Information output device, information output method, and program

Abstract

To easily grasp whether each person is at risk of getting an infection or not.SOLUTION: An information output device 10 has an acquisition part 11 for acquiring a captured image obtained by imaging a space, a detection part 12 for detecting a person from inside the captured image, a determination part 13 for determining a radius of a circle superimposed on the captured image according to a prescribed condition, and a display control part 15 for displaying an image obtained by superimposing a circle enclosing each detected person on the captured image.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an information output device, an information output method, and a program. [Background technology]

[0002] In recent years, image processing has been used for various purposes. For example, Patent Document 1 describes a system that adjusts the environment in a space so that the reach of droplets from a first subject is outside the breathing zone of a second subject, in which the positions and orientations of the faces of the first subject and the second subject are determined by image processing. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 044826 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to reduce the risk of contracting an infectious disease, it is important to avoid situations where one may contract an infectious disease. However, it is difficult to grasp whether each person is in a situation where one may contract an infectious disease. One of the objects of the present invention is to make it easier to grasp whether each person is in a situation where one may contract an infectious disease. [Means for solving the problem]

[0005] According to the present invention, An acquisition means for acquiring a captured image of a space; A detection means for detecting a person from within the captured image; a determination means for determining a radius of a circle to be superimposed on the captured image in accordance with a predetermined condition; a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; An information output device having the following is provided.

[0006] Further, according to the present invention, The computer Acquire a photographed image of the space, Detecting a person from within the captured image; determining a radius of a circle to be superimposed on the captured image according to a predetermined condition; There is provided an information output method for displaying an image in which a circle surrounding each detected person is superimposed on the photographed image.

[0007] Further, according to the present invention, Computer, An acquisition means for acquiring a photographed image of a space; a detection means for detecting a person from within the captured image; A determination means for determining a radius of a circle to be superimposed on the captured image in accordance with a predetermined condition; and a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; A program is provided to function as a Effect of the Invention

[0008] According to the present invention, it becomes easier to know whether or not each person is in a situation where he or she may contract an infectious disease. [Brief description of the drawings]

[0009] [Figure 1] FIG. 2 is a diagram showing an example of a screen provided by the information output device of the present embodiment. [Diagram 2] FIG. 2 is a diagram showing an example of a screen provided by the information output device of the present embodiment. [Diagram 3] FIG. 2 is a diagram illustrating an example of a hardware configuration of an information output device according to the present embodiment. [Figure 4] FIG. 2 is an example of a functional block diagram of the information output device according to the embodiment; [Diagram 5] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. [Figure 6]FIG. 1 is a diagram for explaining an example of an imaging device according to an embodiment of the present invention. [Figure 7] 4 is a diagram showing an example of information provided by the information output device of the present embodiment. FIG. [Figure 8] FIG. 4 is a diagram for explaining a process of the information output device according to the embodiment. [Figure 9] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. [Figure 10] FIG. 4 is a diagram for explaining a process of the information output device according to the embodiment. [Figure 11] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. [Figure 12] FIG. 4 is a diagram for explaining a process of the information output device according to the embodiment. [Figure 13] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. [Figure 14] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. [Figure 15] 10 is a flowchart showing an example of a process flow of the information output device of the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all the drawings, the same components are given the same reference numerals and the description will be omitted as appropriate.

[0011] <First embodiment> "overview" When the information output device acquires a photographed image of a space, it analyzes the photographed image and generates and outputs a circular display image as shown in Fig. 1 or Fig. 2. The details will be described later, but the circular display image in Fig. 1 is an image in which a circle is superimposed on the photographed image so as to surround the position of each person detected in the photographed image. The circular display image in Fig. 2 is an image in which a circle is superimposed on a plan view showing the positions of the detected people (P 1 ~P 6The image shows the location of the person, and circles are superimposed around the location of each person detected in the captured image. Depending on whether the circles overlap, it can be seen whether the distance between people is favorable from the perspective of preventing infection.

[0012] The information output device has a feature that the radius of the circle displayed in the circular display image is determined based on at least one of "the state of the space when the photographed image was generated" and "the state of each person when the photographed image was generated." In other words, the size of the circle shown in Fig. 1 or Fig. 2 changes depending on the state of the space or the state of each person when the photographed image was generated.

