Communication management device, image communication system, communication management method, and recording medium

1. An image communication system, comprising:

a spherical image camera for capturing a three-dimensional spherical panoramic image to obtain captured image data;

a communication terminal to display a predetermined area image that is an image of a predetermined area of a captured image based on the captured image data; and

a communication management device including circuitry configured to:

receive captured image data of a captured image obtained by an image capturing device and time-series information representing a date and time associated with predetermined area information, the predetermined area information representing a predetermined area and is transmitted by a communication terminal that displays a predetermined area image of the predetermined area; and

transmit, to the communication terminal, converted predetermined area image data obtained through perspective projection conversion based on the received captured image data and the received time-series information,

wherein the converted predetermined area image data is a recorded file that reflects a viewing state of the communication terminal.

2. The system according to claim 1 , wherein:

the circuitry is configured to further receive image capturing device identification information for identifying the image capturing device and communication terminal identification information for identifying the communication terminal, and

transmit, to the communication terminal, the converted predetermined area image data obtained through perspective projection conversion based on the time-series information associated with the image capturing device identification information and the communication terminal identification information and based on the captured image data.

3. The system according to claim 1 , wherein:

the circuitry is configured to transmit, to the communication terminal, the converted predetermined area image data in response to reception of an acquisition request for the converted predetermined area image data from the communication terminal.

4. The system according to claim 2 , wherein:

the time-series information represents a date and time associated with the image capturing device identification information and the communication terminal identification information.

5. The system according to claim 1 , wherein the circuitry is further configured to:

convert, based on the time-series information, the captured image data into the converted predetermined area image data.

6. The system according to claim 5 , wherein:

the circuitry uses predetermined area information in latest time-series information of the time-series information to convert the captured image data into the converted predetermined area image data.

7. A communication management method, comprising:

receiving captured image data of a captured image obtained by a spherical image capturing device for capturing a three-dimensional spherical panoramic image and time-series information representing a date and time associated with predetermined area information, the predetermined area information representing a predetermined area and is transmitted by a communication terminal that displays a predetermined area image of the predetermined area; and

transmitting, to the communication terminal, converted predetermined area image data obtained through perspective projection conversion based on the received captured image data and the received time-series information,

wherein the converted predetermined area image data is a recorded file that reflects a viewing state of the communication terminal.

8. A non-transitory recording medium which, when executed by one or more processors, cause the processors to perform a communication management method comprising:

receiving captured image data of a captured image obtained by a spherical image capturing device for capturing a three-dimensional spherical panoramic image and time-series information representing a date and time associated with predetermined area information, the predetermined area information representing a predetermined area and is transmitted by a communication terminal that displays a predetermined area image of the predetermined area; and

transmitting, to the communication terminal, converted predetermined area image data obtained through perspective projection conversion based on the received captured image data and the received time-series information,

wherein the converted predetermined area image data is a recorded file that reflects a viewing state of the communication terminal.