Abstract: A method includes setting an exposure time of an image sensor included in a terminal device so that a bright line corresponding to each of a plurality of exposure lines included in the image sensor appears according to a change in luminance of each of the plurality of subjects. The method also includes obtaining a bright line image including a plurality of bright lines corresponding to each of the plurality of subjects, and obtaining a plurality of identification information from the plurality of subjects. The method further includes specifying locations of the plurality of subjects, determining directions of arrival of lights from the plurality of subjects, calculating distances between the terminal device and each of the plurality of subjects using each of the directions of the arrival of lights, and calculating a location of the terminal device using the locations of the plurality of the subjects and the distances.

Abstract: An information communication method selectively obtains a location of a terminal device. Determining the location of the terminal device by wireless communication with a wireless access point includes receiving a radio signal including a first identification information to identify a location of the wireless access point, and calculating the location of the terminal device using the identified location of the wireless access point, which is identified by the first identification information. Determining the location of the terminal device by visible light communication with a subject provides higher accuracy and includes setting an exposure time of an image sensor having a plurality to exposure lines so that a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject, obtaining a bright line image by capturing the subject, and demodulating data from the bright line image.

Abstract: An information communication method obtains information from a subject using a terminal device that includes an image sensor having a plurality of exposure lines. The method includes setting an exposure time of the image sensor so that a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, and obtaining identification information of the subject. In obtaining of the bright line image, an exposure time of each of the plurality of exposure lines partially overlaps with an exposure time of an adjacent one of the plurality of exposure lines. A pattern of a change in luminance of the subject is the same as a pattern of a change in luminance of another adjacent subject.

Abstract: A method includes obtaining a destination of a user of a terminal device, and setting an exposure time of an image sensor included in the terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a plurality of exposure lines appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time, and obtaining identification information of the subject, by demodulating data specified by a pattern of the plurality of bright lines. The method includes obtaining a position of the terminal device, and displaying an arrow that indicates a direction from the position of the terminal device toward the destination on a map on the terminal device.

Abstract: A method includes setting an exposure time of an image sensor included in a terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image, including a plurality of bright lines, by capturing the subject, obtaining identification information of the subject, and obtaining an angle of light of the subject. The method further includes calculating a distance between the terminal device and the subject using the angle, obtaining a position of the subject that is specified by the identification information, and calculating a position of the terminal device using the distance and the position of the subject.

Abstract: An evaluation device evaluates a placement position of an item placed on a shelf in a shop, and includes: an obtaining unit that obtains traffic line information indicating a plurality of persons passing in front of the shelf and purchased-item information indicating one or more purchased items, the one or more purchased items being purchased in the shop by the plurality of persons; and a controller that calculates a passing probability in front of the shelf, based on the traffic line information, calculates a purchase probability of the item placed on the shelf, based on the purchased-item information, and calculates an evaluation value, of the item placed on the shelf, at a placement position, based on the passing probability and the purchase probability calculated.

Abstract: A method is provided that includes obtaining a first image by image capture with a first exposure time, and obtaining a second image, including a plurality of bright lines, by capturing a subject changing in luminance with a second exposure. The method also includes obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained second image, and sending the information to a server. The method further includes obtaining augmented reality information related to the information from the server, and displaying the first image of the display a second time, instead of displaying the second image, when the image sensor receives the first image followed by the second image, wherein the augmented reality information is superposed in both (i) the first image that is displayed at a first time, and (ii) the first image that is displayed at a second time.

Abstract: A prediction device is a device that predicts a flow of a person after a layout change of goods in a region, and the prediction device includes: an obtaining unit that obtains traffic line information representing flows of a plurality of persons in the region, layout information representing layout positions of the goods, and change information representing a layout change of the goods; and a controller that generates an action model of a person in the region, by an inverse reinforcement learning method, based on the traffic line information and the layout information and that predicts a flow of a person after the layout change of the goods, based on the action model and the change information.

Abstract: A method includes setting an exposure time of an image sensor included in a terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image, including a plurality of bright lines, by capturing the subject, obtaining identification information of the subject, and obtaining an angle of light of the subject. The method further includes calculating a distance between the terminal device and the subject using the angle, obtaining a position of the subject that is specified by the identification information, and calculating a position of the terminal device using the distance and the position of the subject.

Abstract: A method includes obtaining a destination of a user of a terminal device, and setting an exposure time of an image sensor included in the terminal device so that, in an image obtained by capturing a subject by the image sensor, a bright line corresponding to each of a plurality of exposure lines appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time, and obtaining identification information of the subject, by demodulating data specified by a pattern of the plurality of bright lines. The method includes obtaining a position of the terminal device, and displaying an arrow that indicates a direction from the position of the terminal device toward the destination on a map on the terminal device.

Abstract: A method is provided that includes obtaining a first image by image capture with a first exposure time, and obtaining a second image, including a plurality of bright lines, by capturing a subject changing in luminance with a second exposure. The method also includes obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained second image, and sending the information to a server. The method further includes obtaining augmented reality information related to the information from the server, and displaying the first image of the display a second time, instead of displaying the second image, when the image sensor receives the first image followed by the second image, wherein the augmented reality information is superposed in both (i) the first image that is displayed at a first time, and (ii) the first image that is displayed at a second time.