[0013] The risk of infection can change depending on the state of the space at that time (e.g., temperature, humidity, amount of ultraviolet rays, etc.) and the state of each person (e.g., height, presence or absence of disease, age, body temperature, etc.). According to the information output device of this embodiment, which determines the radius of the circle to be displayed in the circular display image based on at least one of "the state of the space when the captured image was generated" and "the state of each person when the captured image was generated", it becomes possible to accurately grasp whether each person is in a situation where they may contract an infectious disease, taking into account various conditions at that time.

[0014] "Hardware Configuration" Next, an example of the hardware configuration of the information output device will be described. Fig. 3 is a diagram showing an example of the hardware configuration of the information output device. Each functional unit of the information output device is realized by any combination of hardware and software, centering on a CPU (Central Processing Unit) of any computer, memory, programs loaded into the memory, a storage unit such as a hard disk for storing the programs (programs stored beforehand at the stage of shipping the device, as well as programs downloaded from storage media such as CDs (Compact Discs) or servers on the Internet, can be stored), and a network connection interface. Those skilled in the art will understand that there are various variations in the methods and devices for realizing the above.

[0015] As shown in FIG. 3, the information output device has a processor 1A, a memory 2A, an input / output interface 3A, a peripheral circuit 4A, and a bus 5A. The peripheral circuit 4A includes various modules. The information output device does not have to have the peripheral circuit 4A. The information output device may be composed of multiple devices that are physically and / or logically separated, or may be composed of a single device that is physically and logically integrated. In the former case, each of the multiple devices that make up the information output device can have the above hardware configuration.

[0016] The bus 5A is a data transmission path for the processor 1A, memory 2A, peripheral circuit 4A, and input / output interface 3A to transmit and receive data to each other. The processor 1A is an arithmetic processing device such as a CPU or a GPU (Graphics Processing Unit). The memory 2A is a memory such as a RAM (Random Access Memory) or a ROM (Read Only Memory). The input / output interface 3A includes an interface for acquiring information from an input device, an external device, an external server, an external sensor, etc., and an interface for outputting information to an output device, an external device, an external server, etc. Examples of the input device include a keyboard, a mouse, a microphone, etc. Examples of the output device include a display, a speaker, a printer, a mailer, etc. The processor 1A can issue commands to each module and perform calculations based on the results of those calculations.

[0017] "Function Configuration" Next, a functional configuration of the information output device will be described. An example of a functional block diagram of the information output device 10 is shown in Fig. 4. As shown in the figure, the information output device 10 has an acquisition unit 11, a detection unit 12, a determination unit 13, a generation unit 14, and a display control unit 15.

[0018] These functional units execute the processes shown in the flowchart of Fig. 5. Below, each process and the configuration of the functional units that execute each process will be described in the order shown in the flowchart of Fig. 5.

[0019] - Acquire the captured image (S11) - In S11, the acquisition unit 11 acquires a captured image of a space.

[0020] The space to be photographed is a space in which a person may exist, such as, but not limited to, a street or inside a facility.

[0021] The captured image is generated by the imaging device 20. The imaging device 20 is, for example, a surveillance camera installed at an arbitrary position on a road or inside a facility. As shown in Fig. 6, the imaging device 20 is installed at a position and orientation to capture an image of a person present in a space.

[0022] Alternatively, the imaging device 20 may be a camera that is installed on a moving object such as an automobile, a bicycle, or an aircraft, and captures images of various spaces while moving. In this case, the imaging device 20 is also installed on the moving object at a position and orientation that allows it to capture images of people present in the space.

[0023] Alternatively, the imaging device 20 may be a camera carried by a person (including a mobile terminal with a camera function, such as a smartphone, a tablet terminal, or a mobile phone).

[0024] The acquisition unit 11 may acquire the captured images generated by the imaging device 20 in real time processing or in batch processing. The means for inputting the captured images generated by the imaging device 20 to the information output device 10 in real time processing or batch processing can be realized using any technology.

[0025] -Detecting a person (S12)- In S12, the detection unit 12 detects a person from within the captured image. The detection unit 12 can detect the person by using any technique.

