Visibility evaluation system

Abstract

To evaluate visibility of an emblem in a peripheral visual field of a subject.SOLUTION: A visibility evaluation system 1 includes a visual line detection device 10 and an information processing device 20. The information processing device 20 includes a display unit 24 and a control unit 25. The control unit 25 determines a correct answer rate which is a proportion of subject's correct recognition of a target emblem based on a result of a visibility test, acquires, from the visual line detection device 10, information about a position of a central visual field of the subject in the display unit 24 when the visibility test is executed, and if there is a portion in which the target emblem and the central visual field overlap, determines that the subject has seen the target emblem in the central visual field, and if there is no portion in which the target emblem and the central visual field overlap, determines that the subject has seen the target emblem in a peripheral visual field, and calculates the correct answer rate separately for the case in which the subject has seen the target emblem in the central visual field and for the case in which the subject has seen the target emblem in the peripheral visual field.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a visibility evaluation system.

Background Art

[0002] Conventionally, marks such as corporate brand logos are often attached to signboards and product packages. In this specification, the term "mark" shall mean a combination of designed characters, figures, symbols, colors, etc.

[0003] If the visibility of a mark is high, the images of a company, brand, product, etc. can be effectively appealed to consumers. Also, if the visibility of a mark is high, it becomes easier for consumers to pay attention to the mark, and as a result, it is possible to promote the purchase of products and the use of services. Therefore, it is desirable to be able to accurately evaluate the visibility of a mark.

[0004] As a method for evaluating the visibility of a mark, there is, for example, a questionnaire survey.

[0005] Also, as a method for evaluating the visibility of a mark, a method using user gaze analysis is also conceivable. For example, Patent Document 1 discloses a degree-of-interest estimation device that detects the gaze direction of a user and estimates the degree of interest of the user in a video displayed on a screen based on the detected gaze direction.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0007] The evaluation of the visibility of a trademark by means of a questionnaire survey is merely a subjective evaluation by the subjects. In addition, when evaluating the visibility of a trademark by means of a questionnaire survey, there is a problem that the evaluations vary depending on differences in criteria for each subject, the mood and physical condition of the subjects, etc. Further, in order to quantitatively evaluate the visibility, it is necessary to conduct a questionnaire survey on a large number of subjects.

[0008] In addition, the method using eye movement analysis usually evaluates only what the subject is looking at in the central visual field. That is, it is an evaluation that reflects only the explicit consciousness of the subject. Therefore, when the subject sees a trademark in the peripheral visual field and potentially recognizes the trademark, the visibility of the trademark cannot be evaluated.

[0009] An object of the present invention made in view of such a point is to provide a visibility evaluation system capable of evaluating the visibility of a trademark in the peripheral visual field of a subject.

Means for Solving the Problem

[0010] A visibility evaluation system according to an embodiment of the present invention is a visibility evaluation system including an eye movement detection device that detects the line-of-sight direction of a subject and an information processing device, wherein the information processing device includes a display unit and a control unit that executes a visibility test for causing a plurality of trademarks to be displayed on the display unit and causing the subject to answer, wherein the control unit determines a correct answer rate, which is the ratio of the target trademark, which is the trademark to be evaluated for visibility, correctly recognized by the subject, based on the result of the visibility test, acquires information on the position of the central visual field of the subject on the display unit when the visibility test is being executed, from the eye movement detection device, If there is an overlapping part between the target mark and the central visual field, it is determined that the subject was looking at the target mark in the central visual field. If there is no overlapping part between the target mark and the central visual field, it is determined that the subject was looking at the target mark in the peripheral visual field. The correct answer rate is calculated separately for the case where the subject is looking at the target mark in the central visual field and the case where the subject is looking at the target mark in the peripheral visual field.

