control acquisition of captured image data by imaging;

encode a plurality of pieces of image data as one piece of image data for transmission, the plurality of pieces of image data being based on at least one piece of captured image data, wherein the plurality of pieces of image data includes at least one piece of Region of Interest (RoI) image data;

generate auxiliary data regarding the plurality of pieces of image data wherein, based on a determination that the plurality of pieces of image data includes the at least one piece of ROI image data, the auxiliary data includes a frame identifier, ROI identifiers, pieces of ROI positional data, and an identifier of the imaging device; and

control transmission of the image data and the generated auxiliary data to an external device.