[0026] -Determine the radius (S13)- In S13, the determination unit 13 determines the radius of the circle to be displayed in the circle display image according to a predetermined condition. For example, the determination unit 13 determines the radius of the circle to be displayed in the circle display image based on at least one of the state of the space when the captured image was generated and the state of each person detected in the captured image.

[0027] The state of the space when the captured image is generated is defined by items that may affect the risk of infection. Examples of such items include, but are not limited to, temperature, humidity, and the amount of ultraviolet rays. The determination unit 13 may obtain actual measured values ​​of these items by various sensors installed in the space, and grasp the state of the space based on the actual measured values. In addition, the determination unit 13 may obtain predicted or actual measured values ​​of these items from various servers, and grasp the state of the space based on the predicted or actual measured values.

[0028] The determination unit 13 determines the radius according to the state of the space that has been grasped, based on "information indicating the relationship between the state of the space and the value of the radius" (table, calculation formula, etc.) that is stored in advance. Note that the information specifies that the higher the infection risk (risk of infecting other people, risk of infection from other people) is, the larger the radius that is determined, and the lower the infection risk is, the smaller the radius that is determined.

[0029] In addition, the state of each person detected from the captured image is defined by items that may affect the risk of infection. Examples of such items include, but are not limited to, height, presence or absence of disease, age, body temperature, etc. The determination unit 13 analyzes the captured image or actual measurements by other sensors installed in the space to identify the state of these items for each detected person.

[0030] Then, the determination unit 13 determines a radius for each person according to the state of each person that has been grasped, based on "information indicating the relationship between a person's state and the value of the radius" (table, calculation formula, etc.) that is stored in advance. Note that the information specifies that the higher the infection risk (risk of infecting other people, risk of infection from other people) is, the larger the radius that is determined, and the lower the infection risk is, the smaller the radius that is determined.

[0031] In the following embodiment, a specific example of the process for determining the radius will be described.

[0032] -Generate a circle display image (S14)- In S14, the generation unit 14 generates a circular display image in which an image showing the position of each detected person includes a circle whose radius is the value determined by the determination unit 13 and which surrounds the position of each detected person.

[0033] FIG. 1 shows an example of a circle display image. The circle display image shown in the figure is an image in which a circle is superimposed on a photographed image so as to surround the position of each person detected in the photographed image. In the example shown in the figure, 1 ~P 6 These six people are detected in the captured image. The center of the circle surrounding each person is the position of the person. The circle is approximately parallel to the ground. In the illustrated example, the circle is displayed around the waist of the person, but it may be displayed at the feet, around the face, or in another position. Also, as shown in FIG. 7, a hemisphere that includes a part of the circle may be displayed so as to include each person.

[0034] Another example of the circle display image is shown in FIG. 2. The circle display image shown in the figure is an image in which a circle is superimposed on a plan view showing the positions of the detected people so as to surround the positions of each person detected in the photographed image. In the example shown in the figure, 1 ~P 6 The positions of six people are shown. The center of the circle surrounding each person's position is the position of each person. In the illustrated example, the vertical and horizontal axes are displayed as length scales, making it easier to grasp the distance between people.

[0035] When the radius of the circle to be displayed in the circular display image is determined based on the state of the space when the captured image was generated, the radius (size) of the circle shown in Figure 1 or Figure 2 may change depending on the state of the space at that time. Also, when the radius of the circle to be displayed in the circular display image is determined for each person based on the state of each person detected from the captured image, the radius (size) of the displayed circle may differ for each person, as shown in Figure 1 or Figure 2. Also, the radius (size) of the circle surrounding each person may change depending on the state of each person at that time.

[0036] -Output a circular image (S15)- In S15, the display control unit 15 transmits / inputs the circular display image generated by the generation unit 14 to the display device, and causes the display device to display the circular display image. Examples of the display device include, but are not limited to, a display, a projection device, a smartphone, a tablet terminal, a mobile phone, a personal computer, and the like.

[0037] "Action and effect" When the information output device 10 of this embodiment acquires an image of a space, it analyzes the captured image and can generate and output a circle display image as shown in Figure 1 and Figure 2. Depending on whether the circles overlap, it can be understood whether the distance between people is favorable from the viewpoint of preventing infection.

