MEDICAL OBSERVATION SYSTEM, MEDICAL OBSERVATION APPARATUS, AND MEDICAL OBSERVATION METHOD

A three-dimensional information generation unit generates a three-dimensional map (D(X, Y, Z)) of a surgical field from a surgical field image (K(x, y)) captured by an imaging apparatus. A region-of-interest setting unit (setting unit) sets at least one region of interest in a surgical field image that is captured at a predetermined timing. A detection region estimation unit estimates a relative position corresponding to the region of interest in a surgical field image that is captured at a certain timing different from the predetermined timing, on the basis of the three-dimensional map information on the region of interest. A parameter control unit adjusts imaging parameters of the imaging apparatus and a light source apparatus on the basis of three-dimensional information and pixel values of a surgical field image corresponding to the relative position of the region of interest estimated by the estimation unit, captures a surgical field image.