Communication terminal, communication system, communication control method, and recording medium

A method of controlling sharing of an image, performed by a communication terminal, the method comprising:

• displaying an image being shared with a first communication terminal and a second communication terminal, the image having a plurality of image layers superimposed one above another, and the plurality of image layers including a first image layer, a background image layer and a user interface layer, the background image layer for displaying a background image behind the first image layer and the user interface layer for displaying a user interface image above the first image layer;
• storing, by a circuitry of the communication terminal and in response to a user input for changing appearance of the first image layer of the image, information reflecting the change caused by the user input to the first image layer in a memory;
• storing the user interface image in the memory;
• retrieving, by the circuitry in response to a user request for replacing the background image with a different background image, the different background image;
• generating, by the circuitry based on the information and the different background image, an updated image having the user interface layer superimposed on the first image layer and the first image layer being superimposed on the different background image, the first image layer reflecting the change caused by the user input;
• transmitting, by a transmitter of the communication terminal, the information, the user interface image and the different background image to the first communication terminal to cause the first communication terminal to generate and display the updated image having the user interface layer superimposed on the first image layer and the user interface layer superimposed on the different background image;
• and
• transmitting, by the transmitter, the updated image, having the user interface layer superimposed on the first image layer and the user interface layer superimposed on the different background image, to the second communication terminal to cause the second communication terminal to store the updated image.

A non-transitory recording medium which, when executed by one or more processors in a communication terminal, cause the one or more processors to perform a method of controlling sharing of an image, the method comprising:

• displaying an image being shared with a first communication terminal and a second communication terminal, the image having a plurality of image layers superimposed one above another, and the plurality of image layers including a first image layer, a background image layer and a user interface layer, the background image layer for displaying a background image behind the first image layer and the user interface layer for displaying a user interface image above the first image layer;
• storing, in response to a user input for changing appearance of the first image layer of the image, information reflecting the change caused by the user input to the first image layer in a memory;
• storing the user interface image in the memory;
• retrieving, in response to a user request for replacing the background image with a different background image, the different background image;
• generating, based on the information and the different background image, an updated image having the user interface layer superimposed on the first image layer and the first image layer being superimposed on the different background image, the first image layer reflecting the change caused by the user input;
• transmitting the information, the user interface image and the different background image to the first communication terminal to cause the first communication terminal to generate and display the updated image having the user interface layer superimposed on the first image layer and the user interface layer superimposed on the different background image;
• and
• transmitting the updated image, having the user interface layer superimposed on the first image layer and the user interface layer superimposed on the different background image, to the second communication terminal to cause the second communication terminal to store the updated image.