[0038] The information output device 10 then determines the radius of the circle to be displayed in the circular display image based on at least one of the "state of the space when the captured image was generated" and the "state of each person when the captured image was generated." Specifically, the higher the infection risk (risk of infecting other people, risk of infection from other people), the larger the radius is determined, and the lower the infection risk, the smaller the radius is determined. With this information output device 10, it becomes possible to accurately grasp whether each person is in a situation where they may contract an infectious disease, taking into account various conditions at that time.

[0039] <Second embodiment> The information output device 10 of this embodiment determines the radius of the circle to be displayed in the circle display image based on at least one of the temperature, humidity, and amount of ultraviolet light in the space when the captured image was generated. This will be described in detail below.

[0040] The determination unit 13 determines the radius of the circle to be displayed in the circle display image based on at least one of the temperature, humidity, and amount of ultraviolet light in the space when the captured image was generated.

[0041] It is known that the lower the temperature, the lower the humidity, and the lower the amount of ultraviolet light, the higher the risk of infection with an infectious disease, as shown in Fig. 8. Therefore, in the "information indicating the relationship between the state of the space and the value of the radius" described in the first embodiment, a larger radius is determined as the temperature, humidity, and amount of ultraviolet light are lower, and a smaller radius is determined as the temperature, humidity, and amount of ultraviolet light are higher.

[0042] 9 shows an example of processing by the determination unit 13. In the example shown, the determination unit 13 judges whether the temperature, humidity, and amount of ultraviolet rays are each higher than a reference value (S302 to S308), and classifies the infection risk into "highest", "high", "slightly high", "normal", "slightly low", "low", and "lowest" based on the judgment result (S309 to S315). Then, the determination unit 13 determines the radius of the circle to be displayed in the circle display image based on the classified infection risk (S316). The higher the infection risk, the larger the radius that is determined.

[0043] In the illustrated example, the order of the temperature, humidity, and amount of ultraviolet light in the space is used to determine whether each value is higher than the reference value. Alternatively, the order of the determination may be different.

[0044] In the illustrated example, the radius of the circle displayed in the circular display image is determined based on all of the temperature, humidity, and amount of ultraviolet light in the space. As a modified example, the radius of the circle displayed in the circular display image may be determined by a similar process based on only a portion of the temperature, humidity, and amount of ultraviolet light in the space.

[0045] In the illustrated example, the temperature, humidity, and amount of ultraviolet light are each classified into two states based on their values ​​("a state higher than the reference value" and "a state lower than the reference value"), and the infection risk is determined based on the results of these classifications. As a modified example, the temperature, humidity, and amount of ultraviolet light may each be classified into three or more states, and the infection risk may be determined based on the results of these classifications.

[0046] In the illustrated example, the temperature, humidity, and amount of ultraviolet light are each classified into two states based on their values ​​("state higher than the standard value" and "state lower than the standard value"), the infection risk is determined based on the classification results, and the radius of the circle to be displayed in the circle display image is then determined based on the determined infection risk. As a modified example, the temperature, humidity, and amount of ultraviolet light may each be classified into two states based on their values ​​("state higher than the standard value" and "state lower than the standard value"), and the radius of the circle to be displayed in the circle display image may be determined based on the classification results. In other words, the radius of the circle to be displayed in the circle display image may be determined from the above classification results without determining the infection risk.

[0047] Other configurations of the information output device 10 of this embodiment are similar to those of the first embodiment.

[0048] As described above, the information output device 10 of this embodiment achieves the same effects as those of the first embodiment. Furthermore, the information output device 10 of this embodiment can determine the radius of the circle to be displayed in the circle display image based on at least one of the temperature, humidity, and amount of ultraviolet light in the space when the captured image was generated. Such an information output device 10 can accurately grasp whether each person is in a situation where they may be infected with an infectious disease, taking into account the state of the space at that time.

[0049] <Third embodiment> The information output device 10 of the embodiment determines the radius of the circle to be displayed in the circle display image based on the height of each person at the time when the photographed image was generated. This will be described in detail below.

[0050] The determining unit 13 specifies the height of each person detected from the captured image based on the captured image. Then, the determining unit 13 determines the radius of the circle to be displayed in the circle display image based on the specified height of each person.