[0011] Also, in the visibility evaluation system according to an embodiment of the present invention, In the visibility test, the control unit detects the response time from when the plurality of marks are displayed on the display unit until the subject answers. The average value of the response time may be calculated separately for the case where the subject is looking at the target mark in the central visual field and the case where the subject is looking at the target mark in the peripheral visual field.

[0012] Also, in the visibility evaluation system according to an embodiment of the present invention, When executing the visibility test, the control unit may display a fixation point on the display unit and then simultaneously display the plurality of marks at positions that do not overlap with the fixation point.

[0013] Also, in the visibility evaluation system according to an embodiment of the present invention, The visibility test may be a test including any one of a Go / No-go task, an oddball task, and an N-back task.

Advantages of the Invention

[0014] According to the present invention, it is possible to provide a visibility evaluation system capable of evaluating the visibility of a mark in the peripheral visual field of a subject.

Brief Description of the Drawings

[0015]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Mode for Carrying Out the Invention

[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0017] FIG. 1 is a diagram showing a configuration example of a visibility evaluation system 1 according to an embodiment of the present invention. The visibility evaluation system 1 is a system capable of evaluating the visibility of a logo.

[0018] The visibility evaluation system 1 includes a gaze detection device 10 and an information processing device 20.

[0019] The gaze detection device 10 and the information processing device 20 can communicate with each other. The gaze detection device 10 and the information processing device 20 may communicate by wired communication or wireless communication.

[0020] The gaze detection device 10 is a device capable of detecting the gaze direction of a subject. The gaze detection device 10 may be, for example, a device that irradiates near-infrared light onto the pupil of the subject and detects the reflected light reflected by the pupil to detect the gaze direction of the subject. The gaze detection device 10 is not limited to a device using near-infrared light and may be a device having any configuration capable of detecting the gaze direction of the subject.

[0021] The gaze detection device 10 is installed near the information processing device 20 so as to be able to detect the gaze direction of the subject operating the information processing device 20.

[0022] The information processing device 20 may be a dedicated computer used in the visibility evaluation system 1 or a general-purpose PC (Personal Computer).

[0023] Referring to FIG. 2, the configuration of the information processing device 20 will be described.

[0024] The information processing device 20 includes a communication unit 21, a storage unit 22, an input unit 23, a display unit 24, and a control unit 25.

[0025] The communication unit 21 includes a communication module. For example, the communication unit 21 may include a communication module corresponding to a LAN (Local Area Network). The information processing apparatus 20 is connected to a network such as the Internet via the communication unit 21. The communication unit 21 transmits and receives various information via the network. The communication unit 21 may communicate with the line-of-sight detection device 10 via the network, or may communicate directly with the line-of-sight detection device 10.

[0026] The storage unit 22 is, for example, a semiconductor memory, a magnetic memory, an optical memory, etc., but is not limited thereto. The storage unit 22 may function as, for example, a main storage device, an auxiliary storage device, or a cache memory. The storage unit 22 stores any information used for the operation of the information processing apparatus 20. For example, the storage unit 22 may store a system program, an application program, and various information received by the communication unit 21. The information stored in the storage unit 22 may be updated, for example, with information received via the communication unit 21.

[0027] The input unit 23 includes one or more input interfaces that detect user input and acquire input information based on the user's operation. For example, the input unit 23 includes, but is not limited to, a keyboard, a mouse, a touch screen provided integrally with the display of the display unit 24, or a microphone that accepts voice input.

[0028] The display unit 24 includes one or more output interfaces that output information and notify the user. For example, the display unit 24 includes a display that outputs information as an image. The display may be a liquid crystal display or an organic EL (Electro Luminescence) display, etc.

[0029] The control unit 25 includes at least one processor, at least one dedicated circuit, or a combination thereof. The processor is a general-purpose processor such as a CPU (Central Processing Unit) or a GPU (Graphics Processing Unit), or a dedicated processor specialized for specific processing. The dedicated circuit is, for example, an FPGA (Field-Programmable Gate Array) or an ASIC (Application Specific Integrated Circuit). While controlling each part of the information processing apparatus 20, the control unit 25 executes processing related to the operation of the information processing apparatus 20.

