1. An endoscope apparatus, comprising: a scope for obtaining an endoscope image by imaging a subject; an edge extraction means for extracting an edge component of the endoscope image obtained by the scope; a complexity degree detection means for detecting a complexity degree of the edge component extracted by the edge extraction means; an imaged state determination means for determining whether the endoscope image is an image obtained through near view imaging or distant view imaging of the subject according to the complexity degree detected by the complexity degree detection means; and a condition changing means for changing an imaging condition according to the near view imaging or distant view imaging determined by the imaged state determination means.