1. An endoscope system comprising: an imaging device that acquires a captured image that includes an object image; and a control device configured to set an attention area within the captured image, and perform a local scaling process that relatively enlarges the attention area as compared with another area while maintaining an angle of view of the captured image, wherein the captured image is an in vivo image, and wherein the control device is configured to acquire contact state information about a contact state between an end of a scope and tissue based on the captured image, set a contact area in the captured image corresponding to contact between the end of the scope and the tissue, and set an area other than the contact area to be the attention area.