Item can be classified into Luminance, Average Luminance, LuminousNon-uniformity, Interocular Luminance Difference, Dark-Room Contrast Ratio, And may be a color gamut, a white chromaticity, a white chromatic uniformity, an interocular chromaticity or a gamma value.

The plurality of measurement point information is constituted by a point file. That is, one point file includes n indices, at least one position type, and n position values. The index represents the measurement order of the optical measuring instrument 300. For example, optical metrology 300 may move to a measurement point with index 1, or after it has been installed, perform measurements and then move to a measurement point with index 2 or installed to perform measurements. The position type indicates the type of the position value, according to one embodiment, the position value can be expressed in a rate manner. According to another embodiment, the position value may be expressed in a Fomula manner. According to another embodiment, the position value can be expressed in the millimeter (mm) manner.

FIG. 4 is a diagram illustrating an example of setting a measurement point according to an embodiment of the present invention. FIG. 4 illustrates an example of setting a TCO luminance uniformity measurement point. At this time, the ratio method is a method in which the relative position of the measurement point is expressed by a specific ratio value (%).

4 (a), five measurement points (①, ②, ③, ④, ⑤) are displayed on the screen of the display. The five measurement points are arranged at different positions on the screen. Thus, each measurement point has its own position value.

Referring to FIG. 4 (b), the position values of the five measurement points are shown in a proportional manner. At this time, the width of the display screen is W, and the height of the display screen is H. This position value is set as shown in Fig. 4 (c).

Referring to (c) of Fig. 4, the measuring point position of (①, P _T) is 50, 10, and a position of the measuring point (②, P _L) are 10, 50 and the measuring point (③, P _C ) is 50, 50, the position values of the measurement points (4, P _R ) are 90, 50, and the positions of the measurement points (5, P _B ) are set at 50, 90.

FIG. 5 is a diagram illustrating an example of setting a measurement point according to another embodiment of the present invention, and is an example of setting a luminance uniformity measurement point of an IDMS / 3D (Dimensional) measurement standard, and a position value is expressed by a formula method. The formula method is a method of expressing the relative position of the measurement points calculated using the subtraction formula using addition (+), subtraction (-), multiplication (X), and division (/).

5 (a), nine measurement points (①, ②, ③, ④, ⑤, ⑥, ⑦, ⑧, ⑨) are displayed on the screen of the display. Referring to FIG. 5 (b), the position value setting of nine measurement points is shown. At this time, the horizontal length of the display screen is H, the vertical length is V, and the position value is set by a formula method as shown in Fig. 5 (c).

5 (c), the position values of the measurement point (1) are H / 10 and V / 10, and the position values of the measurement point (3) do.

FIG. 6 is a diagram illustrating an example of setting a measurement point according to another embodiment of the present invention, and is an example of setting a latitude contrast measurement point of CQC, and a position value is expressed by a formula method.

6 (a), five measurement points (①, ②, ③, ④, ⑤) are displayed on the screen of the display. Referring to FIG. 6 (b), the position value setting of five measurement points is shown.

At this time, the horizontal length of the display screen is H, the vertical length is V, and a position value is set by a formula method as shown in (c) of FIG.

FIG. 7 is a diagram illustrating a measurement point setting example according to another embodiment of the present invention, which is an example of setting a 135 point measurement position, and a position value is expressed by a formula method.

Referring to FIG. 7A, 135 measurement points are displayed on the screen of the display, and a position value is set by a formula method as shown in FIG. 7B. At this time, the horizontal length of the display screen is H, and the vertical length is V. [

Referring to FIG. 7B, the position value of the measurement point (1) is set to 2, 2 + ((v-4) / 14).

FIG. 8 is a diagram illustrating an example of setting a measurement point according to another embodiment of the present invention, and is an example of setting a light leakage 84 measurement point.

At this time, the position value is represented by a combination of the millimeter (mm) method and the ratio method. The millimeter method represents the absolute position of the measurement point with respect to the upper left corner.

)가 표시되어 있고, 도 8의 (b)와 같이, 밀리미터 방식 및 비율 방식으로 설정되었다. 밀리미터 방식의 경우, 좌측 모서리를 기준점으로 ① 측정 포인트의 위치값은 3.535334, 3.535334으로 설정된다. 8 (a), 84 measurement points (1, ...,

) Are displayed. As shown in Fig. 8 (b), the millimeter method and the ratio method are set. In the case of the millimeter method, the position value of the measurement point is set to 3.535334 and 3.535334 with the left corner as a reference point.

FIG. 9 is a diagram illustrating an example of a measurement point setting according to another embodiment of the present invention, and is an example of setting the measurement points of Dell's crosstalk 12.

