Provided is an endoscopic shape ascertainment system in which an endoscope device generates a first three-dimensional image of an insertion section of an endoscope scope as seen from a first viewpoint on the basis of position information for the insertion section from a three-dimensional position measurement device, generates a second three-dimensional image of the insertion section as seen from a second viewpoint arranged at a position rotated by 90 degrees around a predetermined rotational axis from the first viewpoint, adjusts a trimming width for the first and the second three-dimensional images so as to match the width of the insertion section in the first and the second three-dimensional images, and adjusts the position of a boundary line B2.