[0030] Subsequently, the operation of the visibility evaluation system 1 will be described.

[0031] The control unit 25 of the information processing apparatus 20 conducts a visibility test on the subject. The visibility test is a test for evaluating the visibility of a mark that is the object of visibility evaluation. Hereinafter, the mark that is the object of visibility evaluation may be described as the "target mark" in some cases.

[0032] When conducting the visibility test, the control unit 25 causes the display unit 24 to display a plurality of marks and asks the subject to answer whether the target mark is present or not.

[0033] How the subject answers after looking at the plurality of marks displayed on the display unit 24 differs depending on the type of visibility test. The visibility test may be a test including any one of, for example, a Go / No-go task, an oddball task, and an N-back task. The visibility test is not limited to tests including these tasks and may be a test including tasks other than the Go / No-go task, the oddball task, and the N-back task.

[0034] First, the case where the visibility test is a Go / No-go task will be described as an example. The Go / No-go task is a task for measuring the suppression function.

[0035] When the visibility test starts, the control unit 25 causes the display unit 24 to display a fixation point. The control unit 25 may, for example, display the fixation point near the center of the display unit 24. FIG. 3 shows an example of a state where the display unit 24 is displaying the fixation point 101 near the center. In FIG. 3, the case where the fixation point 101 is in the shape of a black cross is shown, but the fixation point 101 may be in any shape.

[0036] In this way, by having the control unit 25 display the fixation point 101 on the display unit 24, the subject's line of sight can be directed to the fixation point 101.

[0037] After displaying the fixation point 101, the control unit 25 simultaneously displays a plurality of signs at positions that do not overlap with the fixation point. When simultaneously displaying a plurality of signs, the control unit 25 erases the display of the fixation point 101 and then simultaneously displays the plurality of signs.

[0038] FIGS. 4 and 5 show an example of a state where the display unit 24 is displaying a plurality of signs. In the example shown in FIG. 4, the display unit 24 is displaying sign A, sign B, sign C, and sign D. In the example shown in FIG. 5, the display unit 24 is displaying sign E, sign F, sign G, and sign H.

[0039] For example, when the target sign, which is the sign to be evaluated for visibility, is sign D, FIG. 4 is a display screen when the target sign is being displayed. Also, FIG. 5 is a display screen when the target sign is not being displayed.

[0040] Note that in FIGS. 4 and 5, an example where the control unit 25 displays four signs on the display unit 24 is shown, but this is just an example. The number of signs that the control unit 25 displays on the display unit 24 may be any number of two or more.

[0041] The control unit 25 alternately repeats the operation of displaying the fixation point and the operation of displaying a plurality of logos. For example, as shown in FIG. 3, after the control unit 25 displays the fixation point 101, it displays the screen shown in FIG. 4, and then, again after displaying the fixation point 101 as shown in FIG. 3, it displays the screen shown in FIG. 5. The control unit 25 may repeat such an operation a predetermined number of times. The predetermined number of times may be, for example, about several tens to several hundreds of times.

[0042] When the visibility test is a Go / No-go task, the subject does not press the button when viewing a display screen including the target logo, and presses the button when viewing a display screen not including the target logo. The subject may perform the operation of pressing the button by operating the input unit 23 of the information processing apparatus 20. For example, the subject may perform the operation of pressing the button by pressing a predetermined button on the keyboard included in the input unit 23.

[0043] For example, since FIG. 4 is a display screen showing the target logo, for the display screen shown in FIG. 4, it is a correct answer if the subject does not press the button, and it is an incorrect answer if the subject presses the button. Also, for example, since FIG. 5 is a display screen not showing the target logo, for the display screen shown in FIG. 5, it is a correct answer if the subject presses the button, and it is an incorrect answer if the subject does not press the button.