Referring to FIG. 9A, twelve measurement points are displayed on the screen of the display, and the ratio method and the formula method are mixedly displayed as shown in FIG. 9B. At this time, the horizontal length of the display screen is H, and the vertical length is V. [

Referring to FIG. 9 (b), the position value of the measurement point (1) is set to 50, 3 * v / 12.

According to the above description, if the measurement point is?, The measurement is first performed by the optical measuring instrument 300.

Such a measurement point is set by the measurement point management apparatus 400 and provided to the optical measurement apparatus 300. [ The measurement point management device 400 provides an editing environment for setting, modifying, and storing a plurality of measurement points, and provides a user interface that can be displayed and displayed on a display screen. Such a user interface can be implemented in the form of a program executed in a computer device. The program may be an application installed in a computer operating system or a web-based application.

10 illustrates a user interface for editing a measurement point according to an embodiment of the present invention.

10, the user interface 500 includes a screen item 501, a point name item 503, a position type item 505, a nickname item 507, a position value display item 509, 511).

The screen item 501 is an area for displaying measurement points set in accordance with measurement specifications and measurement items on the display screen.

The point name item 503 is an item for the user to input the name of the measurement point.

The position type item 505 is an item for the user to select the position value type of the measurement point, and is selected from a ratio method, a formula method, and a millimeter method. At this time, it is also possible to select a different position value method for each measurement point.

The nickname item 507 is a nickname input item that the user can additionally set in addition to the name of the measurement point.

The position value display item 509 lists the index of each measurement point displayed in the screen item 501, the position value type, and the position value. The user can change the order of the measurement points by selecting the Up item and the Down item, and select the Delete item to delete the corresponding measurement point. For example, the order of the measurement points with position values 10 and 10 is set to 1, but you can change the order 2 by selecting the Down item.

The point list item 511 includes a plurality of point information items set through the screen item 501, the point name item 503, the position type item 505, the nickname item 507, and the position value display item 509 List at least one point file. For example, it lists 135Point files, 13 Point files, 25Points-uni files, and so on.

The user can click the New button to create a new point file. When the New button is clicked, a screen item 501, a point name item 503, a position type item 505, a nickname item 507, and a position value display item 509 are displayed as blank spaces, 501, 503, 505, and 507, the position value display item 509 is generated. The user can click the Save button to save a point file composed of the information input or displayed in each item 501, 503, 505, 507, Also, the user can delete the corresponding point file by clicking the Delete button.

As described above, the measurement point management apparatus 400 sets a plurality of measurement points based on information previously input or selected by the user, and generates and stores at least one point file including a plurality of measurement points. And outputs a point file corresponding to the optical measuring instrument 300 at the time of measurement.

At this time, the size of the display screen may vary depending on the model. If the size of the display screen is changed, the corresponding position value may be set differently.

11 is a diagram illustrating an example of position value calculation according to an embodiment of the present invention.

Referring to FIG. 11A, a reference screen having a measurement point set through a user interface (500 in FIG. 10) has a horizontal length H1 and a vertical length V1.

Referring to FIG. 11 (b), a display screen which is a measurement target has a horizontal length of H2 and a vertical length of V2.

11 (a), the position values of the second measurement point (2) are set to H1 / 2 and V1 / 10. However, if the size of the display screen is changed as shown in FIG. 11 (b), the arrangement position occupied in the entire screen is similar to that of FIG. 11 (a), but the actual position value is different. When the second measurement point (2) is taken as an example, it is set to H2 / 2 and V2 / 10 when it is set as the ratio method.

11 (a), the position of the second measurement point (2) is a1 and b1, while in the case of the millimeter wave method, the reference point is the left edge, The position values of the point (2) are a2 and b2. Since the formula method is based on the horizontal length and the vertical length of the display screen, the position value varies depending on the screen size.

Therefore, the position value of the measurement point generated in advance through the user interface (500 in Fig. 10) is converted into the size of the display screen to be measured.

FIG. 12 is a flowchart showing an operation method of the optical measuring instrument according to the embodiment of the present invention, and shows a series of operations of the configuration described with reference to FIGS. 1 to 11. FIG.

12, the optical measuring instrument 300 receives model information, a measurement standard, and a measurement item of a measurement target apparatus, that is, a display apparatus 200, from a user (S101). Also, at least one point files created and stored in advance from the measurement point management device 400 are input.

