Server device, mobile terminal, road junction guidance system, and road junction guidance method

A server device that can communicate with at least one mobile terminal comprising:

• a collection part configures to collect a photographic image and information related to the time of photography thereof, reported from a mobile terminal that receives a request for photography when passing through at least one predetermined road junction;
• a generation part configures to, on the basis of the results of collection by said collection part, generate standard image information photographed while passing through said predetermined road junction with a predetermined speed variation condition being satisfied;
• a storage part configures to store said standard image information;
• and
• a standard image reporting part configures to, upon receipt of an acquisition request for an image for a passage through one of said predetermined road junction, report image information corresponding, in said standard image information, to said acquisition request, to the mobile terminal that issued said acquisition request.

A road junction guidance method performed in cooperation by at least one mobile terminal and a server device that can communicate with said mobile terminal comprising the steps of:

• collecting a photographic image and information in which said server device collects a photographic image and information related to the time of photography thereof, reported from a mobile terminal that receives a request for photography when passing through at least one predetermined road junction;
• generating standard image information in which, on the basis of the results of collection by said collection process, said server device generates standard image information photographed while passing through said predetermined road junction with a predetermined speed variation condition being satisfied;
• reporting a standard image in which said server device, upon receipt of an acquisition request for an image for a passage through one of said predetermined road junction, reports an image corresponding, in said standard image information, to said acquisition request, to the mobile terminal that issued said acquisition request;
• and
• performing a display in which the mobile terminal that issued said acquisition request performs display on the basis of image information that corresponds to said acquisition request.