[0044] Based on the subject's response to the visibility test in which the control unit 25 repeats the operation of displaying a plurality of logos, the control unit 25 calculates the correct answer rate, which is the ratio at which the subject correctly recognizes the target logo.

[0045] On the other hand, when the control unit 25 is executing the visibility test, the gaze detection device 10 detects the gaze direction of the subject undergoing the visibility test.

[0046] The line-of-sight detection device 10 grasps the positional relationship between the line-of-sight detection device 10 and the information processing device 20. Therefore, based on the detected line-of-sight direction of the subject and the positional relationship between the line-of-sight detection device 10 and the information processing device 20, the line-of-sight detection device 10 can calculate where the position of the central visual field of the subject is on the display unit 24.

[0047] The line-of-sight detection device 10 can set the range of the central visual field as a range with a visual angle of a predetermined angle. The predetermined angle may be, for example, any angle between 1 degree and 5 degrees. For example, if the range of the central visual field is set as a range with a visual angle of 1 degree, this range corresponds to a part called the foveola on the retina. The foveola is a part where only cone cells, which are good at distinguishing colors and shapes, exist. For example, if the range of the central visual field is set as a range with a visual angle of 5 degrees, this range corresponds to a part called the fovea on the retina. The fovea has many cone cells, but there are also rod cells, which are sensitive to brightness, mixed to a certain extent.

[0048] The line-of-sight detection device 10 transmits information on the position of the central visual field of the subject on the display unit 24 to the information processing device 20.

[0049] The control unit 25 of the information processing device 20 acquires information on the position of the central visual field of the subject on the display unit 24 when the visibility test is being executed, from the line-of-sight detection device 10.

[0050] The control unit 25 determines whether there is an overlapping part between the target mark and the central visual field, regarding the position of the target mark when the target mark is displayed on the display unit 24 in the visibility test and the position of the central visual field of the subject at that time.

[0051] When there is an overlapping part between the target mark and the central visual field, the control unit 25 determines that the subject is looking at the target mark with the central visual field. Also, when there is no overlapping part between the target mark and the central visual field, the control unit 25 determines that the subject is looking at the target mark with the peripheral visual field.

[0052] FIG. 6 shows an example of a display screen when there is no overlapping portion between the target mark and the central visual field. In the example shown in FIG. 6, assume that the target mark is mark D. Referring to FIG. 6, there is no overlapping portion between mark D, which is the target mark, and the central visual field 102. In this case, the control unit 25 determines that the subject is viewing mark D, which is the target mark, in the peripheral visual field.

[0053] FIG. 7 shows an example of a display screen when there is an overlapping portion between the target mark and the central visual field. In the example shown in FIG. 7, assume that the target mark is mark D. Referring to FIG. 7, there is an overlapping portion between mark D, which is the target mark, and the central visual field 102. In this case, the control unit 25 determines that the subject is viewing mark D, which is the target mark, in the central visual field.

[0054] The control unit 25 separately calculates the correct answer rates of the visibility test when the subject is viewing the target mark in the central visual field and when the subject is viewing the target mark in the peripheral visual field.

[0055] In this way, by separately calculating the correct answer rates of the visibility test when the subject is viewing the target mark in the central visual field and when the subject is viewing the target mark in the peripheral visual field, the visibility evaluation system 1 can evaluate not only the visibility of the mark in the central visual field of the subject but also the visibility of the mark in the peripheral visual field of the subject.

[0056] Also, when executing the visibility test, the control unit 25 causes the display unit 24 to display the fixation point 101 and then simultaneously displays a plurality of marks at positions that do not overlap with the fixation point. By displaying the fixation point 101 and the plurality of marks at different positions in this way, the probability that the subject recognizes the target mark in the peripheral visual field rather than in the central visual field can be increased.

[0057] FIG. 8 is an example comparing the correct answer rates in the central visual field and the peripheral visual field when the target marks are mark A and mark B.