The optical measuring instrument 300 selects a point file according to the measurement standard and the measurement item, and converts the position value of each of the plurality of measurement points included in the point file to the model information received in operation S101 (S105). The conversion method is as described in Fig. At this time, if the model information is known, the size of the display screen can be known. The model information and the screen size information may be directly input by the user to the optical measuring instrument 300 or stored in the optical measuring instrument 300 or the measuring point managing device 400 in advance.

Here, although it has been described that the optical measuring instrument 300 performs the step S105, the measuring point managing apparatus 400 receives the information inputted in the step S101 from the optical measuring instrument 300, calculates the position value, And may output the position value to the optical measuring device 300. [

The optical measuring instrument 300 measures the optical characteristic of the measurement point corresponding to the position value converted in step S105 (S107) according to the measurement order defined in the point file.

FIG. 13 is a flowchart of a method of setting a measurement point according to an embodiment of the present invention, and shows a series of operations of the configuration described with reference to FIGS. 1 to 11. FIG.

Referring to FIG. 13, the measurement point management apparatus 400 provides a user interface 500 as described with reference to FIG. 10 (S201). The measurement point management apparatus 400 generates and stores a point file based on the information set by the user (S203) through each item of the user interface 500 (S205).

As described above, conventionally, the measurement point has to be set manually every time the measurement is performed. However, in the embodiment of the present invention, since the point file previously set by the user can be used through the user interface 500, And the measurement environment are improved.

14 is a hardware block diagram of a measurement point management apparatus according to an embodiment of the present invention.

14, the measurement point management apparatus 400 includes hardware including a memory 601, a storage device 603, a communication device 605, and a processor 607, And a program to be executed is stored. The hardware has a configuration and performance capable of executing the method of the present invention. The program includes instructions implementing the method of operation of the present invention described with reference to FIGS. 1 through 13 and is implemented in combination with hardware such as memory 601 and processor 607 to implement the present invention.

The embodiments of the present invention described above are not implemented only by the apparatus and method, but may be implemented through a program for realizing the function corresponding to the configuration of the embodiment of the present invention or a recording medium on which the program is recorded.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (10)

CLAIMS What is claimed is: 1. An operating method of a light meter that is operated by at least one processor and measures display quality,
Receiving a point file including position values of a plurality of measurement points disposed at different points on a display screen,
Receiving a screen size of a measurement target display,
Calculating the position value as a position value corresponding to the screen size, and
And performing a measurement on a measurement point corresponding to each calculated position value,
The point-
Wherein the display is generated in advance for a display having a specific screen size. The method of claim 1,
The point file is generated for each of a plurality of measurement items,
Wherein the calculating comprises:
Extracting a point file corresponding to the inputted measurement item, and
Calculating each position value included in the extracted point file as a position value corresponding to the screen size
Gt; a < / RTI > The method of claim 1,
The position value,
A relative position information value (Rate) of the horizontal and vertical sizes of the display screen, a relative position value (Fomula) of the display screen, and an absolute position value (mm) The method comprising the steps of: The method of claim 1,
The point-
Wherein the light meter is installed to face each measurement point to perform a measurement. A memory for storing a program for providing an editing environment capable of setting, modifying, and storing a plurality of measurement points, and providing a user interface that can be confirmed by being displayed on a display screen;
And a processor for executing the program,
The program includes:
Wherein the at least one point file is generated and stored in the at least one point file including at least one point file including a plurality of measurement point information set therein, ,
The point file output to the optical measuring instrument includes:
Wherein the light meter is used to align a position for measuring a measurement point. The method of claim 5,
Wherein the user interface comprises:
A first item as an area for displaying the set measurement point on the display screen,
A second item for setting the name of the point file,
A third item for inputting or setting each position value for each set measurement point,
A fourth item in which a position value of each of a plurality of measurement points set on the display screen is listed, and
A fifth item in which at least one point file including the position value of each of the plurality of measurement points is listed
And the measurement point management device. The method of claim 6,
The position value,
Wherein the display is displayed in a ratio occupied in the screen based on the horizontal length and the vertical length of the display screen. The method of claim 6,
The position value,
Wherein the display screen is represented by a formula using at least one of a horizontal length and a vertical length of the display screen and addition, subtraction, division, and multiplication. The method of claim 6,
The position value,
And calculating a length in a horizontal direction or a vertical direction with a specific point on the display screen as a reference point, and is displayed as a calculated length value. The method of claim 6,
The program includes:
Selecting a point file according to a measurement standard and a measurement item input from the optical measuring instrument among a plurality of previously stored point files,
Calculating a position value of each of a plurality of measurement points included in the point file as a position value corresponding to a size of a measurement target display screen input from the optical measuring instrument and outputting each calculated position value to the optical measuring instrument, Point management device.

Images