[0051] It is known that the taller a person is, the further the droplets travel, increasing the risk of infecting other people, as shown in Fig. 10. Therefore, in the "information indicating the relationship between the person's condition and the radius value" described in the first embodiment, it is determined that the taller the person is, the larger the radius is determined, and the shorter the person is, the smaller the radius is determined.

[0052] The process of identifying the height of a person by image analysis can be realized by using any technology. For example, when the imaging device 20 is a surveillance camera installed at an arbitrary position on the road or in a facility, an arbitrary object (post, vending machine, traffic light, etc.) installed in the shooting area is always present in the shot image. The actual height of this object may be measured in advance and input to the information output device 10. Then, the information output device 10 may estimate the height of each person based on the relative positional relationship between each person detected in the shot image and the object, the height of the object in the image, and the actual height of the object.

[0053] Alternatively, the appearance feature amount and height of each of a plurality of persons may be registered in a database in advance, and the determining unit 13 may recognize the detected person by comparing the appearance feature amount of the person detected in the photographed image with the appearance feature amount registered in the database, and obtain the height of the recognized person from the database.

[0054] 11 shows an example of processing by the detection unit 12 and the determination unit 13. In the illustrated example, after the detection unit 12 detects people from within the captured image (S201), the determination unit 13 identifies the height of each detected person (S202). Then, if the height is higher than the reference value (YES in S203), it is determined that the infection risk is high, and the radius of the circle is determined according to the determination result (S205). On the other hand, if the height is lower than the reference value (NO in S203), it is determined that the infection risk is low, and the radius of the circle is determined according to the determination result (S204). The higher the infection risk, the larger the radius is determined.

[0055] In the illustrated example, height is classified into two states based on its value ("higher than the standard value" and "lower than the standard value"), and the infection risk is determined based on the classification results. As a modified example, height may be classified into three or more states, and the infection risk may be determined based on the classification results.

[0056] In the illustrated example, the height is classified into two states based on its value ("higher than the standard value" and "lower than the standard value"), the infection risk is determined based on the classification results, and the radius of the circle to be displayed in the circle display image is then determined based on the determined infection risk. As a modified example, the height may be classified into two states based on its value ("higher than the standard value" and "lower than the standard value"), and the radius of the circle to be displayed in the circle display image may be determined based on the classification results. In other words, the radius of the circle to be displayed in the circle display image may be determined from the classification results without determining the infection risk.

[0057] Other configurations of the information output device 10 of this embodiment are similar to those of the first and second embodiments.

[0058] As described above, the information output device 10 of this embodiment achieves the same effects as those of the first and second embodiments. Furthermore, the information output device 10 of this embodiment can determine the radius of the circle to be displayed in the circle display image for each person based on the height of each person detected from the captured image. With this information output device 10, it becomes possible to accurately grasp whether each person is in a situation where they may be infected with an infectious disease, taking into account the height of each person present in the captured image.

[0059] <Fourth embodiment> The information output device 10 of the embodiment determines the radius of the circle to be displayed in the circle display image based on the presence or absence of a disease of each person at the time when the photographed image was generated. This will be described in detail below.

[0060] The determination unit 13 specifies the presence or absence of a disease for each person detected from the photographed image based on the photographed image. Then, the determination unit 13 determines the radius of a circle to be displayed in the circle display image based on the presence or absence of a disease for each person specified.

[0061] As shown in Fig. 12, it is known that the more frequently a person coughs or sneezes due to a disease, the higher the risk of infecting other people. Therefore, in the "information indicating the relationship between a person's condition and the radius value" described in the first embodiment, a relatively large radius is determined for people with a disease, and a relatively small radius is determined for people without a disease.

[0062] The process of identifying the presence or absence of a disease in a person by image analysis can be realized by using any technology. For example, the determination unit 13 may analyze a captured image (preferably a moving image) to extract joint points of a person, and estimate the posture of the person based on the extraction result. The determination unit 13 may then determine that a person whose posture when coughing or sneezing is detected has a disease. The extraction of joint points can be realized by using any technology, such as OpenPose.

[0063] Alternatively, the appearance feature amount and the presence or absence of a disease of each of a plurality of persons may be registered in a database in advance. Then, the determination unit 13 may compare the appearance feature amount of the person detected from the captured image with the appearance feature amount registered in the database to recognize the detected person, and obtain information indicating the presence or absence of a disease of the recognized person from the database.