[0058] In the example shown in FIG. 8, when viewed in the central visual field, the correct answer rates of both trademark A and trademark B are equivalent at 90% or more. However, when viewed in the peripheral visual field, the correct answer rate of trademark A is significantly higher than that of trademark B. Therefore, it can be evaluated that the visibility in the peripheral visual field is significantly higher for trademark A than for trademark B.

[0059] Thus, according to the visibility evaluation system 1 according to this embodiment, it is possible to quantitatively compare the superiority and inferiority of the visibility of different trademarks in the peripheral visual field.

[0060] FIG. 9 is an example in which the target trademarks are trademarks of the same brand, and the correct answer rates in the central visual field and the peripheral visual field are compared between a trademark in which the characters included in the trademark are in Japanese (Japanese trademark) and a trademark in which the characters included in the trademark are in English (English trademark).

[0061] In the example shown in FIG. 9, when viewed in the central visual field, the correct answer rates of both the Japanese trademark and the English trademark are equivalent at 90% or more. However, when viewed in the peripheral visual field, the correct answer rate of the Japanese trademark is significantly higher than that of the English trademark. Therefore, it can be evaluated that the visibility in the peripheral visual field is significantly higher for the Japanese trademark than for the English trademark.

[0062] Thus, according to the visibility evaluation system 1 according to this embodiment, it is possible to quantitatively compare the superiority and inferiority of the visibility of trademarks of the same brand but different languages in the peripheral visual field.

[0063] Referring to the flowchart shown in FIG. 10, the operation of the visibility evaluation system 1 will be described.

[0064] Step S101: The control unit 25 of the information processing device 20 executes a visibility test. When the control unit 25 is executing the visibility test, the gaze detection device 10 detects the gaze direction of the subject undergoing the visibility test.

[0065] Step S102: The control unit 25 acquires, from the eye gaze detection device 10, information on the position of the central visual field of the subject in the display unit 24 when the visibility test is being executed.

[0066] Step S103: The control unit 25 determines whether there is an overlapping portion between the position of the target mark and the position of the central visual field of the subject when the target mark is being displayed on the display unit 24 in the visibility test. When there is an overlapping portion between the target mark and the central visual field, the control unit 25 determines that the subject was looking at the target mark in the central visual field. Also, when there is no overlapping portion between the target mark and the central visual field, the control unit 25 determines that the subject was looking at the target mark in the peripheral visual field.

[0067] Step S104: The control unit 25 separately calculates the correct answer rate of the visibility test when the subject was looking at the target mark in the central visual field and when the subject was looking at the target mark in the peripheral visual field.

[0068] <Oddball task> Subsequently, the case where the visibility test is an oddball task will be described. The oddball task is a task for measuring the attention function.

[0069] When the visibility test is an oddball task, the subject presses a specific key when viewing a display screen that does not include the target mark, and presses another specific key when viewing a display screen that includes the target mark. For example, the subject may press the "F" key on the keyboard included in the input unit 23 when viewing a display screen that does not include the target mark, and press the "J" key on the keyboard included in the input unit 23 when viewing a display screen that includes the target mark.

[0070] In the oddball task, it is desirable to suppress the ratio of the display screen including the target mark to about 20% or less. By doing so, since the display screen including the target mark appears only rarely, the subject cannot correctly recognize the target mark unless looking at the display unit 24 attentively.

[0071] For example, in the oddball task, assume that the target symbol is symbol D. In this case, if a display screen as shown in FIG. 4 is displayed, since FIG. 4 is a display screen showing symbol D which is the target symbol, it is a correct answer if the subject presses "J". Also, if a display screen as shown in FIG. 5 is displayed, since FIG. 5 is a display screen not showing symbol D which is the target symbol, it is a correct answer if the subject presses "F".

[0072] In the case of a visibility test such as the oddball task where the subject always presses a button, the control unit 25 can detect the response time from when a plurality of symbols are displayed on the display unit 24 until the subject answers.

