Display method and display device

An apparatus comprising:

• an image sensor that obtains a first image and a second image by capturing a subject, the subject transmitting light identification information by change in luminance;
• a processor;
• and
• a memory storing thereon a computer program, which when executed by the processor, causes the processor to perform operations including:
• decoding the second image to obtain the light identification information;
• transmitting the light identification information to a server;
• a plurality of sets of (i) an augmented reality image, (ii) recognition information, and (iii) identification information being stored in the server, out of the plurality of sets, obtaining, from the server, the augmented reality image and the recognition information included in each of the sets including the identification information that corresponds to the light identification information;
• recognizing a target region using the recognition information;
• and
• displaying the first image with the augmented reality image superimposed on the target region, wherein:
• the recognition information includes:
• reference information for specifying a reference region in the first image;
• and
• target information indicating a relative position of the target region with respect to the reference region, and
• the recognizing of the target region includes:
• specifying the reference region from the first image by matching the reference information and the first image;
• and
• recognizing the target region in the first image at the relative position from the reference region using the target information.

A non-transitory recording medium storing thereon a computer program, which when executed by a processor, causes the processor to perform operations including:

• obtaining a first image and a second image by capturing a subject using an image sensor, the subject transmitting light identification information by change in luminance;
• decoding the second image to obtain light identification information;
• transmitting the light identification information to a server;
• a plurality of sets of (i) an augmented reality image, (ii) recognition information, and (iii) identification information being stored in the server, out of the plurality of sets, obtaining, from the server, the augmented reality image and the recognition information included in each of the sets including the identification information that corresponds to the light identification information;
• recognizing a target region using the recognition information;
• and
• displaying, on a display, the first image with the augmented reality image superimposed on the target region, wherein:
• the recognition information includes:
• reference information for specifying a reference region in the first image;
• and
• target information indicating a relative position of the target region with respect to the reference region, and
• the recognizing of the target region includes:
• specifying the reference region from the first image by matching the reference information and the first image;
• and
• recognizing the target region in the first image at the relative position from the reference region using the target information.