[0064] 13 shows an example of the process performed by the detection unit 12 and the determination unit 13. In the example shown in the figure, after the detection unit 12 detects people from within a captured image (S101), the determination unit 13 identifies the presence or absence of a disease for each of the detected people (S102). Then, if there is a disease (S103), Yes ), it is determined that there is a high risk of infection, and the radius of the circle is determined according to the result of the determination (S105). none ), the risk of infection is judged to be low, and the radius of the circle is determined according to the judgment result (S104). The higher the risk of infection, the larger the radius that is determined.

[0065] In the illustrated example, the infection risk is determined based on the result of identifying the presence or absence of a disease, and then the radius of the circle to be displayed in the circle display image is determined based on the determined infection risk. As a modified example, the radius of the circle to be displayed in the circle display image may be determined based on the result of identifying the presence or absence of a disease. In other words, the radius of the circle to be displayed in the circle display image may be determined from the result of identifying the presence or absence of a disease without determining the infection risk.

[0066] Other configurations of the information output device 10 of this embodiment are similar to those of the first to third embodiments.

[0067] As described above, the information output device 10 of this embodiment achieves the same effects as those of the first to third embodiments. Furthermore, the information output device 10 of this embodiment can determine the radius of the circle to be displayed in the circle display image for each person based on the presence or absence of a disease of each person detected from the captured image. With this information output device 10, it becomes possible to accurately grasp whether each person is in a situation where they may contract an infectious disease, taking into account the presence or absence of a disease of each person at that time.

[0068] <Fifth embodiment> The information output device 10 of the embodiment determines the radius of the circle to be displayed in the circle display image based on the age of each person at the time when the photographed image was generated.

[0069] The determination unit 13 specifies the age of each person detected from the photographed image based on the photographed image. Then, the determination unit 13 determines the radius of the circle to be displayed in the circle display image based on the specified age of each person.

[0070] It is known that as people get older, their bodies become weaker and the risk of infection increases. Therefore, in the "information indicating the relationship between a person's condition and the value of the radius" described in the first embodiment, a larger radius is determined when the person's age is higher than a reference value, and a smaller radius is determined when the person's age is lower than the reference value.

[0071] The process of identifying the age of a person by image analysis can be realized using any technology. For example, the determination unit 13 may estimate the age of a person based on the facial features of each person included in the captured image (the positions of facial features such as the eyes, nose, and mouth, the degree of wrinkles, etc.).

[0072] Alternatively, the appearance feature amount and age of each of a plurality of persons may be registered in a database in advance, and the determination unit 13 may recognize the detected person by comparing the appearance feature amount of the person detected in the photographed image with the appearance feature amount registered in the database, and obtain the age of the recognized person from the database.

[0073] 14 shows an example of the process performed by the detection unit 12 and the determination unit 13. In the example shown, after the detection unit 12 detects people from within the captured image (S401), the determination unit 13 identifies the age of each of the detected people (S402). If the age is higher than a reference value (e.g., 65 years old, 70 years old, etc.) (YES in S403), it is determined that the risk of infection is high, and the radius of the circle is determined according to the determination result (S405). On the other hand, if the age is lower than the reference value (NO in S403), it is determined that the risk of infection is low, and the radius of the circle is determined according to the determination result (S404). The higher the risk of infection, the larger the radius is determined.

[0074] In the illustrated example, age is classified into two states based on its value ("above the standard value" and "below the standard value"), and the infection risk is determined based on the classification results. As a modified example, age may be classified into three or more states, and the infection risk may be determined based on the classification results.

[0075] In the illustrated example, age is classified into two states based on its value ("higher than the standard value" and "lower than the standard value"), the infection risk is determined based on the classification results, and the radius of the circle to be displayed in the circle display image is then determined based on the determined infection risk. As a modified example, age may be classified into two states based on its value ("higher than the standard value" and "lower than the standard value"), and the radius of the circle to be displayed in the circle display image may be determined based on the classification results. In other words, the radius of the circle to be displayed in the circle display image may be determined from the classification results without determining the infection risk.

[0076] Other configurations of the information output device 10 of this embodiment are similar to those of the first to fourth embodiments.