[0073] The control unit 25 may separately calculate the average value of the response times when the subject is looking at the target symbol in the central visual field and when the subject is looking at the target symbol in the peripheral visual field. In this way, in addition to the correct answer rate, regarding the response time as well, the control unit 25 separately calculates the average value of the response times when the subject is looking at the target symbol in the central visual field and when the subject is looking at the target symbol in the peripheral visual field, so that the visibility evaluation system 1 can more detailedly evaluate the visibility of the symbol in the peripheral visual field of the subject.

[0074] <N-back task> Subsequently, the case where the visibility test is the N-back task will be described. The N-back task is a task for measuring the working memory function of retaining short-term memory.

[0075] The N-back task includes a 0-back task, a 1-back task, a 2-back task, etc. The 0-back task, the 1-back task, and the 2-back task have different levels of difficulty respectively.

[0076] In the case of the 0-back task, the subject presses a button when the target symbol is displayed. The 0-back task has a low load on the working memory and is mainly used as a control experiment.

[0077] In the case of the 1-back task, the subject presses the button when the target symbol was displayed one time before and the target symbol is also displayed in that round. In the 1-back task, since retention in working memory is required to answer correctly, the load on working memory is higher than that of the 0-back task.

[0078] In the case of the 2-back task, the subject presses the button when the target symbol was displayed two times before and the target symbol is also displayed in that round. In the 2-back task, since long-term retention in working memory is required to answer correctly, the load on working memory is even higher than that of the 1-back task.

[0079] FIG. 11 shows an example of the display screens for nine times in the 0-back task. In the example shown in FIG. 11, when the target symbol is symbol D, the correct answers for pressing the button are the 1st, 3rd, 4th, 6th, 7th, and 8th times.

[0080] FIG. 12 shows an example of the display screens for nine times in the 1-back task. In the example shown in FIG. 12, when the target symbol is symbol D, the correct answers for pressing the button are the 4th, 7th, and 8th times.

[0081] FIG. 13 shows an example of the display screens for nine times in the 2-back task. In the example shown in FIG. 13, when the target symbol is symbol D, the correct answers for pressing the button are the 3rd, 6th, and 8th times.

[0082] The control unit 25 may execute a visibility test without specifying a target symbol as another type of N-back task. Such N-back tasks include, for example, 1-back task multiple targets, 2-back task multiple targets, and the like.

[0083] In the case of the 1-back task with multiple targets, the subject presses the button when any target symbol is continuously displayed in the immediately previous and current times. This imposes a higher load on working memory than the 1-back task with a specified target symbol.

[0084] In the case of the 2-back task with multiple targets, the subject presses the button when any target symbol is displayed two times before and in the current time. This imposes a higher load on working memory than the 2-back task with a specified target symbol.

[0085] FIG. 14 shows an example of the display screen for nine times in the 1-back task with multiple targets. In the example shown in FIG. 14, the correct answers when pressing the button are the 2nd, 4th, 5th, 7th, 8th, and 9th times.

[0086] FIG. 15 shows an example of the display screen for nine times in the 2-back task with multiple targets. In the example shown in FIG. 15, the correct answers when pressing the button are the 3rd, 4th, 6th, 8th, and 9th times.

[0087] Even when the visibility test is the N-back task, the control unit 25 can separately calculate the correct answer rate of the visibility test when the subject is looking at the target symbol in the central visual field and when the subject is looking at the target symbol in the peripheral visual field. Also, even when the visibility test is the N-back task, the control unit 25 can separately calculate the average value of the response time when the subject is looking at the target symbol in the central visual field and when the subject is looking at the target symbol in the peripheral visual field.