Abstract: A monitoring device (2) identifies an object from videos made by a plurality of cameras (1) including a first camera and a second camera and having a predetermined positional relationship. The monitoring device has a receiving unit (21) configured to receive the videos from the plurality of cameras, a storage unit (22b, 22c) configured to store feature information indicating a feature of the object and camera placement information indicating placement positions of the cameras, and a controller (23) configured to identify the object from the videos based on the feature information. If an object has been identifiable from the video made by the first camera but has been unidentifiable from the video made by the second camera, the controller (23) specifies, based on the camera placement information, the object in the video made by the second camera.

Abstract: An information communication method is provided for obtaining information from a subject using a terminal device that includes an image sensor having a plurality of exposure lines. The method includes setting an exposure time of the image sensor so that, in an image obtained by capturing the subject by the image sensor, a bright line corresponding to each of the plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, obtaining identification information of the subject, and sending the identification information to a server. The method further includes obtaining menu information related to the identification information from the server, the menu information related to a restaurant where the subject is installed, and displaying the menu information on a display of the terminal device.

Abstract: A simulation device includes an acquisition unit that acquires people flow information indicating a flow of people moving in a facility such as a store, purchase data indicating at least one item that is a product or a service purchased in the facility, and price information indicating a price of the at least one item placed in the facility, a people flow model generator that generates a people flow model based on the people flow information, a purchase model generator that generates a purchase model based on the purchase data and the people flow information, and a simulation execution unit that calculates, based on the price information, the people flow model, and the purchase model, a predicted value of a purchase amount of the at least one item purchased by a person moving in the facility.

Abstract: An information presentation device includes an input unit that inputs a setting value for setting two periods to be compared, an acquisition unit that acquires information on a passage rate indicating a proportion of a number of people passing through each of a plurality of areas constituting an inside of a facility and sales information indicating a sales amount of an item in each of the areas, a difference calculator that calculates a difference in the passage rate between the two periods and a difference in the sales amount between the two periods, and a display unit that displays at least one of the difference in the passage rate and the difference in the sales amount.

Abstract: An information presentation device includes an acquisition unit that acquires purchase data indicating items purchased in a facility, position information indicating where each of items is placed in the facility, and a layout map representing an inside of the facility, and a controller that extracts a plurality of items purchased by a person from the purchase data based on a predetermined condition and generates sales information on the plurality of items thus extracted based on the purchase data, and a display unit that displays a first figure representing each of the plurality of items purchased by the person and a second figure representing a link between the plurality of items together with the layout map representing the inside of the facility based on the sales information and the position information.

Abstract: An apparatus is provided that includes a display, an image sensor having a plurality of exposure lines, a processor, and a memory storing a computer program, which when executed by the processor, causes the processor to perform operations. The operations include displaying a first assist image on the display, and executing a visible light communication mode. In the visible light communication mode, the operations include (i) setting a second exposure time of the image sensor so that, in an image obtained by capturing a subject by the image sensor, a plurality of bright lines corresponding to the plurality of exposure lines included in the image sensor appear according to a change in luminance of the subject, (ii) obtaining a bright line image including the plurality of bright lines, and (iii) obtaining information by demodulating data specified by a pattern of the plurality of bright lines.

Abstract: An apparatus is provided that includes a display, a processor, and a recording medium having a program that causes the processor to execute operations, including obtaining a first image by image capture with a first exposure time by starting exposure for a plurality of exposure lines in an image sensor. The operations also include obtaining a second image, including a plurality of bright lines, by capturing a subject changing in luminance by the image sensor with a second exposure time by starting exposure for the plurality of exposure lines in the image sensor. The operations further include obtaining information by demodulating data specified by a pattern of the plurality of bright lines included in the obtained second image, and displaying a first image on the display during a period of obtaining of the second image using the image sensor.

Abstract: A recoding medium storing a computer program, which, when executed by a processor, cause the processor to perform operations including: determining a pattern of a change in luminance, by modulating the signal to be transmitted; and transmitting the signal, by at least one light emitter changing in luminance according to the determined pattern of the change in luminance. The signal has a plurality of blocks, each block of the plurality of blocks includes (i) address information that indicates a position of a data segment in the signal and (ii) the data segment. In the transmitting, the signal is transmitted repeatedly at different times. The address information is used to identify a same location of the block data segment in the signal transmitted at a first time and in the signal transmitted at a second time, which is different from the first time. The signal has a check signal.

Abstract: A method includes setting an exposure time of an image sensor of a terminal of a customer so that, in an image obtained by capturing a subject, a bright line corresponding to each of a plurality of exposure lines included in the image sensor appears according to a change in luminance of the subject. The method also includes obtaining a bright line image including a plurality of bright lines, by capturing the subject that changes in luminance by the image sensor with the set exposure time, and obtaining identification information of the subject, by demodulating data specified by a pattern of the plurality of bright lines. The method further includes sending the identification information to a server, obtaining a menu listing a product of the store from the server, displaying the menu on a display of the terminal, and sending product information of the product selected by the customer.