[0077] As described above, the information output device 10 of this embodiment achieves the same effects as those of the first to fourth embodiments. Furthermore, the information output device 10 of this embodiment can determine the radius of the circle to be displayed in the circle display image for each person based on the age of each person detected from the captured image. With this information output device 10, it becomes possible to accurately grasp whether each person is in a situation where they may be infected with an infectious disease, taking into account the age of each person present in the captured image.

[0078] Sixth embodiment The information output device 10 of the embodiment determines the radius of the circle to be displayed in the circle display image based on the body temperature of each person when the photographed image was generated. This will be described in detail below.

[0079] The determination unit 13 specifies the body temperature of each person detected from the captured image based on the captured image. Then, the determination unit 13 determines the radius of the circle to be displayed in the circle display image based on the body temperature of each person specified.

[0080] If the body temperature is higher than the reference value (e.g., 37°C), there is a possibility that the person is infected with an infectious disease. Therefore, in the "information indicating the relationship between the person's condition and the radius value" described in the first embodiment, it is determined that a larger radius is determined when the body temperature is higher than the reference value, and a smaller radius is determined when the body temperature is lower than the reference value.

[0081] The process of determining the temperature of each person can be accomplished using any number of techniques, for example, the temperature of each person may be determined based on a thermal image generated by an infrared camera.

[0082] Alternatively, the appearance feature of each of a plurality of people and the body temperature measured on that day may be registered in a database in advance. Then, the determination unit 13 may recognize the detected person by comparing the appearance feature of the person detected in the captured image with the appearance feature registered in the database, and obtain the body temperature of the recognized person from the database.

[0083] 15 shows an example of the process performed by the detection unit 12 and the determination unit 13. In the illustrated example, after the detection unit 12 detects people from within the captured image (S501), the determination unit 13 identifies the body temperature of each of the detected people (S502). If the body temperature is higher than a reference value (e.g., 37°C) (YES in S503), it is determined that the risk of infection is high, and the radius of the circle is determined according to the determination result (S505). On the other hand, if the body temperature is lower than the reference value (NO in S503), it is determined that the risk of infection is low, and the radius of the circle is determined according to the determination result (S504). The higher the risk of infection, the larger the radius that is determined.

[0084] In the illustrated example, the body temperature is classified into two states based on its value ("higher than the reference value" and "lower than the reference value"), and the infection risk is determined based on the classification results. As a modified example, the body temperature may be classified into three or more states, and the infection risk may be determined based on the classification results.

[0085] In the illustrated example, the body temperature is classified into two states based on its value ("higher than the reference value" and "lower than the reference value"), the infection risk is determined based on the classification results, and the radius of the circle to be displayed in the circle display image is determined based on the determined infection risk. As a modified example, the body temperature may be classified into two states based on its value ("higher than the reference value" and "lower than the reference value"), and the radius of the circle to be displayed in the circle display image may be determined based on the classification results. In other words, the radius of the circle to be displayed in the circle display image may be determined from the classification results without determining the infection risk.

[0086] Other configurations of the information output device 10 of this embodiment are similar to those of the first to fifth embodiments.

[0087] As described above, the information output device 10 of this embodiment achieves the same effects as those of the first to fifth embodiments. Furthermore, the information output device 10 of this embodiment can determine the radius of the circle to be displayed in the circle display image for each person based on the body temperature of each person detected from the captured image. With this information output device 10, it becomes possible to accurately grasp whether each person is in a situation where they may be infected with an infectious disease, taking into account the body temperature of each person at that time.

[0088] In this specification, "acquisition" includes at least one of the following: "the device itself goes to retrieve data stored in another device or storage medium (active acquisition)" based on user input or based on program instructions, such as receiving data by making a request or inquiry to another device, or accessing another device or storage medium and reading it, and "the device itself inputs data output from another device (passive acquisition)" based on user input or based on program instructions, such as receiving data that is distributed (or transmitted, push notification, etc.), and selecting and acquiring data from among the received data or information, and "editing data (converting it to text, rearranging data, extracting some data, changing the file format, etc.) to generate new data and acquiring the new data."

