Image processing apparatus and image processing system

An image processing system, comprising:

• a plurality of image sensors configured to transmit, in respectively different packets, additional data including region information corresponding to a region set with respect to a captured image for each region and region image data indicating an image for each row corresponding to the region;
• and
• an image processing apparatus, wherein
• the image processing apparatus includes:
• a communicating unit capable of communicating with each of the plurality of image sensors;
• and
• a processing unit configured to process, in association with each region, the region image data acquired from each of the plurality of image sensors based on the region information included in the additional data acquired from each of the plurality of image sensors, and
• the region information includes a part of or all of identification information of the region, information indicating a position of the region, and information indicating a size of the region.