MEDICAL OBSERVATION SYSTEM, CONTROL DEVICE, AND CONTROL METHOD

The present disclosure relates to a medical observation system, a control device, and a control method that enable avoidance of losing sight of an observation part.Generated is an enlarged field-of-view image with a change in field-of-view range from a wide-angle field-of-view image acquired by a capturing device that captures an observation part at a wide angle of view. Then, on the basis of the movement of the capturing device recognized, in a case where it is recognized that the movement of the capturing device has occurred, output is switched from the enlarged field-of-view image to the wide-angle field-of-view image, and thereafter, in a case where it is recognized that the movement of the capturing device has stopped, the output is switched from the wide-angle field-of-view image to the enlarged field-of-view image. The present technology is applicable to, for example, a medical observation system that captures a surgical site as an observation part.