[0088] Thus, in the visibility evaluation system 1 according to this embodiment, the control unit 25 of the information processing apparatus 50 determines the correct answer rate, which is the ratio of the target logo, which is the logo to be evaluated for visibility, correctly recognized by the subject based on the results of the visibility test. Further, the control unit 25 acquires information on the position of the central visual field of the subject in the display unit 24 when the visibility test is being executed from the gaze detection device 10. If there is an overlapping portion between the target logo and the central visual field, it is determined that the subject is looking at the target logo in the central visual field. If there is no overlapping portion between the target logo and the central visual field, it is determined that the subject is looking at the target logo in the peripheral visual field. Then, the control unit 25 calculates the correct answer rate separately when the subject is looking at the target logo in the central visual field and when the subject is looking at the target logo in the peripheral visual field. Thereby, the visibility evaluation system 1 according to this embodiment can quantitatively evaluate the visibility of the logo when the subject is looking at the logo in the peripheral visual field. In this way, by quantitatively evaluating the visibility of the logo when looking at the logo in the peripheral visual field, the value of the visual information of the logo can be quantified and expected to be applied to marketing analysis.

[0089] In addition, when evaluating the visibility of a logo by means of a questionnaire survey as in the prior art, it is necessary to conduct a questionnaire survey on a large number of subjects. However, the visibility evaluation system 1 according to this embodiment can quantitatively evaluate the visibility of a logo even with a small number of subjects.

[0090] Although the present invention has been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications and alterations based on this disclosure. Therefore, it should be noted that these modifications and alterations are included within the scope of the present invention. For example, the functions included in each component, each step, etc. can be rearranged so as not to be logically inconsistent, and it is possible to combine or divide a plurality of components or steps into one. Also, although the present invention has been described centering on the apparatus, the present invention can also be realized as a method including the steps executed by each component of the apparatus. Further, although the present invention has been described centering on the apparatus, the present invention can also be realized as a method, program, or storage medium recording the program executed by a processor included in the apparatus, and it should be understood that these are also included within the scope of the present invention.

[0091] For example, in the present embodiment, the gaze detection device 10 and the information processing device 20 have been described as separate devices, but the gaze detection device 10 and the information processing device 20 may be integrally configured.

Description of Reference Numerals

[0092] 1 Visual recognition evaluation system 10 Gaze detection device 20 Information processing device 21 Communication unit 22 Storage unit 23 Input unit 24 Display unit 25 Control unit 101 Fixation point 102 Central visual field

Claims

1. A visibility evaluation system comprising a gaze detection device for detecting the gaze direction of a subject and an information processing device, wherein the information processing device comprises a display unit, and a control unit that executes a visibility test for causing a plurality of signs to be displayed on the display unit and answered by the subject, wherein the control unit determines a correct answer rate, which is the ratio of the target sign, which is the sign to be evaluated for visibility, correctly recognized by the subject, based on the result of the visibility test, acquires information on the position of the central visual field of the subject in the display unit when the visibility test is being executed, from the gaze detection device, when there is an overlapping portion between the target sign and the central visual field, determines that the subject was looking at the target sign in the central visual field, and when there is no overlapping portion between the target sign and the central visual field, determines that the subject was looking at the target sign in the peripheral visual field, and calculates the correct answer rate separately for the case where the subject was looking at the target sign in the central visual field and the case where the subject was looking at the target sign in the peripheral visual field. A visibility evaluation system.

2. In the visibility evaluation system according to claim 1, the control unit detects a response time from when the plurality of signs are displayed on the display unit until the subject answers in the visibility test, and calculates an average value of the response time separately for the case where the subject was looking at the target sign in the central visual field and the case where the subject was looking at the target sign in the peripheral visual field. A visibility evaluation system.

3. In the visibility evaluation system according to claim 1, when executing the visibility test, the control unit causes a fixation point to be displayed on the display unit and then simultaneously displays the plurality of signs at positions that do not overlap with the fixation point. A visibility evaluation system.

4. In the visibility evaluation system according to claim 1, the visibility test is a test including any one of a Go / No-go task, an oddball task, and an N-back task. A visibility evaluation system.

Images