There is provided an electronic conference system, including a display controller that arranges and displays a marker for specifying a display position on a display screen of a display apparatus which placed in a conference room, a unit that obtains information concerning the display position of each marker included in an image capturing range obtained by capturing an image of a portion of the display screen by a conference participant using an information terminal device and that specifies an image capturing region on the display screen based on the information concerning the display position of each marker that is obtained, and a unit that combines image data displayed on the display apparatus at the time of image capturing performed using the information terminal device having an image capturing function with display data, to be displayed in the image capturing region that is specified, to generate a screen image.