[0089] A part or all of the above-described embodiments can be described as, but are not limited to, the following supplementary notes. 1. An acquisition means for acquiring an image of a space; A detection means for detecting a person from within the captured image; a determination means for determining a radius of a circle to be superimposed on the captured image in accordance with a predetermined condition; a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; An information output device having the following. 2. The determining means The information output device according to claim 1, further comprising: a determining unit that determines a radius of a circle to be superimposed on the captured image based on a state of the space when the captured image was generated. 3. The determining means The information output device according to claim 2, which determines the radius of a circle to be superimposed on the captured image based on at least one of the temperature, humidity, and amount of ultraviolet light in the space at the time the captured image was generated. 4. The determining means An information output device described in any one of 1 to 3, which determines the radius of a circle to be superimposed on the captured image for each detected person based on the state of each detected person at the time the captured image was generated. 5. The determining means 5. The information output device according to 4, further comprising: determining a radius of a circle to be superimposed on the captured image based on a height of the detected person identified based on the captured image. 6. The determining means 6. The information output device according to 4 or 5, which determines a radius of a circle to be superimposed on the photographed image based on the presence or absence of a disease of the detected person identified based on the photographed image. 7. The determining means 7. The information output device according to any one of 4 to 6, which determines a radius of a circle to be superimposed on the captured image based on the age of the detected person identified based on the captured image. 8. The determining means: The information output device according to any one of 4 to 6, further comprising: a determining unit that determines a radius of a circle to be superimposed on the captured image based on the body temperature of the detected person identified based on a thermal image generated by an infrared camera. 9. The computer: Acquire a photographed image of the space, Detecting a person from within the captured image; determining a radius of a circle to be superimposed on the captured image according to a predetermined condition; An information output method that displays an image in which a circle surrounding each of the detected people is superimposed on the captured image. 10. Computer An acquisition means for acquiring a photographed image of a space; a detection means for detecting a person from within the captured image; A determination means for determining a radius of a circle to be superimposed on the captured image in accordance with a predetermined condition; and a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; A program that functions as a [Explanation of symbols]

[0090] 10 Information output device 11 Acquisition Department 12 Detection section 13 Decision Section 14 Generation part 15 Display control section 20 Imaging device 1A Processor 2A Memory 3A input / output I / F 4A Peripheral circuit 5A Bus

Claims

1. An acquisition means for acquiring a captured image of a space; A detection means for detecting a person from within the captured image; a determination means for determining a radius of a circle to be superimposed on the captured image according to an amount of ultraviolet light when the captured image was generated; a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; An information output device having the following.

2. The determining means is The information output device according to claim 1 , wherein a radius of a circle to be displayed superimposed on the captured image is determined based on a state of the space when the captured image was generated.

3. The determining means is 3. The information output device according to claim 2, wherein a radius of a circle to be displayed superimposed on the captured image is determined based on at least one of a temperature and a humidity of the space at the time when the captured image was generated.

4. The determining means is An information output device as described in any one of claims 1 to 3, wherein the radius of a circle to be superimposed on the captured image is determined for each detected person based on the state of each detected person at the time the captured image was generated.

5. The determining means is The information output device according to claim 4 , wherein a radius of a circle to be displayed superimposed on the photographed image is determined based on a height of the detected person specified based on the photographed image.

6. The determining means is The information output device according to claim 4 , wherein a radius of a circle to be displayed superimposed on the photographed image is determined based on the presence or absence of a disease of the detected person specified based on the photographed image.

7. The determining means is 7. The information output device according to claim 4, wherein a radius of a circle to be displayed superimposed on the photographed image is determined based on an age of the detected person specified based on the photographed image.

8. The determining means is 7. The information output device according to claim 4, wherein the radius of a circle to be superimposed on the captured image is determined based on the body temperature of the detected person identified based on a thermal image generated by an infrared camera.

9. The computer Acquire a photographed image of the space, Detecting a person from within the captured image; determining a radius of a circle to be superimposed on the captured image according to an amount of ultraviolet light when the captured image was generated; An information output method that displays an image in which a circle surrounding each of the detected people is superimposed on the captured image.

10. Computer, An acquisition means for acquiring a photographed image of a space; a detection means for detecting a person from within the captured image; A determination means for determining a radius of a circle to be superimposed on the captured image in accordance with an amount of ultraviolet light when the captured image was generated; and a display control means for displaying an image in which a circle surrounding each of the detected persons is superimposed on the photographed image; A program that functions as a

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